// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Math} from "@openzeppelin/contracts/utils/math/Math.sol";
import {SafeCast} from "@openzeppelin/contracts/utils/math/SafeCast.sol";
import {RewardManager} from "./RewardManager.sol";

/**
 * 4AD - D = 4A(x + y) - (D³ / 4xy)
 * X - is value of real stable token
 * Y - is value of virtual usd
 */
contract Pool is RewardManager {
    using SafeERC20 for ERC20;
    uint private constant SYSTEM_PRECISION = 3;
    int private constant PP = 1e4; // Price Precision
    uint private constant MAX_TOKEN_BALANCE = 2 ** 40; // Max possible token balance

    /**
     * @dev Gas optimization: both the 'feeShareBP' and 'router' fields are used during the 'swapFromVUsd', 'swapToVUsd'
     * operations and can occupy the same slot.
     */
    uint16 public feeShareBP;
    address public router;
    uint public tokenBalance;
    uint public vUsdBalance;
    uint public balanceRatioMinBP;
    uint public reserves;
    uint public immutable a;
    uint public d;

    uint private immutable tokenAmountReduce;
    uint private immutable tokenAmountIncrease;

    // can restrict deposit or withdraw operations
    address private stopAuthority;
    // is deposit operation allowed
    uint public canDeposit = 1;
    // is withdraw operation allowed
    uint public canWithdraw = 1;

    event SwappedToVUsd(address sender, address token, uint amount, uint vUsdAmount, uint fee);
    event SwappedFromVUsd(address recipient, address token, uint vUsdAmount, uint amount, uint fee);

    constructor(
        address router_,
        uint a_,
        ERC20 token_,
        uint16 feeShareBP_,
        uint balanceRatioMinBP_,
        string memory lpName,
        string memory lpSymbol
    ) RewardManager(token_, lpName, lpSymbol) {
        a = a_;
        router = router_;
        stopAuthority = owner();
        feeShareBP = feeShareBP_;
        balanceRatioMinBP = balanceRatioMinBP_;

        uint decimals = token_.decimals();
        tokenAmountReduce = decimals > SYSTEM_PRECISION ? 10 ** (decimals - SYSTEM_PRECISION) : 0;
        tokenAmountIncrease = decimals < SYSTEM_PRECISION ? 10 ** (SYSTEM_PRECISION - decimals) : 0;
    }

    /**
     * @dev Throws if called by any account other than the router.
     */
    modifier onlyRouter() {
        require(router == msg.sender, "Pool: is not router");
        _;
    }

    /**
     * @dev Throws if called by any account other than the stopAuthority.
     */
    modifier onlyStopAuthority() {
        require(stopAuthority == msg.sender, "Pool: is not stopAuthority");
        _;
    }

    /**
     * @dev Modifier to prevent function from disbalancing the pool over a threshold defined by `balanceRatioMinBP`
     */
    modifier validateBalanceRatio() {
        _;
        if (tokenBalance > vUsdBalance) {
            require((vUsdBalance * BP) / tokenBalance >= balanceRatioMinBP, "Pool: low vUSD balance");
        } else if (tokenBalance < vUsdBalance) {
            require((tokenBalance * BP) / vUsdBalance >= balanceRatioMinBP, "Pool: low token balance");
        }
    }

    /**
     * @dev Modifier to make a function callable only when the deposit is allowed.
     */
    modifier whenCanDeposit() {
        require(canDeposit == 1, "Pool: deposit prohibited");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the withdraw is allowed.
     */
    modifier whenCanWithdraw() {
        require(canWithdraw == 1, "Pool: withdraw prohibited");
        _;
    }

    /**
     * @dev Calculates the price and deposit token according to the amount and price, then adds the same amount to the X
     * and to the Y
     * @param amount The deposited amount
     */
    function deposit(uint amount) external whenCanDeposit {
        uint oldD = d;

        uint amountSP = _toSystemPrecision(amount);
        require(amountSP > 0, "Pool: too little");

        token.safeTransferFrom(msg.sender, address(this), amount);

        // Add deposited amount to reserves
        reserves += amountSP;

        uint oldBalance = (tokenBalance + vUsdBalance);
        if (oldD == 0 || oldBalance == 0) {
            // Split balance equally on the first deposit
            uint halfAmount = amountSP >> 1;
            tokenBalance += halfAmount;
            vUsdBalance += halfAmount;
        } else {
            // Add amount proportionally to each pool
            tokenBalance += (amountSP * tokenBalance) / oldBalance;
            vUsdBalance += (amountSP * vUsdBalance) / oldBalance;
        }
        _updateD();
        // Deposit as many LP tokens as the D increase
        _depositLp(msg.sender, d - oldD);

        require(tokenBalance < MAX_TOKEN_BALANCE, "Pool: too much");
    }

    /*
     * @dev Subtracts X and Y for that amount, calculates current price and withdraw the token to the user according to
     * the price
     * @param amount The deposited amount
     */
    function withdraw(uint amountLp) external whenCanWithdraw {
        uint oldD = d;
        _withdrawLp(msg.sender, amountLp);

        // Always withdraw tokens in amount equal to amountLp

        // Withdraw proportionally from token and vUsd balance
        uint oldBalance = (tokenBalance + vUsdBalance);
        tokenBalance -= (amountLp * tokenBalance) / oldBalance;
        vUsdBalance -= (amountLp * vUsdBalance) / oldBalance;

        require(tokenBalance + vUsdBalance < oldBalance, "Pool: zero changes");

        // Check if there is enough funds in reserve to withdraw
        require(amountLp <= reserves, "Pool: reserves");

        // Adjust reserves by withdraw amount
        reserves -= amountLp;

        // Update D and transfer tokens to the sender
        _updateD();
        require(d < oldD, "Pool: zero D changes");

        token.safeTransfer(msg.sender, _fromSystemPrecision(amountLp));
    }

    /**
     * @notice Calculates new virtual USD value from the given amount of tokens.
     * @dev Calculates new Y according to new X.
     * NOTICE: Prior to calling this the router must transfer tokens from the user to the pool.
     * @param amount The amount of tokens to swap.
     * @param zeroFee When true it allows to swap without incurring any fees. It is intended for use with service
     * accounts.
     * @return returns the difference between the old and the new value of vUsdBalance
     */
    function swapToVUsd(
        address user,
        uint amount,
        bool zeroFee
    ) external onlyRouter validateBalanceRatio returns (uint) {
        uint result; // 0 by default
        uint fee;
        if (amount > 0) {
            if (!zeroFee) {
                fee = (amount * feeShareBP) / BP;
            }
            uint amountIn = _toSystemPrecision(amount - fee);
            // Incorporate rounding dust into the fee
            fee = amount - _fromSystemPrecision(amountIn);

            // Adjust token and reserve balances after the fee is applied
            tokenBalance += amountIn;
            reserves += amountIn;

            uint vUsdNewAmount = this.getY(tokenBalance);
            if (vUsdBalance > vUsdNewAmount) {
                result = vUsdBalance - vUsdNewAmount;
            }
            vUsdBalance = vUsdNewAmount;
            _addRewards(fee);
        }

        emit SwappedToVUsd(user, address(token), amount, result, fee);
        return result;
    }

    /**
     * @notice Calculates the amount of tokens from the given virtual USD value, and transfers it to the user.
     * @dev Calculates new X according to new Y.
     * @param user The address of the recipient.
     * @param amount The amount of vUSD to swap.
     * @param receiveAmountMin The minimum amount of tokens required to be received during the swap, otherwise the
     * transaction reverts.
     * @param zeroFee When true it allows to swap without incurring any fees. It is intended for use with service
     * accounts.
     * @return returns the difference between the old and the new value of vUsdBalance
     */
    function swapFromVUsd(
        address user,
        uint amount,
        uint receiveAmountMin,
        bool zeroFee
    ) external onlyRouter validateBalanceRatio returns (uint) {
        uint resultSP; // 0 by default
        uint result; // 0 by default
        uint fee;
        if (amount > 0) {
            vUsdBalance += amount;
            uint newAmount = this.getY(vUsdBalance);
            if (tokenBalance > newAmount) {
                resultSP = tokenBalance - newAmount;
                result = _fromSystemPrecision(resultSP);
            } // Otherwise result/resultSP stay 0

            // Check if there is enough funds in reserve to pay
            require(resultSP <= reserves, "Pool: reserves");
            // Remove from reserves including fee, apply fee later
            reserves -= resultSP;
            if (!zeroFee) {
                fee = (result * feeShareBP) / BP;
            }
            // We can use unchecked here because feeShareBP <= BP
            unchecked {
                result -= fee;
            }

            tokenBalance = newAmount;
            require(result >= receiveAmountMin, "Pool: slippage");
            token.safeTransfer(user, result);
            _addRewards(fee);
        }
        emit SwappedFromVUsd(user, address(token), amount, result, fee);
        return result;
    }

    /**
     * @dev Sets admin fee share.
     */
    function setFeeShare(uint16 feeShareBP_) external onlyOwner {
        require(feeShareBP_ <= BP, "Pool: too large");
        feeShareBP = feeShareBP_;
    }

    function adjustTotalLpAmount() external onlyOwner {
        if (d > totalSupply()) {
            _depositLp(owner(), d - totalSupply());
        }
    }

    /**
     * @dev Sets the threshold over which the pool can't be disbalanced.
     */
    function setBalanceRatioMinBP(uint balanceRatioMinBP_) external onlyOwner {
        require(balanceRatioMinBP_ <= BP, "Pool: too large");
        balanceRatioMinBP = balanceRatioMinBP_;
    }

    /**
     * @dev Switches off the possibility to make deposits.
     */
    function stopDeposit() external onlyStopAuthority {
        canDeposit = 0;
    }

    /**
     * @dev Switches on the possibility to make deposits.
     */
    function startDeposit() external onlyOwner {
        canDeposit = 1;
    }

    /**
     * @dev Switches off the possibility to make withdrawals.
     */
    function stopWithdraw() external onlyStopAuthority {
        canWithdraw = 0;
    }

    /**
     * @dev Switches on the possibility to make withdrawals.
     */
    function startWithdraw() external onlyOwner {
        canWithdraw = 1;
    }

    /**
     * @dev Sets the address of the stopAuthority account.
     */
    function setStopAuthority(address stopAuthority_) external onlyOwner {
        stopAuthority = stopAuthority_;
    }

    /**
     * @dev Sets the address of the Router contract.
     */
    function setRouter(address router_) external onlyOwner {
        router = router_;
    }

    /**
     * @dev y = (sqrt(x(4AD³ + x (4A(D - x) - D )²)) + x (4A(D - x) - D ))/8Ax.
     */
    function getY(uint x) external view returns (uint) {
        uint d_ = d; // Gas optimization
        uint a4 = a << 2;
        uint a8 = a4 << 1;
        // 4A(D - x) - D
        int part1 = int(a4) * (int(d_) - int(x)) - int(d_);
        // x * (4AD³ + x(part1²))
        uint part2 = x * (a4 * d_ * d_ * d_ + x * uint(part1 * part1));
        // (sqrt(part2) + x(part1)) / 8Ax)
        return SafeCast.toUint256(int(_sqrt(part2)) + int(x) * part1) / (a8 * x) + 1; // +1 to offset rounding errors
    }

    /**
     * @dev price = (1/2) * ((D³ + 8ADx² - 8Ax³ - 2Dx²) / (4x * sqrt(x(4AD³ + x (4A(D - x) - D )²))))
     */
    function getPrice() external view returns (uint) {
        uint x = tokenBalance;
        uint a8 = a << 3;
        uint dCubed = d * d * d;

        // 4A(D - x) - D
        int p1 = int(a << 2) * (int(d) - int(x)) - int(d);
        // x * 4AD³ + x(p1²)
        uint p2 = x * ((a << 2) * dCubed + x * uint(p1 * p1));
        // D³ + 8ADx² - 8Ax³ - 2Dx²
        int p3 = int(dCubed) + int((a << 3) * d * x * x) - int(a8 * x * x * x) - int((d << 1) * x * x);
        // 1/2 * p3 / (4x * sqrt(p2))
        return SafeCast.toUint256((PP >> 1) + ((PP * p3) / int((x << 2) * _sqrt(p2))));
    }

    function _updateD() internal {
        uint x = tokenBalance;
        uint y = vUsdBalance;
        // a = 8 * Axy(x+y)
        // b = 4 * xy(4A - 1) / 3
        // c = sqrt(a² + b³)
        // D = cbrt(a + c) + cbrt(a - c)
        uint xy = x * y;
        uint a_ = a;
        // Axy(x+y)
        uint p1 = a_ * xy * (x + y);
        // xy(4A - 1) / 3
        uint p2 = (xy * ((a_ << 2) - 1)) / 3;
        // p1² + p2³
        uint p3 = _sqrt((p1 * p1) + (p2 * p2 * p2));
        unchecked {
            uint d_ = _cbrt(p1 + p3);
            if (p3 > p1) {
                d_ -= _cbrt(p3 - p1);
            } else {
                d_ += _cbrt(p1 - p3);
            }
            d = (d_ << 1);
        }
    }

    function _toSystemPrecision(uint amount) internal view returns (uint) {
        if (tokenAmountReduce > 0) {
            return amount / tokenAmountReduce;
        } else if (tokenAmountIncrease > 0) {
            return amount * tokenAmountIncrease;
        }
        return amount;
    }

    function _fromSystemPrecision(uint amount) internal view returns (uint) {
        if (tokenAmountReduce > 0) {
            return amount * tokenAmountReduce;
        } else if (tokenAmountIncrease > 0) {
            return amount / tokenAmountIncrease;
        }
        return amount;
    }

    function _sqrt(uint n) internal pure returns (uint) {
        unchecked {
            if (n > 0) {
                uint x = (n >> 1) + 1;
                uint y = (x + n / x) >> 1;
                while (x > y) {
                    x = y;
                    y = (x + n / x) >> 1;
                }
                return x;
            }
            return 0;
        }
    }

    function _cbrt(uint n) internal pure returns (uint) {
        unchecked {
            uint x = 0;
            for (uint y = 1 << 255; y > 0; y >>= 3) {
                x <<= 1;
                uint z = 3 * x * (x + 1) + 1;
                if (n / y >= z) {
                    n -= y * z;
                    x += 1;
                }
            }
            return x;
        }
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        revert("Unsupported");
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

import "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/CalldataBytesLib.sol";

library ExecutorOptions {
    using CalldataBytesLib for bytes;

    uint8 internal constant WORKER_ID = 1;

    uint8 internal constant OPTION_TYPE_LZRECEIVE = 1;
    uint8 internal constant OPTION_TYPE_NATIVE_DROP = 2;
    uint8 internal constant OPTION_TYPE_LZCOMPOSE = 3;
    uint8 internal constant OPTION_TYPE_ORDERED_EXECUTION = 4;
    uint8 internal constant OPTION_TYPE_LZREAD = 5;

    error Executor_InvalidLzReceiveOption();
    error Executor_InvalidNativeDropOption();
    error Executor_InvalidLzComposeOption();
    error Executor_InvalidLzReadOption();

    /// @dev decode the next executor option from the options starting from the specified cursor
    /// @param _options [executor_id][executor_option][executor_id][executor_option]...
    ///        executor_option = [option_size][option_type][option]
    ///        option_size = len(option_type) + len(option)
    ///        executor_id: uint8, option_size: uint16, option_type: uint8, option: bytes
    /// @param _cursor the cursor to start decoding from
    /// @return optionType the type of the option
    /// @return option the option of the executor
    /// @return cursor the cursor to start decoding the next executor option
    function nextExecutorOption(
        bytes calldata _options,
        uint256 _cursor
    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {
        unchecked {
            // skip worker id
            cursor = _cursor + 1;

            // read option size
            uint16 size = _options.toU16(cursor);
            cursor += 2;

            // read option type
            optionType = _options.toU8(cursor);

            // startCursor and endCursor are used to slice the option from _options
            uint256 startCursor = cursor + 1; // skip option type
            uint256 endCursor = cursor + size;
            option = _options[startCursor:endCursor];
            cursor += size;
        }
    }

    function decodeLzReceiveOption(bytes calldata _option) internal pure returns (uint128 gas, uint128 value) {
        if (_option.length != 16 && _option.length != 32) revert Executor_InvalidLzReceiveOption();
        gas = _option.toU128(0);
        value = _option.length == 32 ? _option.toU128(16) : 0;
    }

    function decodeNativeDropOption(bytes calldata _option) internal pure returns (uint128 amount, bytes32 receiver) {
        if (_option.length != 48) revert Executor_InvalidNativeDropOption();
        amount = _option.toU128(0);
        receiver = _option.toB32(16);
    }

    function decodeLzComposeOption(
        bytes calldata _option
    ) internal pure returns (uint16 index, uint128 gas, uint128 value) {
        if (_option.length != 18 && _option.length != 34) revert Executor_InvalidLzComposeOption();
        index = _option.toU16(0);
        gas = _option.toU128(2);
        value = _option.length == 34 ? _option.toU128(18) : 0;
    }

    function decodeLzReadOption(
        bytes calldata _option
    ) internal pure returns (uint128 gas, uint32 calldataSize, uint128 value) {
        if (_option.length != 20 && _option.length != 36) revert Executor_InvalidLzReadOption();
        gas = _option.toU128(0);
        calldataSize = _option.toU32(16);
        value = _option.length == 36 ? _option.toU128(20) : 0;
    }

    function encodeLzReceiveOption(uint128 _gas, uint128 _value) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_gas) : abi.encodePacked(_gas, _value);
    }

    function encodeNativeDropOption(uint128 _amount, bytes32 _receiver) internal pure returns (bytes memory) {
        return abi.encodePacked(_amount, _receiver);
    }

    function encodeLzComposeOption(uint16 _index, uint128 _gas, uint128 _value) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_index, _gas) : abi.encodePacked(_index, _gas, _value);
    }

    function encodeLzReadOption(
        uint128 _gas,
        uint32 _calldataSize,
        uint128 _value
    ) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_gas, _calldataSize) : abi.encodePacked(_gas, _calldataSize, _value);
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

import { BytesLib } from "solidity-bytes-utils/contracts/BytesLib.sol";

import { BitMap256 } from "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/BitMaps.sol";
import { CalldataBytesLib } from "@layerzerolabs/lz-evm-protocol-v2/contracts/libs/CalldataBytesLib.sol";

library DVNOptions {
    using CalldataBytesLib for bytes;
    using BytesLib for bytes;

    uint8 internal constant WORKER_ID = 2;
    uint8 internal constant OPTION_TYPE_PRECRIME = 1;

    error DVN_InvalidDVNIdx();
    error DVN_InvalidDVNOptions(uint256 cursor);

    /// @dev group dvn options by its idx
    /// @param _options [dvn_id][dvn_option][dvn_id][dvn_option]...
    ///        dvn_option = [option_size][dvn_idx][option_type][option]
    ///        option_size = len(dvn_idx) + len(option_type) + len(option)
    ///        dvn_id: uint8, dvn_idx: uint8, option_size: uint16, option_type: uint8, option: bytes
    /// @return dvnOptions the grouped options, still share the same format of _options
    /// @return dvnIndices the dvn indices
    function groupDVNOptionsByIdx(
        bytes memory _options
    ) internal pure returns (bytes[] memory dvnOptions, uint8[] memory dvnIndices) {
        if (_options.length == 0) return (dvnOptions, dvnIndices);

        uint8 numDVNs = getNumDVNs(_options);

        // if there is only 1 dvn, we can just return the whole options
        if (numDVNs == 1) {
            dvnOptions = new bytes[](1);
            dvnOptions[0] = _options;

            dvnIndices = new uint8[](1);
            dvnIndices[0] = _options.toUint8(3); // dvn idx
            return (dvnOptions, dvnIndices);
        }

        // otherwise, we need to group the options by dvn_idx
        dvnIndices = new uint8[](numDVNs);
        dvnOptions = new bytes[](numDVNs);
        unchecked {
            uint256 cursor = 0;
            uint256 start = 0;
            uint8 lastDVNIdx = 255; // 255 is an invalid dvn_idx

            while (cursor < _options.length) {
                ++cursor; // skip worker_id

                // optionLength asserted in getNumDVNs (skip check)
                uint16 optionLength = _options.toUint16(cursor);
                cursor += 2;

                // dvnIdx asserted in getNumDVNs (skip check)
                uint8 dvnIdx = _options.toUint8(cursor);

                // dvnIdx must equal to the lastDVNIdx for the first option
                // so it is always skipped in the first option
                // this operation slices out options whenever the scan finds a different lastDVNIdx
                if (lastDVNIdx == 255) {
                    lastDVNIdx = dvnIdx;
                } else if (dvnIdx != lastDVNIdx) {
                    uint256 len = cursor - start - 3; // 3 is for worker_id and option_length
                    bytes memory opt = _options.slice(start, len);
                    _insertDVNOptions(dvnOptions, dvnIndices, lastDVNIdx, opt);

                    // reset the start and lastDVNIdx
                    start += len;
                    lastDVNIdx = dvnIdx;
                }

                cursor += optionLength;
            }

            // skip check the cursor here because the cursor is asserted in getNumDVNs
            // if we have reached the end of the options, we need to process the last dvn
            uint256 size = cursor - start;
            bytes memory op = _options.slice(start, size);
            _insertDVNOptions(dvnOptions, dvnIndices, lastDVNIdx, op);

            // revert dvnIndices to start from 0
            for (uint8 i = 0; i < numDVNs; ++i) {
                --dvnIndices[i];
            }
        }
    }

    function _insertDVNOptions(
        bytes[] memory _dvnOptions,
        uint8[] memory _dvnIndices,
        uint8 _dvnIdx,
        bytes memory _newOptions
    ) internal pure {
        // dvnIdx starts from 0 but default value of dvnIndices is 0,
        // so we tell if the slot is empty by adding 1 to dvnIdx
        if (_dvnIdx == 255) revert DVN_InvalidDVNIdx();
        uint8 dvnIdxAdj = _dvnIdx + 1;

        for (uint256 j = 0; j < _dvnIndices.length; ++j) {
            uint8 index = _dvnIndices[j];
            if (dvnIdxAdj == index) {
                _dvnOptions[j] = abi.encodePacked(_dvnOptions[j], _newOptions);
                break;
            } else if (index == 0) {
                // empty slot, that means it is the first time we see this dvn
                _dvnIndices[j] = dvnIdxAdj;
                _dvnOptions[j] = _newOptions;
                break;
            }
        }
    }

    /// @dev get the number of unique dvns
    /// @param _options the format is the same as groupDVNOptionsByIdx
    function getNumDVNs(bytes memory _options) internal pure returns (uint8 numDVNs) {
        uint256 cursor = 0;
        BitMap256 bitmap;

        // find number of unique dvn_idx
        unchecked {
            while (cursor < _options.length) {
                ++cursor; // skip worker_id

                uint16 optionLength = _options.toUint16(cursor);
                cursor += 2;
                if (optionLength < 2) revert DVN_InvalidDVNOptions(cursor); // at least 1 byte for dvn_idx and 1 byte for option_type

                uint8 dvnIdx = _options.toUint8(cursor);

                // if dvnIdx is not set, increment numDVNs
                // max num of dvns is 255, 255 is an invalid dvn_idx
                // The order of the dvnIdx is not required to be sequential, as enforcing the order may weaken
                // the composability of the options. e.g. if we refrain from enforcing the order, an OApp that has
                // already enforced certain options can append additional options to the end of the enforced
                // ones without restrictions.
                if (dvnIdx == 255) revert DVN_InvalidDVNIdx();
                if (!bitmap.get(dvnIdx)) {
                    ++numDVNs;
                    bitmap = bitmap.set(dvnIdx);
                }

                cursor += optionLength;
            }
        }
        if (cursor != _options.length) revert DVN_InvalidDVNOptions(cursor);
    }

    /// @dev decode the next dvn option from _options starting from the specified cursor
    /// @param _options the format is the same as groupDVNOptionsByIdx
    /// @param _cursor the cursor to start decoding
    /// @return optionType the type of the option
    /// @return option the option
    /// @return cursor the cursor to start decoding the next option
    function nextDVNOption(
        bytes calldata _options,
        uint256 _cursor
    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {
        unchecked {
            // skip worker id
            cursor = _cursor + 1;

            // read option size
            uint16 size = _options.toU16(cursor);
            cursor += 2;

            // read option type
            optionType = _options.toU8(cursor + 1); // skip dvn_idx

            // startCursor and endCursor are used to slice the option from _options
            uint256 startCursor = cursor + 2; // skip option type and dvn_idx
            uint256 endCursor = cursor + size;
            option = _options[startCursor:endCursor];
            cursor += size;
        }
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol";

import { ExecutorOptions } from "@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/ExecutorOptions.sol";

import { DVNOptions } from "./DVNOptions.sol";

library UlnOptions {
    using SafeCast for uint256;

    uint16 internal constant TYPE_1 = 1; // legacy options type 1
    uint16 internal constant TYPE_2 = 2; // legacy options type 2
    uint16 internal constant TYPE_3 = 3;

    error LZ_ULN_InvalidWorkerOptions(uint256 cursor);
    error LZ_ULN_InvalidWorkerId(uint8 workerId);
    error LZ_ULN_InvalidLegacyType1Option();
    error LZ_ULN_InvalidLegacyType2Option();
    error LZ_ULN_UnsupportedOptionType(uint16 optionType);

    /// @dev decode the options into executorOptions and dvnOptions
    /// @param _options the options can be either legacy options (type 1 or 2) or type 3 options
    /// @return executorOptions the executor options, share the same format of type 3 options
    /// @return dvnOptions the dvn options, share the same format of type 3 options
    function decode(
        bytes calldata _options
    ) internal pure returns (bytes memory executorOptions, bytes memory dvnOptions) {
        // at least 2 bytes for the option type, but can have no options
        if (_options.length < 2) revert LZ_ULN_InvalidWorkerOptions(0);

        uint16 optionsType = uint16(bytes2(_options[0:2]));
        uint256 cursor = 2;

        // type3 options: [worker_option][worker_option]...
        // worker_option: [worker_id][option_size][option]
        // worker_id: uint8, option_size: uint16, option: bytes
        if (optionsType == TYPE_3) {
            unchecked {
                uint256 start = cursor;
                uint8 lastWorkerId; // worker_id starts from 1, so 0 is an invalid worker_id

                // heuristic: we assume that the options are mostly EXECUTOR options only
                // checking the workerID can reduce gas usage for most cases
                while (cursor < _options.length) {
                    uint8 workerId = uint8(bytes1(_options[cursor:cursor + 1]));
                    if (workerId == 0) revert LZ_ULN_InvalidWorkerId(0);

                    // workerId must equal to the lastWorkerId for the first option
                    // so it is always skipped in the first option
                    // this operation slices out options whenever the the scan finds a different workerId
                    if (lastWorkerId == 0) {
                        lastWorkerId = workerId;
                    } else if (workerId != lastWorkerId) {
                        bytes calldata op = _options[start:cursor]; // slice out the last worker's options
                        (executorOptions, dvnOptions) = _insertWorkerOptions(
                            executorOptions,
                            dvnOptions,
                            lastWorkerId,
                            op
                        );

                        // reset the start cursor and lastWorkerId
                        start = cursor;
                        lastWorkerId = workerId;
                    }

                    ++cursor; // for workerId

                    uint16 size = uint16(bytes2(_options[cursor:cursor + 2]));
                    if (size == 0) revert LZ_ULN_InvalidWorkerOptions(cursor);
                    cursor += size + 2;
                }

                // the options length must be the same as the cursor at the end
                if (cursor != _options.length) revert LZ_ULN_InvalidWorkerOptions(cursor);

                // if we have reached the end of the options and the options are not empty
                // we need to process the last worker's options
                if (_options.length > 2) {
                    bytes calldata op = _options[start:cursor];
                    (executorOptions, dvnOptions) = _insertWorkerOptions(executorOptions, dvnOptions, lastWorkerId, op);
                }
            }
        } else {
            executorOptions = decodeLegacyOptions(optionsType, _options);
        }
    }

    function _insertWorkerOptions(
        bytes memory _executorOptions,
        bytes memory _dvnOptions,
        uint8 _workerId,
        bytes calldata _newOptions
    ) private pure returns (bytes memory, bytes memory) {
        if (_workerId == ExecutorOptions.WORKER_ID) {
            _executorOptions = _executorOptions.length == 0
                ? _newOptions
                : abi.encodePacked(_executorOptions, _newOptions);
        } else if (_workerId == DVNOptions.WORKER_ID) {
            _dvnOptions = _dvnOptions.length == 0 ? _newOptions : abi.encodePacked(_dvnOptions, _newOptions);
        } else {
            revert LZ_ULN_InvalidWorkerId(_workerId);
        }
        return (_executorOptions, _dvnOptions);
    }

    /// @dev decode the legacy options (type 1 or 2) into executorOptions
    /// @param _optionType the legacy option type
    /// @param _options the legacy options, which still has the option type in the first 2 bytes
    /// @return executorOptions the executor options, share the same format of type 3 options
    /// Data format:
    /// legacy type 1: [extraGas]
    /// legacy type 2: [extraGas][dstNativeAmt][dstNativeAddress]
    /// extraGas: uint256, dstNativeAmt: uint256, dstNativeAddress: bytes
    function decodeLegacyOptions(
        uint16 _optionType,
        bytes calldata _options
    ) internal pure returns (bytes memory executorOptions) {
        if (_optionType == TYPE_1) {
            if (_options.length != 34) revert LZ_ULN_InvalidLegacyType1Option();

            // execution gas
            uint128 executionGas = uint256(bytes32(_options[2:2 + 32])).toUint128();

            // dont use the encode function in the ExecutorOptions lib for saving gas by calling abi.encodePacked once
            // the result is a lzReceive option: [executor_id][option_size][option_type][execution_gas]
            // option_type: uint8, execution_gas: uint128
            // option_size = len(option_type) + len(execution_gas) = 1 + 16 = 17
            executorOptions = abi.encodePacked(
                ExecutorOptions.WORKER_ID,
                uint16(17), // 16 + 1, 16 for option_length, + 1 for option_type
                ExecutorOptions.OPTION_TYPE_LZRECEIVE,
                executionGas
            );
        } else if (_optionType == TYPE_2) {
            // receiver size <= 32
            if (_options.length <= 66 || _options.length > 98) revert LZ_ULN_InvalidLegacyType2Option();

            // execution gas
            uint128 executionGas = uint256(bytes32(_options[2:2 + 32])).toUint128();

            // nativeDrop (amount + receiver)
            uint128 amount = uint256(bytes32(_options[34:34 + 32])).toUint128(); // offset 2 + 32
            bytes32 receiver;
            unchecked {
                uint256 receiverLen = _options.length - 66; // offset 2 + 32 + 32
                receiver = bytes32(_options[66:]);
                receiver = receiver >> (8 * (32 - receiverLen)); // padding 0 to the left
            }

            // dont use the encode function in the ExecutorOptions lib for saving gas by calling abi.encodePacked once
            // the result has one lzReceive option and one nativeDrop option:
            //      [executor_id][lzReceive_option_size][option_type][execution_gas] +
            //      [executor_id][nativeDrop_option_size][option_type][nativeDrop_amount][receiver]
            // option_type: uint8, execution_gas: uint128, nativeDrop_amount: uint128, receiver: bytes32
            // lzReceive_option_size = len(option_type) + len(execution_gas) = 1 + 16 = 17
            // nativeDrop_option_size = len(option_type) + len(nativeDrop_amount) + len(receiver) = 1 + 16 + 32 = 49
            executorOptions = abi.encodePacked(
                ExecutorOptions.WORKER_ID,
                uint16(17), // 16 + 1, 16 for option_length, + 1 for option_type
                ExecutorOptions.OPTION_TYPE_LZRECEIVE,
                executionGas,
                ExecutorOptions.WORKER_ID,
                uint16(49), // 48 + 1, 32 + 16 for option_length, + 1 for option_type
                ExecutorOptions.OPTION_TYPE_NATIVE_DROP,
                amount,
                receiver
            );
        } else {
            revert LZ_ULN_UnsupportedOptionType(_optionType);
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

import { IMessageLibManager } from "./IMessageLibManager.sol";
import { IMessagingComposer } from "./IMessagingComposer.sol";
import { IMessagingChannel } from "./IMessagingChannel.sol";
import { IMessagingContext } from "./IMessagingContext.sol";

struct MessagingParams {
    uint32 dstEid;
    bytes32 receiver;
    bytes message;
    bytes options;
    bool payInLzToken;
}

struct MessagingReceipt {
    bytes32 guid;
    uint64 nonce;
    MessagingFee fee;
}

struct MessagingFee {
    uint256 nativeFee;
    uint256 lzTokenFee;
}

struct Origin {
    uint32 srcEid;
    bytes32 sender;
    uint64 nonce;
}

interface ILayerZeroEndpointV2 is IMessageLibManager, IMessagingComposer, IMessagingChannel, IMessagingContext {
    event PacketSent(bytes encodedPayload, bytes options, address sendLibrary);

    event PacketVerified(Origin origin, address receiver, bytes32 payloadHash);

    event PacketDelivered(Origin origin, address receiver);

    event LzReceiveAlert(
        address indexed receiver,
        address indexed executor,
        Origin origin,
        bytes32 guid,
        uint256 gas,
        uint256 value,
        bytes message,
        bytes extraData,
        bytes reason
    );

    event LzTokenSet(address token);

    event DelegateSet(address sender, address delegate);

    function quote(MessagingParams calldata _params, address _sender) external view returns (MessagingFee memory);

    function send(
        MessagingParams calldata _params,
        address _refundAddress
    ) external payable returns (MessagingReceipt memory);

    function verify(Origin calldata _origin, address _receiver, bytes32 _payloadHash) external;

    function verifiable(Origin calldata _origin, address _receiver) external view returns (bool);

    function initializable(Origin calldata _origin, address _receiver) external view returns (bool);

    function lzReceive(
        Origin calldata _origin,
        address _receiver,
        bytes32 _guid,
        bytes calldata _message,
        bytes calldata _extraData
    ) external payable;

    // oapp can burn messages partially by calling this function with its own business logic if messages are verified in order
    function clear(address _oapp, Origin calldata _origin, bytes32 _guid, bytes calldata _message) external;

    function setLzToken(address _lzToken) external;

    function lzToken() external view returns (address);

    function nativeToken() external view returns (address);

    function setDelegate(address _delegate) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

struct SetConfigParam {
    uint32 eid;
    uint32 configType;
    bytes config;
}

interface IMessageLibManager {
    struct Timeout {
        address lib;
        uint256 expiry;
    }

    event LibraryRegistered(address newLib);
    event DefaultSendLibrarySet(uint32 eid, address newLib);
    event DefaultReceiveLibrarySet(uint32 eid, address newLib);
    event DefaultReceiveLibraryTimeoutSet(uint32 eid, address oldLib, uint256 expiry);
    event SendLibrarySet(address sender, uint32 eid, address newLib);
    event ReceiveLibrarySet(address receiver, uint32 eid, address newLib);
    event ReceiveLibraryTimeoutSet(address receiver, uint32 eid, address oldLib, uint256 timeout);

    function registerLibrary(address _lib) external;

    function isRegisteredLibrary(address _lib) external view returns (bool);

    function getRegisteredLibraries() external view returns (address[] memory);

    function setDefaultSendLibrary(uint32 _eid, address _newLib) external;

    function defaultSendLibrary(uint32 _eid) external view returns (address);

    function setDefaultReceiveLibrary(uint32 _eid, address _newLib, uint256 _gracePeriod) external;

    function defaultReceiveLibrary(uint32 _eid) external view returns (address);

    function setDefaultReceiveLibraryTimeout(uint32 _eid, address _lib, uint256 _expiry) external;

    function defaultReceiveLibraryTimeout(uint32 _eid) external view returns (address lib, uint256 expiry);

    function isSupportedEid(uint32 _eid) external view returns (bool);

    function isValidReceiveLibrary(address _receiver, uint32 _eid, address _lib) external view returns (bool);

    /// ------------------- OApp interfaces -------------------
    function setSendLibrary(address _oapp, uint32 _eid, address _newLib) external;

    function getSendLibrary(address _sender, uint32 _eid) external view returns (address lib);

    function isDefaultSendLibrary(address _sender, uint32 _eid) external view returns (bool);

    function setReceiveLibrary(address _oapp, uint32 _eid, address _newLib, uint256 _gracePeriod) external;

    function getReceiveLibrary(address _receiver, uint32 _eid) external view returns (address lib, bool isDefault);

    function setReceiveLibraryTimeout(address _oapp, uint32 _eid, address _lib, uint256 _expiry) external;

    function receiveLibraryTimeout(address _receiver, uint32 _eid) external view returns (address lib, uint256 expiry);

    function setConfig(address _oapp, address _lib, SetConfigParam[] calldata _params) external;

    function getConfig(
        address _oapp,
        address _lib,
        uint32 _eid,
        uint32 _configType
    ) external view returns (bytes memory config);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

interface IMessagingChannel {
    event InboundNonceSkipped(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce);
    event PacketNilified(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);
    event PacketBurnt(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);

    function eid() external view returns (uint32);

    // this is an emergency function if a message cannot be verified for some reasons
    // required to provide _nextNonce to avoid race condition
    function skip(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce) external;

    function nilify(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;

    function burn(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;

    function nextGuid(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (bytes32);

    function inboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);

    function outboundNonce(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (uint64);

    function inboundPayloadHash(
        address _receiver,
        uint32 _srcEid,
        bytes32 _sender,
        uint64 _nonce
    ) external view returns (bytes32);

    function lazyInboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

interface IMessagingComposer {
    event ComposeSent(address from, address to, bytes32 guid, uint16 index, bytes message);
    event ComposeDelivered(address from, address to, bytes32 guid, uint16 index);
    event LzComposeAlert(
        address indexed from,
        address indexed to,
        address indexed executor,
        bytes32 guid,
        uint16 index,
        uint256 gas,
        uint256 value,
        bytes message,
        bytes extraData,
        bytes reason
    );

    function composeQueue(
        address _from,
        address _to,
        bytes32 _guid,
        uint16 _index
    ) external view returns (bytes32 messageHash);

    function sendCompose(address _to, bytes32 _guid, uint16 _index, bytes calldata _message) external;

    function lzCompose(
        address _from,
        address _to,
        bytes32 _guid,
        uint16 _index,
        bytes calldata _message,
        bytes calldata _extraData
    ) external payable;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.0;

interface IMessagingContext {
    function isSendingMessage() external view returns (bool);

    function getSendContext() external view returns (uint32 dstEid, address sender);
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

library CalldataBytesLib {
    function toU8(bytes calldata _bytes, uint256 _start) internal pure returns (uint8) {
        return uint8(_bytes[_start]);
    }

    function toU16(bytes calldata _bytes, uint256 _start) internal pure returns (uint16) {
        unchecked {
            uint256 end = _start + 2;
            return uint16(bytes2(_bytes[_start:end]));
        }
    }

    function toU32(bytes calldata _bytes, uint256 _start) internal pure returns (uint32) {
        unchecked {
            uint256 end = _start + 4;
            return uint32(bytes4(_bytes[_start:end]));
        }
    }

    function toU64(bytes calldata _bytes, uint256 _start) internal pure returns (uint64) {
        unchecked {
            uint256 end = _start + 8;
            return uint64(bytes8(_bytes[_start:end]));
        }
    }

    function toU128(bytes calldata _bytes, uint256 _start) internal pure returns (uint128) {
        unchecked {
            uint256 end = _start + 16;
            return uint128(bytes16(_bytes[_start:end]));
        }
    }

    function toU256(bytes calldata _bytes, uint256 _start) internal pure returns (uint256) {
        unchecked {
            uint256 end = _start + 32;
            return uint256(bytes32(_bytes[_start:end]));
        }
    }

    function toAddr(bytes calldata _bytes, uint256 _start) internal pure returns (address) {
        unchecked {
            uint256 end = _start + 20;
            return address(bytes20(_bytes[_start:end]));
        }
    }

    function toB32(bytes calldata _bytes, uint256 _start) internal pure returns (bytes32) {
        unchecked {
            uint256 end = _start + 32;
            return bytes32(_bytes[_start:end]);
        }
    }
}

// SPDX-License-Identifier: MIT

// modified from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/structs/BitMaps.sol
pragma solidity ^0.8.20;

type BitMap256 is uint256;

using BitMaps for BitMap256 global;

library BitMaps {
    /**
     * @dev Returns whether the bit at `index` is set.
     */
    function get(BitMap256 bitmap, uint8 index) internal pure returns (bool) {
        uint256 mask = 1 << index;
        return BitMap256.unwrap(bitmap) & mask != 0;
    }

    /**
     * @dev Sets the bit at `index`.
     */
    function set(BitMap256 bitmap, uint8 index) internal pure returns (BitMap256) {
        uint256 mask = 1 << index;
        return BitMap256.wrap(BitMap256.unwrap(bitmap) | mask);
    }
}

// SPDX-License-Identifier: LZBL-1.2

pragma solidity ^0.8.20;

import { CalldataBytesLib } from "../../libs/CalldataBytesLib.sol";

library ExecutorOptions {
    using CalldataBytesLib for bytes;

    uint8 internal constant WORKER_ID = 1;

    uint8 internal constant OPTION_TYPE_LZRECEIVE = 1;
    uint8 internal constant OPTION_TYPE_NATIVE_DROP = 2;
    uint8 internal constant OPTION_TYPE_LZCOMPOSE = 3;
    uint8 internal constant OPTION_TYPE_ORDERED_EXECUTION = 4;

    error Executor_InvalidLzReceiveOption();
    error Executor_InvalidNativeDropOption();
    error Executor_InvalidLzComposeOption();

    /// @dev decode the next executor option from the options starting from the specified cursor
    /// @param _options [executor_id][executor_option][executor_id][executor_option]...
    ///        executor_option = [option_size][option_type][option]
    ///        option_size = len(option_type) + len(option)
    ///        executor_id: uint8, option_size: uint16, option_type: uint8, option: bytes
    /// @param _cursor the cursor to start decoding from
    /// @return optionType the type of the option
    /// @return option the option of the executor
    /// @return cursor the cursor to start decoding the next executor option
    function nextExecutorOption(
        bytes calldata _options,
        uint256 _cursor
    ) internal pure returns (uint8 optionType, bytes calldata option, uint256 cursor) {
        unchecked {
            // skip worker id
            cursor = _cursor + 1;

            // read option size
            uint16 size = _options.toU16(cursor);
            cursor += 2;

            // read option type
            optionType = _options.toU8(cursor);

            // startCursor and endCursor are used to slice the option from _options
            uint256 startCursor = cursor + 1; // skip option type
            uint256 endCursor = cursor + size;
            option = _options[startCursor:endCursor];
            cursor += size;
        }
    }

    function decodeLzReceiveOption(bytes calldata _option) internal pure returns (uint128 gas, uint128 value) {
        if (_option.length != 16 && _option.length != 32) revert Executor_InvalidLzReceiveOption();
        gas = _option.toU128(0);
        value = _option.length == 32 ? _option.toU128(16) : 0;
    }

    function decodeNativeDropOption(bytes calldata _option) internal pure returns (uint128 amount, bytes32 receiver) {
        if (_option.length != 48) revert Executor_InvalidNativeDropOption();
        amount = _option.toU128(0);
        receiver = _option.toB32(16);
    }

    function decodeLzComposeOption(
        bytes calldata _option
    ) internal pure returns (uint16 index, uint128 gas, uint128 value) {
        if (_option.length != 18 && _option.length != 34) revert Executor_InvalidLzComposeOption();
        index = _option.toU16(0);
        gas = _option.toU128(2);
        value = _option.length == 34 ? _option.toU128(18) : 0;
    }

    function encodeLzReceiveOption(uint128 _gas, uint128 _value) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_gas) : abi.encodePacked(_gas, _value);
    }

    function encodeNativeDropOption(uint128 _amount, bytes32 _receiver) internal pure returns (bytes memory) {
        return abi.encodePacked(_amount, _receiver);
    }

    function encodeLzComposeOption(uint16 _index, uint128 _gas, uint128 _value) internal pure returns (bytes memory) {
        return _value == 0 ? abi.encodePacked(_index, _gas) : abi.encodePacked(_index, _gas, _value);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { ILayerZeroEndpointV2 } from "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol";

/**
 * @title IOAppCore
 */
interface IOAppCore {
    // Custom error messages
    error OnlyPeer(uint32 eid, bytes32 sender);
    error NoPeer(uint32 eid);
    error InvalidEndpointCall();
    error InvalidDelegate();

    // Event emitted when a peer (OApp) is set for a corresponding endpoint
    event PeerSet(uint32 eid, bytes32 peer);

    /**
     * @notice Retrieves the OApp version information.
     * @return senderVersion The version of the OAppSender.sol contract.
     * @return receiverVersion The version of the OAppReceiver.sol contract.
     */
    function oAppVersion() external view returns (uint64 senderVersion, uint64 receiverVersion);

    /**
     * @notice Retrieves the LayerZero endpoint associated with the OApp.
     * @return iEndpoint The LayerZero endpoint as an interface.
     */
    function endpoint() external view returns (ILayerZeroEndpointV2 iEndpoint);

    /**
     * @notice Retrieves the peer (OApp) associated with a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @return peer The peer address (OApp instance) associated with the corresponding endpoint.
     */
    function peers(uint32 _eid) external view returns (bytes32 peer);

    /**
     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @param _peer The address of the peer to be associated with the corresponding endpoint.
     */
    function setPeer(uint32 _eid, bytes32 _peer) external;

    /**
     * @notice Sets the delegate address for the OApp Core.
     * @param _delegate The address of the delegate to be set.
     */
    function setDelegate(address _delegate) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { BytesLib } from "solidity-bytes-utils/contracts/BytesLib.sol";
import { SafeCast } from "@openzeppelin/contracts/utils/math/SafeCast.sol";

import { ExecutorOptions } from "@layerzerolabs/lz-evm-messagelib-v2/contracts/libs/ExecutorOptions.sol";
import { DVNOptions } from "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/libs/DVNOptions.sol";

/**
 * @title OptionsBuilder
 * @dev Library for building and encoding various message options.
 */
library OptionsBuilder {
    using SafeCast for uint256;
    using BytesLib for bytes;

    // Constants for options types
    uint16 internal constant TYPE_1 = 1; // legacy options type 1
    uint16 internal constant TYPE_2 = 2; // legacy options type 2
    uint16 internal constant TYPE_3 = 3;

    // Custom error message
    error InvalidSize(uint256 max, uint256 actual);
    error InvalidOptionType(uint16 optionType);

    // Modifier to ensure only options of type 3 are used
    modifier onlyType3(bytes memory _options) {
        if (_options.toUint16(0) != TYPE_3) revert InvalidOptionType(_options.toUint16(0));
        _;
    }

    /**
     * @dev Creates a new options container with type 3.
     * @return options The newly created options container.
     */
    function newOptions() internal pure returns (bytes memory) {
        return abi.encodePacked(TYPE_3);
    }

    /**
     * @dev Adds an executor LZ receive option to the existing options.
     * @param _options The existing options container.
     * @param _gas The gasLimit used on the lzReceive() function in the OApp.
     * @param _value The msg.value passed to the lzReceive() function in the OApp.
     * @return options The updated options container.
     *
     * @dev When multiples of this option are added, they are summed by the executor
     * eg. if (_gas: 200k, and _value: 1 ether) AND (_gas: 100k, _value: 0.5 ether) are sent in an option to the LayerZeroEndpoint,
     * that becomes (300k, 1.5 ether) when the message is executed on the remote lzReceive() function.
     */
    function addExecutorLzReceiveOption(
        bytes memory _options,
        uint128 _gas,
        uint128 _value
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeLzReceiveOption(_gas, _value);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_LZRECEIVE, option);
    }

    /**
     * @dev Adds an executor native drop option to the existing options.
     * @param _options The existing options container.
     * @param _amount The amount for the native value that is airdropped to the 'receiver'.
     * @param _receiver The receiver address for the native drop option.
     * @return options The updated options container.
     *
     * @dev When multiples of this option are added, they are summed by the executor on the remote chain.
     */
    function addExecutorNativeDropOption(
        bytes memory _options,
        uint128 _amount,
        bytes32 _receiver
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeNativeDropOption(_amount, _receiver);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_NATIVE_DROP, option);
    }

    // /**
    //  * @dev Adds an executor native drop option to the existing options.
    //  * @param _options The existing options container.
    //  * @param _amount The amount for the native value that is airdropped to the 'receiver'.
    //  * @param _receiver The receiver address for the native drop option.
    //  * @return options The updated options container.
    //  *
    //  * @dev When multiples of this option are added, they are summed by the executor on the remote chain.
    //  */
    function addExecutorLzReadOption(
        bytes memory _options,
        uint128 _gas,
        uint32 _size,
        uint128 _value
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeLzReadOption(_gas, _size, _value);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_LZREAD, option);
    }

    /**
     * @dev Adds an executor LZ compose option to the existing options.
     * @param _options The existing options container.
     * @param _index The index for the lzCompose() function call.
     * @param _gas The gasLimit for the lzCompose() function call.
     * @param _value The msg.value for the lzCompose() function call.
     * @return options The updated options container.
     *
     * @dev When multiples of this option are added, they are summed PER index by the executor on the remote chain.
     * @dev If the OApp sends N lzCompose calls on the remote, you must provide N incremented indexes starting with 0.
     * ie. When your remote OApp composes (N = 3) messages, you must set this option for index 0,1,2
     */
    function addExecutorLzComposeOption(
        bytes memory _options,
        uint16 _index,
        uint128 _gas,
        uint128 _value
    ) internal pure onlyType3(_options) returns (bytes memory) {
        bytes memory option = ExecutorOptions.encodeLzComposeOption(_index, _gas, _value);
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_LZCOMPOSE, option);
    }

    /**
     * @dev Adds an executor ordered execution option to the existing options.
     * @param _options The existing options container.
     * @return options The updated options container.
     */
    function addExecutorOrderedExecutionOption(
        bytes memory _options
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return addExecutorOption(_options, ExecutorOptions.OPTION_TYPE_ORDERED_EXECUTION, bytes(""));
    }

    /**
     * @dev Adds a DVN pre-crime option to the existing options.
     * @param _options The existing options container.
     * @param _dvnIdx The DVN index for the pre-crime option.
     * @return options The updated options container.
     */
    function addDVNPreCrimeOption(
        bytes memory _options,
        uint8 _dvnIdx
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return addDVNOption(_options, _dvnIdx, DVNOptions.OPTION_TYPE_PRECRIME, bytes(""));
    }

    /**
     * @dev Adds an executor option to the existing options.
     * @param _options The existing options container.
     * @param _optionType The type of the executor option.
     * @param _option The encoded data for the executor option.
     * @return options The updated options container.
     */
    function addExecutorOption(
        bytes memory _options,
        uint8 _optionType,
        bytes memory _option
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return
            abi.encodePacked(
                _options,
                ExecutorOptions.WORKER_ID,
                _option.length.toUint16() + 1, // +1 for optionType
                _optionType,
                _option
            );
    }

    /**
     * @dev Adds a DVN option to the existing options.
     * @param _options The existing options container.
     * @param _dvnIdx The DVN index for the DVN option.
     * @param _optionType The type of the DVN option.
     * @param _option The encoded data for the DVN option.
     * @return options The updated options container.
     */
    function addDVNOption(
        bytes memory _options,
        uint8 _dvnIdx,
        uint8 _optionType,
        bytes memory _option
    ) internal pure onlyType3(_options) returns (bytes memory) {
        return
            abi.encodePacked(
                _options,
                DVNOptions.WORKER_ID,
                _option.length.toUint16() + 2, // +2 for optionType and dvnIdx
                _dvnIdx,
                _optionType,
                _option
            );
    }

    /**
     * @dev Encodes legacy options of type 1.
     * @param _executionGas The gasLimit value passed to lzReceive().
     * @return legacyOptions The encoded legacy options.
     */
    function encodeLegacyOptionsType1(uint256 _executionGas) internal pure returns (bytes memory) {
        if (_executionGas > type(uint128).max) revert InvalidSize(type(uint128).max, _executionGas);
        return abi.encodePacked(TYPE_1, _executionGas);
    }

    /**
     * @dev Encodes legacy options of type 2.
     * @param _executionGas The gasLimit value passed to lzReceive().
     * @param _nativeForDst The amount of native air dropped to the receiver.
     * @param _receiver The _nativeForDst receiver address.
     * @return legacyOptions The encoded legacy options of type 2.
     */
    function encodeLegacyOptionsType2(
        uint256 _executionGas,
        uint256 _nativeForDst,
        bytes memory _receiver // @dev Use bytes instead of bytes32 in legacy type 2 for _receiver.
    ) internal pure returns (bytes memory) {
        if (_executionGas > type(uint128).max) revert InvalidSize(type(uint128).max, _executionGas);
        if (_nativeForDst > type(uint128).max) revert InvalidSize(type(uint128).max, _nativeForDst);
        if (_receiver.length > 32) revert InvalidSize(32, _receiver.length);
        return abi.encodePacked(TYPE_2, _executionGas, _nativeForDst, _receiver);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { IOAppCore, ILayerZeroEndpointV2 } from "./interfaces/IOAppCore.sol";

/**
 * @title OAppCore
 * @dev Abstract contract implementing the IOAppCore interface with basic OApp configurations.
 */
abstract contract OAppCore is IOAppCore, Ownable {
    // The LayerZero endpoint associated with the given OApp
    ILayerZeroEndpointV2 public immutable endpoint;

    // Mapping to store peers associated with corresponding endpoints
    mapping(uint32 eid => bytes32 peer) public peers;

    /**
     * @dev Constructor to initialize the OAppCore with the provided endpoint and delegate.
     * @param _endpoint The address of the LOCAL Layer Zero endpoint.
     * @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
     *
     * @dev The delegate typically should be set as the owner of the contract.
     */
    constructor(address _endpoint, address _delegate) {
        endpoint = ILayerZeroEndpointV2(_endpoint);

        if (_delegate == address(0)) revert InvalidDelegate();
        endpoint.setDelegate(_delegate);
    }

    /**
     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @param _peer The address of the peer to be associated with the corresponding endpoint.
     *
     * @dev Only the owner/admin of the OApp can call this function.
     * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.
     * @dev Set this to bytes32(0) to remove the peer address.
     * @dev Peer is a bytes32 to accommodate non-evm chains.
     */
    function setPeer(uint32 _eid, bytes32 _peer) public virtual onlyOwner {
        _setPeer(_eid, _peer);
    }

    /**
     * @notice Sets the peer address (OApp instance) for a corresponding endpoint.
     * @param _eid The endpoint ID.
     * @param _peer The address of the peer to be associated with the corresponding endpoint.
     *
     * @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.
     * @dev Set this to bytes32(0) to remove the peer address.
     * @dev Peer is a bytes32 to accommodate non-evm chains.
     */
    function _setPeer(uint32 _eid, bytes32 _peer) internal virtual {
        peers[_eid] = _peer;
        emit PeerSet(_eid, _peer);
    }

    /**
     * @notice Internal function to get the peer address associated with a specific endpoint; reverts if NOT set.
     * ie. the peer is set to bytes32(0).
     * @param _eid The endpoint ID.
     * @return peer The address of the peer associated with the specified endpoint.
     */
    function _getPeerOrRevert(uint32 _eid) internal view virtual returns (bytes32) {
        bytes32 peer = peers[_eid];
        if (peer == bytes32(0)) revert NoPeer(_eid);
        return peer;
    }

    /**
     * @notice Sets the delegate address for the OApp.
     * @param _delegate The address of the delegate to be set.
     *
     * @dev Only the owner/admin of the OApp can call this function.
     * @dev Provides the ability for a delegate to set configs, on behalf of the OApp, directly on the Endpoint contract.
     */
    function setDelegate(address _delegate) public onlyOwner {
        endpoint.setDelegate(_delegate);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { MessagingParams, MessagingFee, MessagingReceipt } from "@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol";
import { OAppCore } from "./OAppCore.sol";

/**
 * @title OAppSender
 * @dev Abstract contract implementing the OAppSender functionality for sending messages to a LayerZero endpoint.
 */
abstract contract OAppSender is OAppCore {
    using SafeERC20 for IERC20;

    // Custom error messages
    error NotEnoughNative(uint256 msgValue);
    error LzTokenUnavailable();

    // @dev The version of the OAppSender implementation.
    // @dev Version is bumped when changes are made to this contract.
    uint64 internal constant SENDER_VERSION = 1;

    /**
     * @notice Retrieves the OApp version information.
     * @return senderVersion The version of the OAppSender.sol contract.
     * @return receiverVersion The version of the OAppReceiver.sol contract.
     *
     * @dev Providing 0 as the default for OAppReceiver version. Indicates that the OAppReceiver is not implemented.
     * ie. this is a SEND only OApp.
     * @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions
     */
    function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {
        return (SENDER_VERSION, 0);
    }

    /**
     * @dev Internal function to interact with the LayerZero EndpointV2.quote() for fee calculation.
     * @param _dstEid The destination endpoint ID.
     * @param _message The message payload.
     * @param _options Additional options for the message.
     * @param _payInLzToken Flag indicating whether to pay the fee in LZ tokens.
     * @return fee The calculated MessagingFee for the message.
     *      - nativeFee: The native fee for the message.
     *      - lzTokenFee: The LZ token fee for the message.
     */
    function _quote(
        uint32 _dstEid,
        bytes memory _message,
        bytes memory _options,
        bool _payInLzToken
    ) internal view virtual returns (MessagingFee memory fee) {
        return
            endpoint.quote(
                MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _payInLzToken),
                address(this)
            );
    }

    /**
     * @dev Internal function to interact with the LayerZero EndpointV2.send() for sending a message.
     * @param _dstEid The destination endpoint ID.
     * @param _message The message payload.
     * @param _options Additional options for the message.
     * @param _fee The calculated LayerZero fee for the message.
     *      - nativeFee: The native fee.
     *      - lzTokenFee: The lzToken fee.
     * @param _refundAddress The address to receive any excess fee values sent to the endpoint.
     * @return receipt The receipt for the sent message.
     *      - guid: The unique identifier for the sent message.
     *      - nonce: The nonce of the sent message.
     *      - fee: The LayerZero fee incurred for the message.
     */
    function _lzSend(
        uint32 _dstEid,
        bytes memory _message,
        bytes memory _options,
        MessagingFee memory _fee,
        address _refundAddress
    ) internal virtual returns (MessagingReceipt memory receipt) {
        // @dev Push corresponding fees to the endpoint, any excess is sent back to the _refundAddress from the endpoint.
        uint256 messageValue = _payNative(_fee.nativeFee);
        if (_fee.lzTokenFee > 0) _payLzToken(_fee.lzTokenFee);

        return
            // solhint-disable-next-line check-send-result
            endpoint.send{ value: messageValue }(
                MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _fee.lzTokenFee > 0),
                _refundAddress
            );
    }

    /**
     * @dev Internal function to pay the native fee associated with the message.
     * @param _nativeFee The native fee to be paid.
     * @return nativeFee The amount of native currency paid.
     *
     * @dev If the OApp needs to initiate MULTIPLE LayerZero messages in a single transaction,
     * this will need to be overridden because msg.value would contain multiple lzFees.
     * @dev Should be overridden in the event the LayerZero endpoint requires a different native currency.
     * @dev Some EVMs use an ERC20 as a method for paying transactions/gasFees.
     * @dev The endpoint is EITHER/OR, ie. it will NOT support both types of native payment at a time.
     */
    function _payNative(uint256 _nativeFee) internal virtual returns (uint256 nativeFee) {
        if (msg.value != _nativeFee) revert NotEnoughNative(msg.value);
        return _nativeFee;
    }

    /**
     * @dev Internal function to pay the LZ token fee associated with the message.
     * @param _lzTokenFee The LZ token fee to be paid.
     *
     * @dev If the caller is trying to pay in the specified lzToken, then the lzTokenFee is passed to the endpoint.
     * @dev Any excess sent, is passed back to the specified _refundAddress in the _lzSend().
     */
    function _payLzToken(uint256 _lzTokenFee) internal virtual {
        // @dev Cannot cache the token because it is not immutable in the endpoint.
        address lzToken = endpoint.lzToken();
        if (lzToken == address(0)) revert LzTokenUnavailable();

        // Pay LZ token fee by sending tokens to the endpoint.
        IERC20(lzToken).safeTransferFrom(msg.sender, address(endpoint), _lzTokenFee);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.20;

import { MessagingReceipt, MessagingFee } from "@layerzerolabs/oapp-evm/contracts/oapp/OAppSender.sol";

/**
 * @dev Struct representing token parameters for the OFT send() operation.
 */
struct SendParam {
    uint32 dstEid; // Destination endpoint ID.
    bytes32 to; // Recipient address.
    uint256 amountLD; // Amount to send in local decimals.
    uint256 minAmountLD; // Minimum amount to send in local decimals.
    bytes extraOptions; // Additional options supplied by the caller to be used in the LayerZero message.
    bytes composeMsg; // The composed message for the send() operation.
    bytes oftCmd; // The OFT command to be executed, unused in default OFT implementations.
}

/**
 * @dev Struct representing OFT limit information.
 * @dev These amounts can change dynamically and are up the specific oft implementation.
 */
struct OFTLimit {
    uint256 minAmountLD; // Minimum amount in local decimals that can be sent to the recipient.
    uint256 maxAmountLD; // Maximum amount in local decimals that can be sent to the recipient.
}

/**
 * @dev Struct representing OFT receipt information.
 */
struct OFTReceipt {
    uint256 amountSentLD; // Amount of tokens ACTUALLY debited from the sender in local decimals.
    // @dev In non-default implementations, the amountReceivedLD COULD differ from this value.
    uint256 amountReceivedLD; // Amount of tokens to be received on the remote side.
}

/**
 * @dev Struct representing OFT fee details.
 * @dev Future proof mechanism to provide a standardized way to communicate fees to things like a UI.
 */
struct OFTFeeDetail {
    int256 feeAmountLD; // Amount of the fee in local decimals.
    string description; // Description of the fee.
}

/**
 * @title IOFT
 * @dev Interface for the OftChain (OFT) token.
 * @dev Does not inherit ERC20 to accommodate usage by OFTAdapter as well.
 * @dev This specific interface ID is '0x02e49c2c'.
 */
interface IOFT {
    // Custom error messages
    error InvalidLocalDecimals();
    error SlippageExceeded(uint256 amountLD, uint256 minAmountLD);

    // Events
    event OFTSent(
        bytes32 indexed guid, // GUID of the OFT message.
        uint32 dstEid, // Destination Endpoint ID.
        address indexed fromAddress, // Address of the sender on the src chain.
        uint256 amountSentLD, // Amount of tokens sent in local decimals.
        uint256 amountReceivedLD // Amount of tokens received in local decimals.
    );
    event OFTReceived(
        bytes32 indexed guid, // GUID of the OFT message.
        uint32 srcEid, // Source Endpoint ID.
        address indexed toAddress, // Address of the recipient on the dst chain.
        uint256 amountReceivedLD // Amount of tokens received in local decimals.
    );

    /**
     * @notice Retrieves interfaceID and the version of the OFT.
     * @return interfaceId The interface ID.
     * @return version The version.
     *
     * @dev interfaceId: This specific interface ID is '0x02e49c2c'.
     * @dev version: Indicates a cross-chain compatible msg encoding with other OFTs.
     * @dev If a new feature is added to the OFT cross-chain msg encoding, the version will be incremented.
     * ie. localOFT version(x,1) CAN send messages to remoteOFT version(x,1)
     */
    function oftVersion() external view returns (bytes4 interfaceId, uint64 version);

    /**
     * @notice Retrieves the address of the token associated with the OFT.
     * @return token The address of the ERC20 token implementation.
     */
    function token() external view returns (address);

    /**
     * @notice Indicates whether the OFT contract requires approval of the 'token()' to send.
     * @return requiresApproval Needs approval of the underlying token implementation.
     *
     * @dev Allows things like wallet implementers to determine integration requirements,
     * without understanding the underlying token implementation.
     */
    function approvalRequired() external view returns (bool);

    /**
     * @notice Retrieves the shared decimals of the OFT.
     * @return sharedDecimals The shared decimals of the OFT.
     */
    function sharedDecimals() external view returns (uint8);

    /**
     * @notice Provides the fee breakdown and settings data for an OFT. Unused in the default implementation.
     * @param _sendParam The parameters for the send operation.
     * @return limit The OFT limit information.
     * @return oftFeeDetails The details of OFT fees.
     * @return receipt The OFT receipt information.
     */
    function quoteOFT(
        SendParam calldata _sendParam
    ) external view returns (OFTLimit memory, OFTFeeDetail[] memory oftFeeDetails, OFTReceipt memory);

    /**
     * @notice Provides a quote for the send() operation.
     * @param _sendParam The parameters for the send() operation.
     * @param _payInLzToken Flag indicating whether the caller is paying in the LZ token.
     * @return fee The calculated LayerZero messaging fee from the send() operation.
     *
     * @dev MessagingFee: LayerZero msg fee
     *  - nativeFee: The native fee.
     *  - lzTokenFee: The lzToken fee.
     */
    function quoteSend(SendParam calldata _sendParam, bool _payInLzToken) external view returns (MessagingFee memory);

    /**
     * @notice Executes the send() operation.
     * @param _sendParam The parameters for the send operation.
     * @param _fee The fee information supplied by the caller.
     *      - nativeFee: The native fee.
     *      - lzTokenFee: The lzToken fee.
     * @param _refundAddress The address to receive any excess funds from fees etc. on the src.
     * @return receipt The LayerZero messaging receipt from the send() operation.
     * @return oftReceipt The OFT receipt information.
     *
     * @dev MessagingReceipt: LayerZero msg receipt
     *  - guid: The unique identifier for the sent message.
     *  - nonce: The nonce of the sent message.
     *  - fee: The LayerZero fee incurred for the message.
     */
    function send(
        SendParam calldata _sendParam,
        MessagingFee calldata _fee,
        address _refundAddress
    ) external payable returns (MessagingReceipt memory, OFTReceipt memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IBridge, MessengerProtocol} from "./interfaces/IBridge.sol";
import {Router} from "./Router.sol";
import {Messenger} from "./Messenger.sol";
import {MessengerGateway} from "./MessengerGateway.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {GasUsage} from "./GasUsage.sol";
import {WormholeMessenger} from "./WormholeMessenger.sol";
import {HashUtils} from "./libraries/HashUtils.sol";

/**
 * @title Bridge
 * @dev A contract with functions to facilitate bridging tokens across different blockchains.
 */
contract Bridge is GasUsage, Router, MessengerGateway, IBridge {
    using SafeERC20 for IERC20;
    using HashUtils for bytes32;

    uint public immutable override chainId;
    mapping(bytes32 messageHash => uint isProcessed) public override processedMessages;
    mapping(bytes32 messageHash => uint isSent) public override sentMessages;
    // Info about bridges on other chains
    mapping(uint chainId => bytes32 bridgeAddress) public override otherBridges;
    // Info about tokens on other chains
    mapping(uint chainId => mapping(bytes32 tokenAddress => bool isSupported)) public override otherBridgeTokens;

    /**
     * @dev Emitted when tokens are sent on the source blockchain.
     */
    event TokensSent(
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger
    );

    /**
     * @dev Emitted when the tokens are received on the destination blockchain.
     */
    event TokensReceived(uint amount, bytes32 recipient, uint nonce, MessengerProtocol messenger, bytes32 message);

    /**
     * @dev Emitted when this contract receives the bridging fee.
     */
    event ReceiveFee(uint bridgeTransactionCost, uint messageTransactionCost);

    /**
     * @dev Emitted when this contract charged the sender with the tokens for the bridging fee.
     */
    event BridgingFeeFromTokens(uint gas);

    /**
     * @dev Emitted when the contract receives native tokens (e.g. Ether on the Ethereum network) from the admin to
     * supply the gas for bridging.
     */
    event Received(address sender, uint amount);

    constructor(
        uint chainId_,
        uint chainPrecision_,
        Messenger allbridgeMessenger_,
        WormholeMessenger wormholeMessenger_,
        IGasOracle gasOracle_
    ) Router(chainPrecision_) MessengerGateway(allbridgeMessenger_, wormholeMessenger_) GasUsage(gasOracle_) {
        chainId = chainId_;
    }

    /**
     * @notice Initiates a swap and bridge process of a given token for a token on another blockchain.
     * @dev This function is used to initiate a cross-chain transfer. The specified amount of token is first transferred
     * to the pool on the current chain, and then an event `TokensSent` is emitted to signal that tokens have been sent
     * on the source chain. See the function `receiveTokens`.
     * The bridging fee required for the cross-chain transfer can be paid in two ways:
     * - by sending the required amount of native gas token along with the transaction
     *   (See `getTransactionCost` in the `GasUsage` contract and `getMessageCost` in the `MessengerGateway` contract).
     * - by setting the parameter `feeTokenAmount` with the bridging fee amount in the source tokens
     *   (See the function `getBridgingCostInTokens`).
     * @param token The token to be swapped.
     * @param amount The amount of tokens to be swapped (including `feeTokenAmount`).
     * @param destinationChainId The ID of the destination chain.
     * @param receiveToken The token to receive in exchange for the swapped token.
     * @param nonce An identifier that is used to ensure that each transfer is unique and can only be processed once.
     * @param messenger The chosen way of delivering the message across chains.
     * @param feeTokenAmount The amount of tokens to be deducted from the transferred amount as a bridging fee.
     *
     */
    function swapAndBridge(
        bytes32 token,
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger,
        uint feeTokenAmount
    ) external payable override whenCanSwap {
        require(amount > feeTokenAmount, "Bridge: amount too low for fee");
        require(recipient != 0, "Bridge: bridge to the zero address");
        uint bridgingFee = msg.value + _convertBridgingFeeInTokensToNativeToken(msg.sender, token, feeTokenAmount);
        uint amountAfterFee = amount - feeTokenAmount;

        uint vUsdAmount = _sendAndSwapToVUsd(token, msg.sender, amountAfterFee);
        _sendTokens(vUsdAmount, recipient, destinationChainId, receiveToken, nonce, messenger, bridgingFee);
    }

    /**
     * @notice Completes the bridging process by sending the tokens on the destination chain to the recipient.
     * @dev This function is called only after a bridging has been initiated by a user
     *      through the `swapAndBridge` function on the source chain.
     * @param amount The amount of tokens being bridged.
     * @param recipient The recipient address for the bridged tokens.
     * @param sourceChainId The ID of the source chain.
     * @param receiveToken The address of the token being received.
     * @param nonce A unique nonce for the bridging transaction.
     * @param messenger The protocol used to relay the message.
     * @param receiveAmountMin The minimum amount of receiveToken required to be received.
     */
    function receiveTokens(
        uint amount,
        bytes32 recipient,
        uint sourceChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger,
        uint receiveAmountMin
    ) external payable override whenCanSwap {
        require(otherBridges[sourceChainId] != bytes32(0), "Bridge: source not registered");
        bytes32 messageWithSender = this
            .hashMessage(amount, recipient, sourceChainId, chainId, receiveToken, nonce, messenger)
            .hashWithSender(otherBridges[sourceChainId]);

        require(processedMessages[messageWithSender] == 0, "Bridge: message processed");
        // mark the transfer as received on the destination chain
        processedMessages[messageWithSender] = 1;

        // check if tokens has been sent on the source chain
        require(this.hasReceivedMessage(messageWithSender, messenger), "Bridge: no message");

        uint receiveAmount = _receiveAndSwapFromVUsd(
            receiveToken,
            address(uint160(uint(recipient))),
            amount,
            receiveAmountMin
        );
        // pass extra gas to the recipient
        if (msg.value > 0) {
            // ignore if passing extra gas failed
            // solc-ignore-next-line unused-call-retval
            payable(address(uint160(uint(recipient)))).call{value: msg.value}("");
        }
        emit TokensReceived(receiveAmount, recipient, nonce, messenger, messageWithSender);
    }

    /**
     * @notice Allows the admin to add new supported chain destination.
     * @dev Registers the address of a bridge deployed on a different chain.
     * @param chainId_ The chain ID of the bridge to register.
     * @param bridgeAddress The address of the bridge contract to register.
     */
    function registerBridge(uint chainId_, bytes32 bridgeAddress) external override onlyOwner {
        otherBridges[chainId_] = bridgeAddress;
    }

    /**
     * @notice Allows the admin to add a new supported destination token.
     * @dev Adds the address of a token on another chain to the list of supported tokens for the specified chain.
     * @param chainId_ The chain ID where the token is deployed.
     * @param tokenAddress The address of the token to add as a supported token.
     */
    function addBridgeToken(uint chainId_, bytes32 tokenAddress) external override onlyOwner {
        otherBridgeTokens[chainId_][tokenAddress] = true;
    }

    /**
     * @notice Allows the admin to remove support for a destination token.
     * @dev Removes the address of a token on another chain from the list of supported tokens for the specified chain.
     * @param chainId_ The chain ID where the token is deployed.
     * @param tokenAddress The address of the token to remove from the list of supported tokens.
     */
    function removeBridgeToken(uint chainId_, bytes32 tokenAddress) external override onlyOwner {
        otherBridgeTokens[chainId_][tokenAddress] = false;
    }

    /**
     * @notice Allows the admin to withdraw the bridging fee collected in native tokens.
     */
    function withdrawGasTokens(uint amount) external override onlyOwner {
        payable(msg.sender).transfer(amount);
    }

    /**
     * @notice Allows the admin to withdraw the bridging fee collected in tokens.
     * @param token The address of the token contract.
     */
    function withdrawBridgingFeeInTokens(IERC20 token) external onlyOwner {
        uint toWithdraw = token.balanceOf(address(this));
        if (toWithdraw > 0) {
            token.safeTransfer(msg.sender, toWithdraw);
        }
    }

    /**
     * @dev Calculates the amount of bridging fee nominated in a given token, which includes:
     * - the gas cost of making the receive transaction on the destination chain,
     * - the gas cost of sending the message to the destination chain using the specified messenger protocol.
     * @param destinationChainId The ID of the destination chain.
     * @param messenger The chosen way of delivering the message across chains.
     * @param tokenAddress The address of the token contract on the source chain.
     * @return The total price of bridging, with the precision according to the token's `decimals()` value.
     */
    function getBridgingCostInTokens(
        uint destinationChainId,
        MessengerProtocol messenger,
        address tokenAddress
    ) external view override returns (uint) {
        return
            gasOracle.getTransactionGasCostInUSD(
                destinationChainId,
                gasUsage[destinationChainId] + getMessageGasUsage(destinationChainId, messenger)
            ) / fromGasOracleScalingFactor[tokenAddress];
    }

    /**
     * @dev Produces a hash of transfer parameters, which is used as a message to the bridge on the destination chain
     *      to notify that the tokens on the source chain has been sent.
     * @param amount The amount of tokens being transferred.
     * @param recipient The address of the recipient on the destination chain.
     * @param sourceChainId The ID of the source chain.
     * @param destinationChainId The ID of the destination chain.
     * @param receiveToken The token being received on the destination chain.
     * @param nonce The unique nonce.
     * @param messenger The chosen way of delivering the message across chains.
     */
    function hashMessage(
        uint amount,
        bytes32 recipient,
        uint sourceChainId,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger
    ) external pure override returns (bytes32) {
        return
            keccak256(abi.encodePacked(amount, recipient, sourceChainId, receiveToken, nonce, messenger))
                .replaceChainBytes(uint8(sourceChainId), uint8(destinationChainId));
    }

    function _sendTokens(
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger,
        uint bridgingFee
    ) internal {
        require(destinationChainId != chainId, "Bridge: wrong destination chain");
        require(otherBridgeTokens[destinationChainId][receiveToken], "Bridge: unknown chain or token");
        bytes32 message = this.hashMessage(
            amount,
            recipient,
            chainId,
            destinationChainId,
            receiveToken,
            nonce,
            messenger
        );

        require(sentMessages[message] == 0, "Bridge: tokens already sent");
        // mark the transfer as sent on the source chain
        sentMessages[message] = 1;

        uint bridgeTransactionCost = this.getTransactionCost(destinationChainId);
        uint messageTransactionCost = _sendMessage(message, messenger);
        emit ReceiveFee(bridgeTransactionCost, messageTransactionCost);
        unchecked {
            require(bridgingFee >= bridgeTransactionCost + messageTransactionCost, "Bridge: not enough fee");
        }
        emit TokensSent(amount, recipient, destinationChainId, receiveToken, nonce, messenger);
    }

    /**
     * @dev Charges the bridging fee in tokens and calculates the amount of native tokens that correspond
     *      to the charged fee using the current exchange rate.
     * @param user The address of the user who is paying the bridging fee
     * @param tokenAddress The address of the token used to pay the bridging fee
     * @param feeTokenAmount The amount of tokens to pay as the bridging fee
     * @return bridging fee amount in the native tokens (e.g. in wei for Ethereum)
     */
    function _convertBridgingFeeInTokensToNativeToken(
        address user,
        bytes32 tokenAddress,
        uint feeTokenAmount
    ) internal returns (uint) {
        if (feeTokenAmount == 0) return 0;
        address tokenAddress_ = address(uint160(uint(tokenAddress)));

        IERC20 token = IERC20(tokenAddress_);
        token.safeTransferFrom(user, address(this), feeTokenAmount);

        uint fee = (bridgingFeeConversionScalingFactor[tokenAddress_] * feeTokenAmount) / gasOracle.price(chainId);

        emit BridgingFeeFromTokens(fee);
        return fee;
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        emit Received(msg.sender, msg.value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {ITokenMessenger} from "./interfaces/cctp/ITokenMessenger.sol";
import {IMessageTransmitter} from "./interfaces/cctp/IMessageTransmitter.sol";
import {GasUsage} from "./GasUsage.sol";

contract CctpBridge is GasUsage {
    using SafeERC20 for IERC20Metadata;

    uint internal constant ORACLE_PRECISION = 18;
    uint internal constant BP = 1e4;

    uint public immutable chainId;
    // Admin fee share (in basis points)
    uint public adminFeeShareBP;
    IERC20Metadata private immutable token;
    ITokenMessenger private immutable cctpMessenger;
    IMessageTransmitter private immutable cctpTransmitter;
    // precomputed value of the scaling factor required for converting the stable token to gas amount
    uint private immutable stableTokensForGasScalingFactor;
    // precomputed value to divide by to change the precision from the Gas Oracle precision to the stable token precision
    uint private immutable fromGasOracleScalingFactor;

    mapping(uint chainId => uint domainNumber) private chainIdDomainMap;
    mapping(uint nonce => address sender) private senders;

    /**
     * @notice Emitted when the contract receives some gas directly.
     */
    event ReceivedGas(address sender, uint amount);

    /**
     * @notice Emitted when the contract sends some extra gas to the recipient of tokens.
     */
    event ReceivedExtraGas(address recipient, uint amount);

    /**
     * @notice Emitted when tokens are sent on the source blockchain.
     */
    event TokensSent(
        uint amount,
        address sender,
        bytes32 recipient,
        uint destinationChainId,
        uint nonce,
        uint receivedRelayerFeeFromGas,
        uint receivedRelayerFeeFromTokens,
        uint relayerFee,
        uint receivedRelayerFeeTokenAmount,
        uint adminFeeTokenAmount
    );

    event TokensSentExtras(bytes32 recipientWalletAddress);

    event RecipientReplaced(address sender, uint nonce, bytes32 newRecipient);

    constructor(
        uint chainId_,
        uint chainPrecision_,
        address tokenAddress,
        address cctpMessenger_,
        address cctpTransmitter_,
        IGasOracle gasOracle_
    ) GasUsage(gasOracle_) {
        chainId = chainId_;
        token = IERC20Metadata(tokenAddress);
        uint tokenDecimals = token.decimals();
        cctpMessenger = ITokenMessenger(cctpMessenger_);
        cctpTransmitter = IMessageTransmitter(cctpTransmitter_);
        token.approve(cctpMessenger_, type(uint256).max);
        stableTokensForGasScalingFactor = 10 ** (ORACLE_PRECISION - tokenDecimals + chainPrecision_);
        fromGasOracleScalingFactor = 10 ** (ORACLE_PRECISION - tokenDecimals);
    }

    /**
     * @notice Initiates a bridging process of the token to another blockchain.
     * @dev This function is used to initiate a cross-chain transfer.
     * The bridging fee required for the cross-chain transfer can be paid in two ways:
     * - by sending the required amount of native gas token along with the transaction
     *   (See `getTransactionCost` in the `GasUsage` contract).
     * - by setting the parameter `relayerFeeTokenAmount` with the amount of bridging fee in tokens
     *   (See the function `getBridgingCostInTokens`).
     * @param amount The amount of tokens to send (including `relayerFeeTokenAmount`).
     * @param recipient The recipient address.
     * @param destinationChainId The ID of the destination chain.
     * @param relayerFeeTokenAmount The amount of tokens to be deducted from the transferred amount as a bridging fee.
     */
    function bridge(
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        uint relayerFeeTokenAmount
    ) public payable {
        require(amount > relayerFeeTokenAmount, "CCTP: Amount <= relayer fee");
        require(recipient != 0, "CCTP: Recipient must be nonzero");
        token.safeTransferFrom(msg.sender, address(this), amount);
        uint gasFromStables = _getStableTokensValueInGas(relayerFeeTokenAmount);
        uint relayerFee = this.getTransactionCost(destinationChainId);
        require(msg.value + gasFromStables >= relayerFee, "CCTP: Not enough fee");
        uint amountToSend = amount - relayerFeeTokenAmount;
        uint adminFee;
        if (adminFeeShareBP != 0) {
            adminFee = (amountToSend * adminFeeShareBP) / BP;
            if (adminFee == 0) {
                adminFee = 1;
            }
            amountToSend -= adminFee;
        }
        uint32 destinationDomain = getDomainByChainId(destinationChainId);
        uint64 nonce = cctpMessenger.depositForBurn(amountToSend, destinationDomain, recipient, address(token));
        senders[nonce] = msg.sender;
        emit TokensSent(
            amountToSend,
            msg.sender,
            recipient,
            destinationChainId,
            nonce,
            msg.value,
            gasFromStables,
            relayerFee,
            relayerFeeTokenAmount,
            adminFee
        );
    }

    /**
     * @notice Public method to initiate a bridging process of the token to another blockchain. Used for recipients with different wallet address (Solana)
     * @dev See full description in the bridge method
     * @param recipientWalletAddress The recipient wallet address - used to track user for transfers to Solana.
     **/
    function bridgeWithWalletAddress(
        uint amount,
        bytes32 recipient,
        bytes32 recipientWalletAddress,
        uint destinationChainId,
        uint relayerFeeTokenAmount
    ) external payable {
        bridge(amount, recipient, destinationChainId, relayerFeeTokenAmount);

        emit TokensSentExtras(recipientWalletAddress);
    }

    /**
     * @notice Public method to replace recipient if it was accidentally incorrectly specified
     * @param originalMessage original message bytes (to replace)
     * @param originalAttestation original attestation bytes
     * @param newRecipient the new mint recipient, which may be the same as the
     * original mint recipient, or different.
     **/
    function changeRecipient(
        bytes calldata originalMessage,
        bytes calldata originalAttestation,
        bytes32 newRecipient
    ) external {
        uint64 nonce = uint64(bytes8(originalMessage[12:20]));
        require(senders[nonce] == msg.sender, "CCTP: wrong sender");
        cctpMessenger.replaceDepositForBurn(originalMessage, originalAttestation, bytes32(0), newRecipient);
        emit RecipientReplaced(msg.sender, nonce, newRecipient);
    }

    /**
     * @notice Completes the bridging process by sending the tokens on the destination blockchain to the recipient.
     * @param recipient The recipient address.
     * @param message The message information emitted by the CCTP contract `MessageTransmitter` on the source chain.
     * @param signature Concatenated 65-byte signature(s) of `message`.
     */
    function receiveTokens(address recipient, bytes calldata message, bytes calldata signature) external payable {
        require(cctpTransmitter.receiveMessage(message, signature), "CCTP: Receive message failed");
        // pass extra gas to the recipient
        if (msg.value > 0) {
            (bool sent, ) = payable(recipient).call{value: msg.value}("");
            if (sent) {
                emit ReceivedExtraGas(recipient, msg.value);
            }
        }
    }

    /**
     * @notice Allows the admin to add new supported chain destination.
     * @param chainId_ The chain ID of the destination to register.
     * @param domain The domain of the destination to register.
     */
    function registerBridgeDestination(uint chainId_, uint32 domain) external onlyOwner {
        chainIdDomainMap[chainId_] = domain + 1;
    }

    /**
     * @notice Allows the admin to remove a chain from the map of supported destinations.
     * @param chainId_ The chain ID of the destination to unregister.
     */
    function unregisterBridgeDestination(uint chainId_) external onlyOwner {
        chainIdDomainMap[chainId_] = 0;
    }

    /**
     * @notice Allows the admin to withdraw the relayer fee collected in gas tokens.
     */
    function withdrawGas(uint amount) external onlyOwner {
        payable(msg.sender).transfer(amount);
    }

    /**
     * @notice Allows the admin to withdraw the admin fee and relayer fee collected in tokens.
     */
    function withdrawFeeInTokens() external onlyOwner {
        uint toWithdraw = token.balanceOf(address(this));
        if (toWithdraw > 0) {
            token.safeTransfer(msg.sender, toWithdraw);
        }
    }

    /**
     * @notice Sets the basis points of the admin fee share from each bridge.
     */
    function setAdminFeeShare(uint adminFeeShareBP_) external onlyOwner {
        require(adminFeeShareBP_ <= BP, "CCTP: Too high");
        adminFeeShareBP = adminFeeShareBP_;
    }

    /**
     * @notice Calculates the amount of bridging fee nominated in the stable token.
     * @param destinationChainId The ID of the destination chain.
     * @return The total price of bridging, with the precision according to the token's `decimals()` value.
     */
    function getBridgingCostInTokens(uint destinationChainId) external view returns (uint) {
        return
            gasOracle.getTransactionGasCostInUSD(destinationChainId, gasUsage[destinationChainId]) /
            fromGasOracleScalingFactor;
    }

    function isMessageProcessed(uint sourceChainId, uint64 nonce) external view returns (bool) {
        return cctpTransmitter.usedNonces(_hashSourceAndNonce(getDomainByChainId(sourceChainId), nonce)) != 0;
    }

    function getDomainByChainId(uint chainId_) public view returns (uint32) {
        uint domainNumber = chainIdDomainMap[chainId_];
        require(domainNumber > 0, "CCTP: Unknown chain id");
        return uint32(domainNumber - 1);
    }

    /**
     * @notice Calculates the amount of gas equivalent in value to provided amount of tokens
     * according to the current exchange rate.
     * @param stableTokenAmount The amount of tokens.
     * @return amount of gas tokens.
     */
    function _getStableTokensValueInGas(uint stableTokenAmount) internal view returns (uint) {
        if (stableTokenAmount == 0) return 0;
        return (stableTokensForGasScalingFactor * stableTokenAmount) / gasOracle.price(chainId);
    }

    function _hashSourceAndNonce(uint32 sourceDomain, uint64 nonce) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(sourceDomain, nonce));
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        emit ReceivedGas(msg.sender, msg.value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {ITokenMessengerV2} from "./interfaces/cctp/ITokenMessengerV2.sol";
import {IMessageTransmitter} from "./interfaces/cctp/IMessageTransmitter.sol";
import {GasUsage} from "./GasUsage.sol";

contract CctpV2Bridge is GasUsage {
    using SafeERC20 for IERC20Metadata;

    uint internal constant ORACLE_PRECISION = 18;
    uint internal constant BP = 1e4;
    uint internal constant MAX_FEE_SHARE_P = 1e9;
    uint32 public minFinalityThreshold = 1000;

    uint public immutable chainId;
    // Admin fee share (in basis points)
    uint public adminFeeShareBP = 10;
    uint public maxFeeShare = 100000;
    IERC20Metadata private immutable token;
    ITokenMessengerV2 private immutable cctpMessenger;
    IMessageTransmitter private immutable cctpTransmitter;
    // precomputed value of the scaling factor required for converting the stable token to gas amount
    uint private immutable stableTokensForGasScalingFactor;
    // precomputed value to divide by to change the precision from the Gas Oracle precision to the stable token precision
    uint private immutable fromGasOracleScalingFactor;

    mapping(uint chainId => uint domainNumber) private chainIdDomainMap;

    /**
     * @notice Emitted when the contract receives some gas directly.
     */
    event ReceivedGas(address sender, uint amount);

    /**
     * @notice Emitted when the contract receives message
     */
    event ReceivedMessageId(bytes32 messageId);

    /**
     * @notice Emitted when the contract sends some extra gas to the recipient of tokens.
     */
    event ReceivedExtraGas(address recipient, uint amount);

    /**
     * @notice Emitted when tokens are sent on the source blockchain.
     */
    event TokensSent(
        address sender,
        bytes32 recipient,
        uint amount,
        uint destinationChainId,
        uint receivedRelayerFeeFromGas,
        uint receivedRelayerFeeFromTokens,
        uint relayerFee,
        uint receivedRelayerFeeTokenAmount,
        uint adminFeeTokenAmount,
        uint maxFee
    );

    event TokensSentExtras(bytes32 recipientWalletAddress);

    constructor(
        uint chainId_,
        uint chainPrecision_,
        address tokenAddress,
        address cctpMessenger_,
        address cctpTransmitter_,
        IGasOracle gasOracle_
    ) GasUsage(gasOracle_) {
        chainId = chainId_;
        token = IERC20Metadata(tokenAddress);
        uint tokenDecimals = token.decimals();
        cctpMessenger = ITokenMessengerV2(cctpMessenger_);
        cctpTransmitter = IMessageTransmitter(cctpTransmitter_);
        token.approve(cctpMessenger_, type(uint256).max);
        stableTokensForGasScalingFactor = 10 ** (ORACLE_PRECISION - tokenDecimals + chainPrecision_);
        fromGasOracleScalingFactor = 10 ** (ORACLE_PRECISION - tokenDecimals);
    }

    /**
     * @notice Initiates a bridging process of the token to another blockchain.
     * @dev This function is used to initiate a cross-chain transfer.
     * The bridging fee required for the cross-chain transfer can be paid in two ways:
     * - by sending the required amount of native gas token along with the transaction
     *   (See `getTransactionCost` in the `GasUsage` contract).
     * - by setting the parameter `relayerFeeTokenAmount` with the amount of bridging fee in tokens
     *   (See the function `getBridgingCostInTokens`).
     * @param amount The amount of tokens to send (including `relayerFeeTokenAmount`).
     * @param recipient The recipient address.
     * @param destinationChainId The ID of the destination chain.
     * @param relayerFeeTokenAmount The amount of tokens to be deducted from the transferred amount as a bridging fee.
     */
    function bridge(
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        uint relayerFeeTokenAmount
    ) public payable {
        require(amount > relayerFeeTokenAmount, "CCTP: Amount <= relayer fee");
        require(recipient != 0, "CCTP: Recipient must be nonzero");
        token.safeTransferFrom(msg.sender, address(this), amount);
        uint gasFromStables = _getStableTokensValueInGas(relayerFeeTokenAmount);
        uint relayerFee = this.getTransactionCost(destinationChainId);
        require(msg.value + gasFromStables >= relayerFee, "CCTP: Not enough fee");
        uint amountToSend = amount - relayerFeeTokenAmount;
        uint adminFee;
        if (adminFeeShareBP != 0) {
            adminFee = (amountToSend * adminFeeShareBP) / BP;
            if (adminFee == 0) {
                adminFee = 1;
            }
            amountToSend -= adminFee;
        }
        uint maxFee = (amountToSend * maxFeeShare) / MAX_FEE_SHARE_P + 1;
        uint32 destinationDomain = getDomainByChainId(destinationChainId);
        cctpMessenger.depositForBurn(
            amountToSend,
            destinationDomain,
            recipient,
            address(token),
            bytes32(0),
            maxFee,
            minFinalityThreshold
        );
        emit TokensSent(
            msg.sender,
            recipient,
            amountToSend,
            destinationChainId,
            msg.value,
            gasFromStables,
            relayerFee,
            relayerFeeTokenAmount,
            adminFee,
            maxFee
        );
    }

    /**
     * @notice Public method to initiate a bridging process of the token to another blockchain. Used for recipients with different wallet address (Solana)
     * @dev See full description in the bridge method
     * @param recipientWalletAddress The recipient wallet address - used to track user for transfers to Solana.
     **/
    function bridgeWithWalletAddress(
        uint amount,
        bytes32 recipient,
        bytes32 recipientWalletAddress,
        uint destinationChainId,
        uint relayerFeeTokenAmount
    ) external payable {
        bridge(amount, recipient, destinationChainId, relayerFeeTokenAmount);

        emit TokensSentExtras(recipientWalletAddress);
    }

    /**
     * @notice Completes the bridging process by sending the tokens on the destination blockchain to the recipient.
     * @param recipient The recipient address.
     * @param messageId The message id to connect sent and received transaction (Sent tx id)
     * @param message The message information emitted by the CCTP contract `MessageTransmitter` on the source chain.
     * @param signature Concatenated 65-byte signature(s) of `message`.
     */
    function receiveTokens(
        address recipient,
        bytes32 messageId,
        bytes calldata message,
        bytes calldata signature
    ) external payable {
        require(cctpTransmitter.receiveMessage(message, signature), "CCTP: Receive message failed");
        // pass extra gas to the recipient
        if (msg.value > 0) {
            (bool sent, ) = payable(recipient).call{value: msg.value}("");
            if (sent) {
                emit ReceivedExtraGas(recipient, msg.value);
            }
        }

        emit ReceivedMessageId(messageId);
    }

    /**
     * @notice Allows the admin to add new supported chain destination.
     * @param chainId_ The chain ID of the destination to register.
     * @param domain The domain of the destination to register.
     */
    function registerBridgeDestination(uint chainId_, uint32 domain) external onlyOwner {
        chainIdDomainMap[chainId_] = domain + 1;
    }

    /**
     * @notice Allows the admin to remove a chain from the map of supported destinations.
     * @param chainId_ The chain ID of the destination to unregister.
     */
    function unregisterBridgeDestination(uint chainId_) external onlyOwner {
        chainIdDomainMap[chainId_] = 0;
    }

    /**
     * @notice Allows the admin to withdraw the relayer fee collected in gas tokens.
     */
    function withdrawGas(uint amount) external onlyOwner {
        payable(msg.sender).transfer(amount);
    }

    /**
     * @notice Allows the admin to withdraw the admin fee and relayer fee collected in tokens.
     */
    function withdrawFeeInTokens() external onlyOwner {
        uint toWithdraw = token.balanceOf(address(this));
        if (toWithdraw > 0) {
            token.safeTransfer(msg.sender, toWithdraw);
        }
    }

    /**
     * @notice Sets the basis points of the admin fee share from each bridge.
     */
    function setAdminFeeShare(uint adminFeeShareBP_) external onlyOwner {
        require(adminFeeShareBP_ <= BP, "CCTP: Too high");
        adminFeeShareBP = adminFeeShareBP_;
    }

    /**
     * @notice Sets the maximum fee share for the relayer.
     */
    function setMaxFeeShare(uint maxFeeShare_) external onlyOwner {
        require(maxFeeShare_ <= MAX_FEE_SHARE_P, "CCTP: Too high");
        maxFeeShare = maxFeeShare_;
    }

    /**
     * @notice Sets the minimum finality threshold for the relayer.
     */
    function setMinFinalityThreshold(uint32 minFinalityThreshold_) external onlyOwner {
        minFinalityThreshold = minFinalityThreshold_;
    }

    /**
     * @notice Calculates the amount of bridging fee nominated in the stable token.
     * @param destinationChainId The ID of the destination chain.
     * @return The total price of bridging, with the precision according to the token's `decimals()` value.
     */
    function getBridgingCostInTokens(uint destinationChainId) external view returns (uint) {
        return
            gasOracle.getTransactionGasCostInUSD(destinationChainId, gasUsage[destinationChainId]) /
            fromGasOracleScalingFactor;
    }

    function isMessageProcessed(bytes32 nonce) external view returns (bool) {
        return cctpTransmitter.usedNonces(nonce) != 0;
    }

    function getDomainByChainId(uint chainId_) public view returns (uint32) {
        uint domainNumber = chainIdDomainMap[chainId_];
        require(domainNumber > 0, "CCTP: Unknown chain id");
        return uint32(domainNumber - 1);
    }

    /**
     * @notice Calculates the amount of gas equivalent in value to provided amount of tokens
     * according to the current exchange rate.
     * @param stableTokenAmount The amount of tokens.
     * @return amount of gas tokens.
     */
    function _getStableTokensValueInGas(uint stableTokenAmount) internal view returns (uint) {
        if (stableTokenAmount == 0) return 0;
        return (stableTokensForGasScalingFactor * stableTokenAmount) / gasOracle.price(chainId);
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        emit ReceivedGas(msg.sender, msg.value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";

/**
 * @title GasOracle
 * @dev A contract that provides gas price and native token USD price data on other blockchains.
 */
contract GasOracle is Ownable, IGasOracle {
    struct ChainData {
        // price of the chain's native token in USD
        uint128 price;
        // price of a gas unit in the chain's native token with precision according to the const ORACLE_PRECISION
        uint128 gasPrice;
    }
    uint private constant ORACLE_PRECISION = 18;
    uint private constant ORACLE_SCALING_FACTOR = 10 ** ORACLE_PRECISION;
    // number to divide by to change precision from gas oracle price precision to chain precision
    uint private immutable fromOracleToChainScalingFactor;

    mapping(uint chainId => ChainData) public override chainData;
    // current chain ID
    uint public immutable override chainId;

    constructor(uint chainId_, uint chainPrecision) {
        chainId = chainId_;
        fromOracleToChainScalingFactor = 10 ** (ORACLE_PRECISION - chainPrecision);
    }

    /**
     * @notice Sets the chain data for a given chain ID.
     * @param chainId_ The ID of the given chain to set data for.
     * @param price_ The price of the given chain's native token in USD.
     * @param gasPrice The price of a gas unit in the given chain's native token (with precision according to the const
     * `ORACLE_PRECISION`).
     */
    function setChainData(uint chainId_, uint128 price_, uint128 gasPrice) external override onlyOwner {
        chainData[chainId_].price = price_;
        chainData[chainId_].gasPrice = gasPrice;
    }

    /**
     * @notice Sets only the price for a given chain ID.
     * @param chainId_ The ID of the given chain to set the price for.
     * @param price_ The price of the given chain's native token in USD.
     */
    function setPrice(uint chainId_, uint128 price_) external override onlyOwner {
        chainData[chainId_].price = price_;
    }

    /**
     * @notice Sets only the gas price for a given chain ID.
     * @param chainId_ The ID of the given chain to set the gas price for.
     * @param gasPrice The price of a gas unit in the given chain's native token (with precision according to the const
     * `ORACLE_PRECISION`).
     */
    function setGasPrice(uint chainId_, uint128 gasPrice) external override onlyOwner {
        chainData[chainId_].gasPrice = gasPrice;
    }

    /**
     * @notice Calculates the gas cost of a transaction on another chain in the current chain's native token.
     * @param otherChainId The ID of the chain for which to get the gas cost.
     * @param gasAmount The amount of gas used in a transaction.
     * @return The gas cost of a transaction in the current chain's native token
     */
    function getTransactionGasCostInNativeToken(
        uint otherChainId,
        uint gasAmount
    ) external view override returns (uint) {
        return
            (chainData[otherChainId].gasPrice * gasAmount * chainData[otherChainId].price) /
            chainData[chainId].price /
            fromOracleToChainScalingFactor;
    }

    /**
     * @notice Calculates the gas cost of a transaction on another chain in USD.
     * @param otherChainId The ID of the chain for which to get the gas cost.
     * @param gasAmount The amount of gas used in a transaction.
     * @return The gas cost of a transaction in USD with precision of `ORACLE_PRECISION`
     */
    function getTransactionGasCostInUSD(uint otherChainId, uint gasAmount) external view override returns (uint) {
        return (chainData[otherChainId].gasPrice * gasAmount * chainData[otherChainId].price) / ORACLE_SCALING_FACTOR;
    }

    /**
     * @notice Get the cross-rate between the two chains' native tokens.
     * @param otherChainId The ID of the other chain to get the cross-rate for.
     */
    function crossRate(uint otherChainId) external view override returns (uint) {
        return (chainData[otherChainId].price * ORACLE_SCALING_FACTOR) / chainData[chainId].price;
    }

    /**
     * @notice Get the price of a given chain's native token in USD.
     * @param chainId_ The ID of the given chain to get the price.
     * @return the price of the given chain's native token in USD with precision of const ORACLE_PRECISION
     */
    function price(uint chainId_) external view override returns (uint) {
        return chainData[chainId_].price;
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        revert("Unsupported");
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";

/**
 * @dev Contract module which allows children to store typical gas usage of a certain transaction on another chain.
 */
abstract contract GasUsage is Ownable {
    IGasOracle internal gasOracle;
    mapping(uint chainId => uint amount) public gasUsage;

    constructor(IGasOracle gasOracle_) {
        gasOracle = gasOracle_;
    }

    /**
     * @dev Sets the amount of gas used for a transaction on a given chain.
     * @param chainId The ID of the chain.
     * @param gasAmount The amount of gas used on the chain.
     */
    function setGasUsage(uint chainId, uint gasAmount) external onlyOwner {
        gasUsage[chainId] = gasAmount;
    }

    /**
     * @dev Sets the Gas Oracle contract address.
     * @param gasOracle_ The address of the Gas Oracle contract.
     */
    function setGasOracle(IGasOracle gasOracle_) external onlyOwner {
        gasOracle = gasOracle_;
    }

    /**
     * @notice Get the gas cost of a transaction on another chain in the current chain's native token.
     * @param chainId The ID of the chain for which to get the gas cost.
     * @return The calculated gas cost of the transaction in the current chain's native token
     */
    function getTransactionCost(uint chainId) external view returns (uint) {
        unchecked {
            return gasOracle.getTransactionGasCostInNativeToken(chainId, gasUsage[chainId]);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IReceiver} from "./IReceiver.sol";

interface IMessageTransmitter is IReceiver {
    function usedNonces(bytes32 _sourceAndNonce) external view returns (uint256);
}

// SPDX-License-Identifier: Apache-2.0
/*
 * Copyright (c) 2022, Circle Internet Financial Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
pragma solidity ^0.8.18;

/**
 * @title IReceiver
 * @notice Receives messages on destination chain and forwards them to IMessageDestinationHandler
 */
interface IReceiver {
    /**
     * @notice Receives an incoming message, validating the header and passing
     * the body to application-specific handler.
     * @param message The message raw bytes
     * @param signature The message signature
     * @return success bool, true if successful
     */
    function receiveMessage(bytes calldata message, bytes calldata signature) external returns (bool success);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

interface ITokenMessenger {
    /**
     * @notice Deposits and burns tokens from sender to be minted on destination domain.
     * Emits a `DepositForBurn` event.
     * @dev reverts if:
     * - given burnToken is not supported
     * - given destinationDomain has no TokenMessenger registered
     * - transferFrom() reverts. For example, if sender's burnToken balance or approved allowance
     * to this contract is less than `amount`.
     * - burn() reverts. For example, if `amount` is 0.
     * - MessageTransmitter returns false or reverts.
     * @param amount amount of tokens to burn
     * @param destinationDomain destination domain
     * @param mintRecipient address of mint recipient on destination domain
     * @param burnToken address of contract to burn deposited tokens, on local domain
     * @return _nonce unique nonce reserved by message
     */
    function depositForBurn(
        uint amount,
        uint32 destinationDomain,
        bytes32 mintRecipient,
        address burnToken
    ) external returns (uint64 _nonce);

    /**
     * @notice Replace a BurnMessage to change the mint recipient and/or
     * destination caller. Allows the sender of a previous BurnMessage
     * (created by depositForBurn or depositForBurnWithCaller)
     * to send a new BurnMessage to replace the original.
     * The new BurnMessage will reuse the amount and burn token of the original,
     * without requiring a new deposit.
     * @dev The new message will reuse the original message's nonce. For a
     * given nonce, all replacement message(s) and the original message are
     * valid to broadcast on the destination domain, until the first message
     * at the nonce confirms, at which point all others are invalidated.
     * Note: The msg.sender of the replaced message must be the same as the
     * msg.sender of the original message.
     * @param originalMessage original message bytes (to replace)
     * @param originalAttestation original attestation bytes
     * @param newDestinationCaller the new destination caller, which may be the
     * same as the original destination caller, a new destination caller, or an empty
     * destination caller (bytes32(0), indicating that any destination caller is valid.)
     * @param newMintRecipient the new mint recipient, which may be the same as the
     * original mint recipient, or different.
     */
    function replaceDepositForBurn(
        bytes calldata originalMessage,
        bytes calldata originalAttestation,
        bytes32 newDestinationCaller,
        bytes32 newMintRecipient
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

interface ITokenMessengerV2 {
    /**
     * @notice Deposits and burns tokens from sender to be minted on destination domain.
     * Emits a `DepositForBurn` event.
     * @dev reverts if:
     * - given burnToken is not supported
     * - given destinationDomain has no TokenMessenger registered
     * - transferFrom() reverts. For example, if sender's burnToken balance or approved allowance
     * to this contract is less than `amount`.
     * - burn() reverts. For example, if `amount` is 0.
     * - maxFee is greater than or equal to `amount`.
     * - MessageTransmitterV2#sendMessage reverts.
     * @param amount amount of tokens to burn
     * @param destinationDomain destination domain to receive message on
     * @param mintRecipient address of mint recipient on destination domain
     * @param burnToken token to burn `amount` of, on local domain
     * @param destinationCaller authorized caller on the destination domain, as bytes32. If equal to bytes32(0),
     * any address can broadcast the message.
     * @param maxFee maximum fee to pay on the destination domain, specified in units of burnToken
     * @param minFinalityThreshold the minimum finality at which a burn message will be attested to.
     */
    function depositForBurn(
        uint256 amount,
        uint32 destinationDomain,
        bytes32 mintRecipient,
        address burnToken,
        bytes32 destinationCaller,
        uint256 maxFee,
        uint32 minFinalityThreshold
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

enum MessengerProtocol {
    None,
    Allbridge,
    Wormhole,
    LayerZero
}

interface IBridge {
    function chainId() external view returns (uint);

    function processedMessages(bytes32) external view returns (uint);

    function sentMessages(bytes32) external view returns (uint);

    function otherBridges(uint) external view returns (bytes32);

    function otherBridgeTokens(uint, bytes32) external view returns (bool);

    function getBridgingCostInTokens(
        uint destinationChainId,
        MessengerProtocol messenger,
        address tokenAddress
    ) external view returns (uint);

    function hashMessage(
        uint amount,
        bytes32 recipient,
        uint sourceChainId,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger
    ) external pure returns (bytes32);

    function receiveTokens(
        uint amount,
        bytes32 recipient,
        uint sourceChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger,
        uint receiveAmountMin
    ) external payable;

    function withdrawGasTokens(uint amount) external;

    function registerBridge(uint chainId, bytes32 bridgeAddress) external;

    function addBridgeToken(uint chainId, bytes32 tokenAddress) external;

    function removeBridgeToken(uint chainId, bytes32 tokenAddress) external;

    function swapAndBridge(
        bytes32 token,
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger,
        uint feeTokenAmount
    ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

interface IGasOracle {
    function chainData(uint chainId) external view returns (uint128 price, uint128 gasPrice);

    function chainId() external view returns (uint);

    function crossRate(uint otherChainId) external view returns (uint);

    function getTransactionGasCostInNativeToken(uint otherChainId, uint256 gasAmount) external view returns (uint);

    function getTransactionGasCostInUSD(uint otherChainId, uint256 gasAmount) external view returns (uint);

    function price(uint chainId) external view returns (uint);

    function setChainData(uint chainId, uint128 price, uint128 gasPrice) external;

    function setGasPrice(uint chainId, uint128 gasPrice) external;

    function setPrice(uint chainId, uint128 price) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

interface IMessenger {
    function sentMessagesBlock(bytes32 message) external view returns (uint);

    function receivedMessages(bytes32 message) external view returns (uint);

    function sendMessage(bytes32 message) external payable;

    function receiveMessage(bytes32 message, uint v1v2, bytes32 r1, bytes32 s1, bytes32 r2, bytes32 s2) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {MessengerProtocol} from "./IBridge.sol";

interface IRouter {
    function canSwap() external view returns (uint8);

    function swap(uint amount, bytes32 token, bytes32 receiveToken, address recipient, uint receiveAmountMin) external;
}

// contracts/Messages.sol
// SPDX-License-Identifier: Apache 2
pragma solidity ^0.8.18;

interface Structs {
    struct Provider {
        uint16 chainId;
        uint16 governanceChainId;
        bytes32 governanceContract;
    }

    struct GuardianSet {
        address[] keys;
        uint32 expirationTime;
    }

    struct Signature {
        bytes32 r;
        bytes32 s;
        uint8 v;
        uint8 guardianIndex;
    }

    struct VM {
        uint8 version;
        uint32 timestamp;
        uint32 nonce;
        uint16 emitterChainId;
        bytes32 emitterAddress;
        uint64 sequence;
        uint8 consistencyLevel;
        bytes payload;
        uint32 guardianSetIndex;
        Signature[] signatures;
        bytes32 hash;
    }
}

interface IWormhole is Structs {
    event LogMessagePublished(
        address indexed sender,
        uint64 sequence,
        uint32 nonce,
        bytes payload,
        uint8 consistencyLevel
    );

    function publishMessage(
        uint32 nonce,
        bytes memory payload,
        uint8 consistencyLevel
    ) external payable returns (uint64 sequence);

    function parseAndVerifyVM(
        bytes calldata encodedVM
    ) external view returns (Structs.VM memory vm, bool valid, string memory reason);

    function verifyVM(Structs.VM memory vm) external view returns (bool valid, string memory reason);

    function verifySignatures(
        bytes32 hash,
        Structs.Signature[] memory signatures,
        Structs.GuardianSet memory guardianSet
    ) external pure returns (bool valid, string memory reason);

    function parseVM(bytes memory encodedVM) external pure returns (Structs.VM memory vm);

    function getGuardianSet(uint32 index) external view returns (Structs.GuardianSet memory);

    function getCurrentGuardianSetIndex() external view returns (uint32);

    function getGuardianSetExpiry() external view returns (uint32);

    function governanceActionIsConsumed(bytes32 hash) external view returns (bool);

    function isInitialized(address impl) external view returns (bool);

    function chainId() external view returns (uint16);

    function governanceChainId() external view returns (uint16);

    function governanceContract() external view returns (bytes32);

    function messageFee() external view returns (uint);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

library HashUtils {
    function replaceChainBytes(
        bytes32 data,
        uint8 sourceChainId,
        uint8 destinationChainId
    ) internal pure returns (bytes32 result) {
        assembly {
            mstore(0x00, data)
            mstore8(0x00, sourceChainId)
            mstore8(0x01, destinationChainId)
            result := mload(0x0)
        }
    }

    function hashWithSender(bytes32 message, bytes32 sender) internal pure returns (bytes32 result) {
        assembly {
            mstore(0x00, message)
            mstore(0x20, sender)
            result := or(
                and(
                    message,
                    0xffff000000000000000000000000000000000000000000000000000000000000 // First 2 bytes
                ),
                and(
                    keccak256(0x00, 0x40),
                    0x0000ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff // Last 30 bytes
                )
            )
        }
    }

    function hashWithSenderAddress(bytes32 message, address sender) internal pure returns (bytes32 result) {
        assembly {
            mstore(0x00, message)
            mstore(0x20, sender)
            result := or(
                and(
                    message,
                    0xffff000000000000000000000000000000000000000000000000000000000000 // First 2 bytes
                ),
                and(
                    keccak256(0x00, 0x40),
                    0x0000ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff // Last 30 bytes
                )
            )
        }
    }

    function hashed(bytes32 message) internal pure returns (bytes32 result) {
        assembly {
            mstore(0x00, message)
            result := keccak256(0x00, 0x20)
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {IMessenger} from "./interfaces/IMessenger.sol";
import {GasUsage} from "./GasUsage.sol";
import {HashUtils} from "./libraries/HashUtils.sol";

/**
 * @dev This contract implements the Allbridge messenger cross-chain communication protocol.
 */
contract Messenger is Ownable, GasUsage, IMessenger {
    using HashUtils for bytes32;
    // current chain ID
    uint public immutable chainId;
    // supported destination chain IDs
    bytes32 public otherChainIds;

    // the primary account that is responsible for validation that a message has been sent on the source chain
    address private primaryValidator;
    // the secondary accounts that are responsible for validation that a message has been sent on the source chain
    mapping(address => bool) private secondaryValidators;
    mapping(bytes32 messageHash => uint blockNumber) public override sentMessagesBlock;
    mapping(bytes32 messageHash => uint isReceived) public override receivedMessages;

    event MessageSent(bytes32 indexed message);
    event MessageReceived(bytes32 indexed message);

    /**
     * @dev Emitted when the contract receives native gas tokens (e.g. Ether on the Ethereum network).
     */
    event Received(address, uint);

    /**
     * @dev Emitted when the mapping of secondary validators is updated.
     */
    event SecondaryValidatorsSet(address[] oldValidators, address[] newValidators);

    constructor(
        uint chainId_,
        bytes32 otherChainIds_,
        IGasOracle gasOracle_,
        address primaryValidator_,
        address[] memory validators
    ) GasUsage(gasOracle_) {
        chainId = chainId_;
        otherChainIds = otherChainIds_;
        primaryValidator = primaryValidator_;

        uint length = validators.length;
        for (uint index; index < length; ) {
            secondaryValidators[validators[index]] = true;
            unchecked {
                index++;
            }
        }
    }

    /**
     * @notice Sends a message to another chain.
     * @dev Emits a {MessageSent} event, which signals to the off-chain messaging service to invoke the `receiveMessage`
     * function on the destination chain to deliver the message.
     *
     * Requirements:
     *
     * - the first byte of the message must be the current chain ID.
     * - the second byte of the message must be the destination chain ID.
     * - the same message cannot be sent second time.
     * - messaging fee must be payed. (See `getTransactionCost` of the `GasUsage` contract).
     * @param message The message to be sent to the destination chain.
     */
    function sendMessage(bytes32 message) external payable override {
        require(uint8(message[0]) == chainId, "Messenger: wrong chainId");
        require(otherChainIds[uint8(message[1])] != 0, "Messenger: wrong destination");

        bytes32 messageWithSender = message.hashWithSenderAddress(msg.sender);

        require(sentMessagesBlock[messageWithSender] == 0, "Messenger: has message");
        sentMessagesBlock[messageWithSender] = block.number;

        require(msg.value >= this.getTransactionCost(uint8(message[1])), "Messenger: not enough fee");

        emit MessageSent(messageWithSender);
    }

    /**
     * @notice Delivers a message to the destination chain.
     * @dev Emits an {MessageReceived} event indicating the message has been delivered.
     *
     * Requirements:
     *
     * - a valid signature of the primary validator.
     * - a valid signature of one of the secondary validators.
     * - the second byte of the message must be the current chain ID.
     */
    function receiveMessage(
        bytes32 message,
        uint v1v2,
        bytes32 r1,
        bytes32 s1,
        bytes32 r2,
        bytes32 s2
    ) external override {
        bytes32 hashedMessage = message.hashed();
        require(ecrecover(hashedMessage, uint8(v1v2 >> 8), r1, s1) == primaryValidator, "Messenger: invalid primary");
        require(secondaryValidators[ecrecover(hashedMessage, uint8(v1v2), r2, s2)], "Messenger: invalid secondary");

        require(uint8(message[1]) == chainId, "Messenger: wrong chainId");

        receivedMessages[message] = 1;

        emit MessageReceived(message);
    }

    /**
     * @dev Allows the admin to withdraw the messaging fee collected in native gas tokens.
     */
    function withdrawGasTokens(uint amount) external onlyOwner {
        payable(msg.sender).transfer(amount);
    }

    /**
     * @dev Allows the admin to set the primary validator address.
     */
    function setPrimaryValidator(address value) external onlyOwner {
        primaryValidator = value;
    }

    /**
     * @dev Allows the admin to set the addresses of secondary validators.
     */
    function setSecondaryValidators(address[] memory oldValidators, address[] memory newValidators) external onlyOwner {
        uint length = oldValidators.length;
        uint index;
        for (; index < length; ) {
            secondaryValidators[oldValidators[index]] = false;
            unchecked {
                index++;
            }
        }
        length = newValidators.length;
        index = 0;
        for (; index < length; ) {
            secondaryValidators[newValidators[index]] = true;
            unchecked {
                index++;
            }
        }
        emit SecondaryValidatorsSet(oldValidators, newValidators);
    }

    /**
     * @dev Allows the admin to update a list of supported destination chain IDs
     * @param value Each byte of the `value` parameter represents whether a chain ID with such index is supported
     *              as a valid message destination.
     */
    function setOtherChainIds(bytes32 value) external onlyOwner {
        otherChainIds = value;
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        emit Received(msg.sender, msg.value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {Messenger} from "./Messenger.sol";
import {MessengerProtocol} from "./interfaces/IBridge.sol";
import {WormholeMessenger} from "./WormholeMessenger.sol";

/**
 * @dev This abstract contract provides functions for cross-chain communication and supports different messaging
 *      protocols.
 */
abstract contract MessengerGateway is Ownable {
    Messenger private allbridgeMessenger;
    WormholeMessenger private wormholeMessenger;

    constructor(Messenger allbridgeMessenger_, WormholeMessenger wormholeMessenger_) {
        allbridgeMessenger = allbridgeMessenger_;
        wormholeMessenger = wormholeMessenger_;
    }

    /**
     * @dev Sets the Allbridge Messenger contract address.
     * @param allbridgeMessenger_ The address of the Messenger contract.
     */
    function setAllbridgeMessenger(Messenger allbridgeMessenger_) external onlyOwner {
        allbridgeMessenger = allbridgeMessenger_;
    }

    /**
     * @dev Sets the Wormhole Messenger contract address.
     * @param wormholeMessenger_ The address of the WormholeMessenger contract.
     */
    function setWormholeMessenger(WormholeMessenger wormholeMessenger_) external onlyOwner {
        wormholeMessenger = wormholeMessenger_;
    }

    /**
     * @notice Get the gas cost of a messaging transaction on another chain in the current chain's native token.
     * @param chainId The ID of the chain where to send the message.
     * @param protocol The messenger used to send the message.
     * @return The calculated gas cost of the messaging transaction in the current chain's native token.
     */
    function getMessageCost(uint chainId, MessengerProtocol protocol) external view returns (uint) {
        if (protocol == MessengerProtocol.Allbridge) {
            return allbridgeMessenger.getTransactionCost(chainId);
        } else if (protocol == MessengerProtocol.Wormhole) {
            return wormholeMessenger.getTransactionCost(chainId);
        }
        return 0;
    }

    /**
     * @notice Get the amount of gas a messaging transaction uses on a given chain.
     * @param chainId The ID of the chain where to send the message.
     * @param protocol The messenger used to send the message.
     * @return The amount of gas a messaging transaction uses.
     */
    function getMessageGasUsage(uint chainId, MessengerProtocol protocol) public view returns (uint) {
        if (protocol == MessengerProtocol.Allbridge) {
            return allbridgeMessenger.gasUsage(chainId);
        } else if (protocol == MessengerProtocol.Wormhole) {
            return wormholeMessenger.gasUsage(chainId);
        }
        return 0;
    }

    /**
     * @notice Checks whether a given message has been received via the specified messenger protocol.
     * @param message The message to check.
     * @param protocol The messenger used to send the message.
     * @return A boolean indicating whether the message has been received.
     */
    function hasReceivedMessage(bytes32 message, MessengerProtocol protocol) external view returns (bool) {
        if (protocol == MessengerProtocol.Allbridge) {
            return allbridgeMessenger.receivedMessages(message) != 0;
        } else if (protocol == MessengerProtocol.Wormhole) {
            return wormholeMessenger.receivedMessages(message) != 0;
        } else {
            revert("Not implemented");
        }
    }

    /**
     * @notice Checks whether a given message has been sent.
     * @param message The message to check.
     * @return A boolean indicating whether the message has been sent.
     */
    function hasSentMessage(bytes32 message) external view returns (bool) {
        return allbridgeMessenger.sentMessagesBlock(message) != 0 || wormholeMessenger.sentMessages(message) != 0;
    }

    function _sendMessage(bytes32 message, MessengerProtocol protocol) internal returns (uint messageCost) {
        if (protocol == MessengerProtocol.Allbridge) {
            messageCost = allbridgeMessenger.getTransactionCost(uint8(message[1]));
            allbridgeMessenger.sendMessage{value: messageCost}(message);
        } else if (protocol == MessengerProtocol.Wormhole) {
            messageCost = wormholeMessenger.getTransactionCost(uint8(message[1]));
            wormholeMessenger.sendMessage{value: messageCost}(message);
        } else {
            revert("Not implemented");
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {OptionsBuilder} from "@layerzerolabs/oapp-evm/contracts/oapp/libs/OptionsBuilder.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {SendParam, IOFT, MessagingFee} from "@layerzerolabs/oft-evm/contracts/interfaces/IOFT.sol";

/**
 * @title OftBridge
 * @notice A proxy contract for handling cross-chain token transfers using LayerZero's Omnichain Fungible Token (OFT) standard.
 * @dev Incorporates OpenZeppelin and LayerZero libraries for safe token handling and cross-chain messaging.
 */
contract OftBridge is Ownable {
    using SafeERC20 for IERC20;
    using OptionsBuilder for bytes;

    // Constants
    uint internal constant ORACLE_PRECISION = 18; // Decimals for gas cost calculations
    uint internal constant BP = 1e4;             // Basis points denominator (1 basis point = 0.01%)
    uint private immutable chainPrecision;       // Current chain precision

    // State variables
    IGasOracle internal gasOracle;               // Gas price oracle for pricing gas in token terms
    uint public immutable chainId;               // Chain ID of the current blockchain
    mapping(address tokenAddress => uint feeShare) public adminFeeShareBP;    // Admin's fee share per token (bps)

    // Mappings for managing token addresses and chain configurations
    mapping(address tokenAddress => uint scalingFactor) internal stableTokensForGasScalingFactor;               // Scaling factor for token-to-gas conversion
    mapping(uint chainId => uint32 eid) private chainIdEidMap;                                                  // Map from chain ID to LayerZero Endpoint ID
    mapping(uint chainId => uint maxExtraGas) internal maxExtraGas;                                             // Maximum allowed extra gas for each chain
    mapping(uint chainId => uint128 gasLimit) internal lzGasLimit;                                              // LayerZero-specific gas limit for cross-chain transactions
    mapping(address tokenAddress => mapping(uint destinationChainId => address oftAddress)) public oftAddress;  // Map from token to its OFT contract address depending on destination ChainId

    /**
     * @dev Event emitted when the contract receives some gas directly.
     * @param sender The address of the sender.
     * @param amount The amount of gas received.
     */
    event ReceivedGas(address sender, uint amount);

    /**
     * @dev Event emitted when tokens are sent to a destination chain.
     */
    event OftTokensSent(
        address sender,
        bytes32 recipient,
        address tokenAddress,
        uint amount,
        uint destinationChainId,
        uint receivedRelayerFeeFromGas,
        uint receivedRelayerFeeFromTokens,
        uint relayerFeeWithExtraGas,
        uint receivedRelayerFeeTokenAmount,
        uint adminFeeTokenAmount,
        uint extraGasDestinationToken
    );

    /**
     * @notice Constructor to initialize the OftBridge.
     * @param chainId_ The chain ID of the current blockchain.
     * @param gasOracle_ The address of the gas oracle contract.
     */
    constructor(
        uint chainId_,
        uint chainPrecision_,
        IGasOracle gasOracle_
    ) {
        chainId = chainId_;
        gasOracle = gasOracle_;
        chainPrecision = chainPrecision_;
    }

    /**
     * @notice Bridges tokens to a destination chain.
     * @param tokenAddress The token address to send.
     * @param amount The amount of tokens to bridge.
     * @param recipient The recipient address on the destination chain (as bytes32).
     * @param destinationChainId The ID of the destination chain.
     * @param relayerFeeTokenAmount The portion of the fee in tokens.
     * @param extraGasInDestinationToken Additional gas for execution on the destination chain.
     * @param slippageBP The acceptable slippage in basis points.
     */
    function bridge(
        address tokenAddress,
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        uint relayerFeeTokenAmount,
        uint extraGasInDestinationToken,
        uint slippageBP
    ) public payable {
        // Validate input parameters
        require(amount > relayerFeeTokenAmount, "Amount <= relayer fee");
        require(recipient != 0, "Recipient must be nonzero");
        require(slippageBP <= BP, "Too high slippage");
        // Retrieve the oft address associated with the token
        address oft = oftAddress[tokenAddress][destinationChainId];
        require(oft != address(0), "Token is not registered for the destination");

        IERC20(tokenAddress).safeTransferFrom(msg.sender, address(this), amount);

        // Ensure extra gas is within the allowed limit
        require(maxExtraGas[destinationChainId] == 0 || extraGasInDestinationToken <= maxExtraGas[destinationChainId], "Extra gas too high");

        // Initialize LayerZero options for the transaction
        bytes memory options = OptionsBuilder.newOptions();
        if (lzGasLimit[destinationChainId] > 0) {
            options = options.addExecutorLzReceiveOption(lzGasLimit[destinationChainId], 0);
        }
        if (extraGasInDestinationToken > 0) {
            options = options.addExecutorNativeDropOption(uint128(extraGasInDestinationToken), recipient);
        }

        // Calculate the amount to send after deducting fees
        uint amountToSend = amount - relayerFeeTokenAmount;
        uint adminFee;
        if (adminFeeShareBP[tokenAddress] != 0) {
            adminFee = (amountToSend * adminFeeShareBP[tokenAddress]) / BP;
            if (adminFee == 0) {
                adminFee = 1;
            }
            amountToSend -= adminFee;
        }

        // Prepare the LayerZero `SendParam` with messaging options and slippage
        SendParam memory sendParam = SendParam(
            getEidByChainId(destinationChainId),
            recipient,
            amountToSend,
            amountToSend - (amountToSend * slippageBP / BP), // Minimum amount (after slippage)
            options,
            "",
            ""
        );

        // Retrieve the messaging fee from the LayerZero protocol
        MessagingFee memory messagingFee = IOFT(oft).quoteSend(sendParam, false);

        // Calculate the gas equivalent of stable tokens for the relayer fee
        uint gasFromStables = _getStableTokensValueInGas(tokenAddress, relayerFeeTokenAmount);
        require(msg.value + gasFromStables >= messagingFee.nativeFee, "Not enough fee");

        // Send the transaction through the OFT protocol
        require(address(this).balance >= messagingFee.nativeFee, "Insufficient contract balance");
        IOFT(oft).send{value: messagingFee.nativeFee}(sendParam, messagingFee, msg.sender);

        // Emit an event for tracking the token bridge
        emit OftTokensSent(
            msg.sender,
            recipient,
            tokenAddress,
            amountToSend,
            destinationChainId,
            msg.value,
            gasFromStables,
            messagingFee.nativeFee,
            relayerFeeTokenAmount,
            adminFee,
            extraGasInDestinationToken
        );
    }

    /**
    * @notice Registers a new destination chain for bridging operations.
     * @param chainId_ The chain ID of the destination chain.
     * @param eid_ The LayerZero endpoint ID for the destination chain.
     * @param lzGasLimit_ The gas limit for LayerZero operations on the destination chain.
     */
    function registerBridgeDestination(uint chainId_, uint32 eid_, uint128 lzGasLimit_) external onlyOwner {
        chainIdEidMap[chainId_] = eid_;
        lzGasLimit[chainId_] = lzGasLimit_;
    }

    /**
     * @notice Allows the admin to remove a chain from the map of supported destinations.
     * @param chainId_ The chain ID of the destination to unregister.
     */
    function unregisterBridgeDestination(uint chainId_) external onlyOwner {
        chainIdEidMap[chainId_] = 0;
        lzGasLimit[chainId_] = 0;
    }

    /**
     * @notice Adds a new token to the bridge with its corresponding OFT contract for specific destination
     * @param oft_ The address of the OFT contract for the token.
     * @param destinationChainId_ The ID of the destination chain.
     */
    function addToken(address oft_, uint destinationChainId_) external onlyOwner {
        address tokenAddress = IOFT(oft_).token();
        uint tokenDecimals = IERC20Metadata(tokenAddress).decimals();
        IERC20(tokenAddress).forceApprove(oft_, type(uint256).max);
        stableTokensForGasScalingFactor[tokenAddress] = 10 ** (ORACLE_PRECISION - tokenDecimals + chainPrecision);
        oftAddress[tokenAddress][destinationChainId_] = oft_;
    }

    /**
     * @notice Removes a token from the bridge for specific destination.
     * @param oft_ The address of the OFT contract to remove.
     * @param destinationChainId_ The ID of the destination chain.
     */
    function removeToken(address oft_, uint destinationChainId_) external onlyOwner {
        address tokenAddress = IOFT(oft_).token();
        oftAddress[tokenAddress][destinationChainId_] = address(0);
    }

    /**
     * @notice Removes a token allowance from oft contract and scaling factor
     * @param oft_ The address of the OFT contract to remove.
     */
    function removeTokenAllowanceAndScalingFactor(address oft_) external onlyOwner {
        address tokenAddress = IOFT(oft_).token();
        stableTokensForGasScalingFactor[tokenAddress] = 0;
        IERC20(tokenAddress).forceApprove(oft_, 0);
    }

    /**
     * @notice Retrieves the relayer fee required for a specific chain.
     * @param tokenAddress_ The address of the token.
     * @param destinationChainId_ The ID of the destination chain.
     * @return The required fee in native gas tokens.
     */
    function relayerFee(address tokenAddress_, uint destinationChainId_) external view returns (uint) {
        address oft = oftAddress[tokenAddress_][destinationChainId_];
        require(oft != address(0), "Token is not registered for the destination");
        MessagingFee memory messagingFee = IOFT(oft).quoteSend(_createEmptySendParam(destinationChainId_, 0), false);
        return messagingFee.nativeFee;
    }

    /**
     * @notice Calculates the price of additional gas on the destination chain.
     * @param tokenAddress_ The address of the token.
     * @param destinationChainId_ The ID of the destination chain.
     * @param extraGasAmount_ The extra gas amount for the destination chain.
     * @return The price of the additional gas in native tokens.
     */
    function extraGasPrice(address tokenAddress_, uint destinationChainId_, uint128 extraGasAmount_) external view returns (uint) {
        address oft = oftAddress[tokenAddress_][destinationChainId_];
        require(oft != address(0), "Token is not registered for the destination");
        MessagingFee memory messagingFee1 = IOFT(oft).quoteSend(_createEmptySendParam(destinationChainId_, extraGasAmount_), false);
        MessagingFee memory messagingFee2 = IOFT(oft).quoteSend(_createEmptySendParam(destinationChainId_, extraGasAmount_ * 2), false);
        return messagingFee2.nativeFee - messagingFee1.nativeFee;
    }

    /**
     * @notice Allows the admin to withdraw the relayer fee collected in gas tokens.
     * @param amount_ The amount of gas tokens to withdraw.
     * @dev Only callable by the contract owner. Transfers the specified amount of native tokens
     * from the contract to the owner's address.
     */
    function withdrawGas(uint amount_) external onlyOwner {
        payable(msg.sender).transfer(amount_);
    }

    /**
     * @notice Allows the admin to withdraw the admin fee and relayer fee collected in tokens.
     * @param token_ The ERC20 token contract address from which to withdraw fees.
     * @dev Only callable by the contract owner. Transfers all available tokens
     * of the specified type from the contract to the owner's address.
     */
    function withdrawFeeInTokens(IERC20 token_) external onlyOwner {
        uint toWithdraw = token_.balanceOf(address(this));
        if (toWithdraw > 0) {
            token_.safeTransfer(msg.sender, toWithdraw);
        }
    }

    /**
     * @notice Sets the basis points of the admin fee share from each bridge.
     * @param tokenAddress_ The address of the token for which to set the admin fee share.
     * @param adminFeeShareBP_ The percentage of the fee in basis points (1 BP = 0.01%) to be allocated to admin.
     * @dev Only callable by the contract owner.
     * The value must be less than or equal to the BP constant (10000).
     * This fee is deducted from the token amount before bridging.
     */
    function setAdminFeeShare(address tokenAddress_, uint adminFeeShareBP_) external onlyOwner {
        require(adminFeeShareBP_ <= BP, "Too high");
        adminFeeShareBP[tokenAddress_] = adminFeeShareBP_;
    }

    /**
     * @notice Sets the maximum extra gas allowed for a specific chain.
     * @param chainId_ The chain ID to set the limit for.
     * @param maxExtraGas_ The maximum amount of extra gas allowed.
     */
    function setMaxExtraGas(uint chainId_, uint maxExtraGas_) external onlyOwner {
        maxExtraGas[chainId_] = maxExtraGas_;
    }

    /**
     * @notice Sets the LayerZero gas limit for a specific chain.
     * @param chainId_ The chain ID to set the limit for.
     * @param lzGasLimit_ The gas limit for LayerZero operations.
     */
    function setLzGasLimit(uint chainId_, uint128 lzGasLimit_) external onlyOwner {
        lzGasLimit[chainId_] = lzGasLimit_;
    }

    /**
     * @notice Gets the LayerZero endpoint ID for a given chain ID.
     * @param chainId_ The chain ID to lookup.
     * @return The corresponding LayerZero endpoint ID.
     */
    function getEidByChainId(uint chainId_) public view returns (uint32) {
        uint32 domainNumber = chainIdEidMap[chainId_];
        require(domainNumber > 0, "Unknown chain id");
        return domainNumber;
    }

    /**
     * @notice Creates an empty SendParam structure for fee estimation.
     * @dev Used internally to create a basic SendParam with minimal values for gas calculations.
     * @param destinationChainId_ The ID of the destination chain.
     * @param extraGasDestinationToken_ Additional gas amount for the destination chain execution.
     * @return SendParam A LayerZero SendParam structure with basic configuration.
     */
    function _createEmptySendParam(
        uint destinationChainId_, uint128 extraGasDestinationToken_
    ) private view returns (SendParam memory) {
        bytes memory options = OptionsBuilder.newOptions();
        if (lzGasLimit[destinationChainId_] > 0) {
            options = options.addExecutorLzReceiveOption(lzGasLimit[destinationChainId_], 0);
        }
        if (extraGasDestinationToken_ > 0) {
            options = options.addExecutorNativeDropOption(extraGasDestinationToken_, bytes32(0));
        }
        return SendParam(
            getEidByChainId(destinationChainId_),
            bytes32(0),
            0,
            0,
            options,
            "",
            ""
        );
    }

    /**
     * @notice Calculates the amount of gas equivalent in value to provided amount of tokens
     * according to the current exchange rate.
     * @param tokenAddress_ The address of the token.
     * @param stableTokenAmount_ The amount of tokens.
     * @return amount of gas tokens.
     */
    function _getStableTokensValueInGas(address tokenAddress_, uint stableTokenAmount_) internal view returns (uint) {
        require(stableTokensForGasScalingFactor[tokenAddress_] > 0, "Token is not set");
        if (stableTokenAmount_ == 0) return 0;
        return (stableTokensForGasScalingFactor[tokenAddress_] * stableTokenAmount_) / gasOracle.price(chainId);
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        emit ReceivedGas(msg.sender, msg.value);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

contract RewardManager is Ownable, ERC20 {
    using SafeERC20 for ERC20;
    uint private constant P = 52;
    uint internal constant BP = 1e4;

    // Accumulated rewards per share, shifted left by P bits
    uint public accRewardPerShareP;

    // Reward token
    ERC20 public immutable token;
    // Info of each user reward debt
    mapping(address user => uint amount) public userRewardDebt;

    // Admin fee share (in basis points)
    uint public adminFeeShareBP;
    // Unclaimed admin fee amount
    uint public adminFeeAmount;

    event Deposit(address indexed user, uint amount);
    event Withdraw(address indexed user, uint amount);
    event RewardsClaimed(address indexed user, uint amount);

    constructor(ERC20 token_, string memory lpName, string memory lpSymbol) ERC20(lpName, lpSymbol) {
        token = token_;
        // Default admin fee is 20%
        adminFeeShareBP = BP / 5;
    }

    /**
     * @notice Claims pending rewards for the current staker without updating the stake balance.
     */
    function claimRewards() external {
        uint userLpAmount = balanceOf(msg.sender);
        if (userLpAmount > 0) {
            uint rewards = (userLpAmount * accRewardPerShareP) >> P;
            uint pending = rewards - userRewardDebt[msg.sender];
            if (pending > 0) {
                userRewardDebt[msg.sender] = rewards;
                token.safeTransfer(msg.sender, pending);
                emit RewardsClaimed(msg.sender, pending);
            }
        }
    }

    /**
     * @notice Sets the basis points of the admin fee share from rewards.
     */
    function setAdminFeeShare(uint adminFeeShareBP_) external onlyOwner {
        require(adminFeeShareBP_ <= BP, "RewardManager: too high");
        adminFeeShareBP = adminFeeShareBP_;
    }

    /**
     * @notice Allows the admin to claim the collected admin fee.
     */
    function claimAdminFee() external onlyOwner {
        if (adminFeeAmount > 0) {
            token.safeTransfer(msg.sender, adminFeeAmount);
            adminFeeAmount = 0;
        }
    }

    /**
     * @notice Returns pending rewards for the staker.
     * @param user The address of the staker.
     */
    function pendingReward(address user) external view returns (uint) {
        return ((balanceOf(user) * accRewardPerShareP) >> P) - userRewardDebt[user];
    }

    /**
     * @dev Returns the number of decimals used to get user representation of LP tokens.
     */
    function decimals() public pure override returns (uint8) {
        return 3;
    }

    /**
     * @dev Adds reward to the pool, splits admin fee share and updates the accumulated rewards per share.
     */
    function _addRewards(uint rewardAmount) internal {
        if (totalSupply() > 0) {
            uint adminFeeRewards = (rewardAmount * adminFeeShareBP) / BP;
            unchecked {
                rewardAmount -= adminFeeRewards;
            }
            accRewardPerShareP += (rewardAmount << P) / totalSupply();
            adminFeeAmount += adminFeeRewards;
        }
    }

    /**
     * @dev Deposits LP amount for the user, updates user reward debt and pays pending rewards.
     */
    function _depositLp(address to, uint lpAmount) internal {
        uint pending;
        uint userLpAmount = balanceOf(to); // Gas optimization
        if (userLpAmount > 0) {
            pending = ((userLpAmount * accRewardPerShareP) >> P) - userRewardDebt[to];
        }
        userLpAmount += lpAmount;
        _mint(to, lpAmount);
        userRewardDebt[to] = (userLpAmount * accRewardPerShareP) >> P;
        if (pending > 0) {
            token.safeTransfer(to, pending);
            emit RewardsClaimed(to, pending);
        }
        emit Deposit(to, lpAmount);
    }

    /**
     * @dev Withdraws LP amount for the user, updates user reward debt and pays out pending rewards.
     */
    function _withdrawLp(address from, uint lpAmount) internal {
        uint userLpAmount = balanceOf(from); // Gas optimization
        require(userLpAmount >= lpAmount, "RewardManager: not enough amount");
        uint pending;
        if (userLpAmount > 0) {
            pending = ((userLpAmount * accRewardPerShareP) >> P) - userRewardDebt[from];
        }
        userLpAmount -= lpAmount;
        _burn(from, lpAmount);
        userRewardDebt[from] = (userLpAmount * accRewardPerShareP) >> P;
        if (pending > 0) {
            token.safeTransfer(from, pending);
            emit RewardsClaimed(from, pending);
        }
        emit Withdraw(from, lpAmount);
    }

    function _transfer(address, address, uint) internal pure override {
        revert("Unsupported");
    }

    function _approve(address, address, uint) internal pure override {
        revert("Unsupported");
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IRouter} from "./interfaces/IRouter.sol";
import {MessengerProtocol} from "./interfaces/IBridge.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Pool} from "./Pool.sol";

abstract contract Router is Ownable, IRouter {
    using SafeERC20 for ERC20;
    uint private immutable chainPrecision;
    uint internal constant ORACLE_PRECISION = 18;

    mapping(bytes32 tokenId => Pool) public pools;
    // precomputed values to divide by to change the precision from the Gas Oracle precision to the token precision
    mapping(address tokenAddress => uint scalingFactor) internal fromGasOracleScalingFactor;
    // precomputed values of the scaling factor required for paying the bridging fee with stable tokens
    mapping(address tokenAddress => uint scalingFactor) internal bridgingFeeConversionScalingFactor;

    // can restrict swap operations
    address private stopAuthority;

    /**
     * @dev The rebalancer is an account responsible for balancing the liquidity pools. It ensures that the pool is
     * balanced by executing zero-fee swaps when the pool is imbalanced.
     *
     * Gas optimization: both the 'rebalancer' and 'canSwap' fields are used in the 'swap' and 'swapAndBridge'
     * functions and can occupy the same slot.
     */
    address private rebalancer;
    uint8 public override canSwap = 1;

    /**
     * @dev Emitted during the on-chain swap of tokens.
     */
    event Swapped(
        address sender,
        address recipient,
        bytes32 sendToken,
        bytes32 receiveToken,
        uint sendAmount,
        uint receiveAmount
    );

    constructor(uint chainPrecision_) {
        chainPrecision = chainPrecision_;
        stopAuthority = owner();
    }

    /**
     * @dev Modifier to make a function callable only when the swap is allowed.
     */
    modifier whenCanSwap() {
        require(canSwap == 1, "Router: swap prohibited");
        _;
    }

    /**
     * @dev Throws if called by any account other than the stopAuthority.
     */
    modifier onlyStopAuthority() {
        require(stopAuthority == msg.sender, "Router: is not stopAuthority");
        _;
    }

    /**
     * @notice Swaps a given pair of tokens on the same blockchain.
     * @param amount The amount of tokens to be swapped.
     * @param token The token to be swapped.
     * @param receiveToken The token to receive in exchange for the swapped token.
     * @param recipient The address to receive the tokens.
     * @param receiveAmountMin The minimum amount of tokens required to receive during the swap.
     */
    function swap(
        uint amount,
        bytes32 token,
        bytes32 receiveToken,
        address recipient,
        uint receiveAmountMin
    ) external override whenCanSwap {
        uint vUsdAmount = _sendAndSwapToVUsd(token, msg.sender, amount);
        uint receivedAmount = _receiveAndSwapFromVUsd(receiveToken, recipient, vUsdAmount, receiveAmountMin);
        emit Swapped(msg.sender, recipient, token, receiveToken, amount, receivedAmount);
    }

    /**
     * @notice Allows the admin to add new supported liquidity pools.
     * @dev Adds the address of the `Pool` contract to the list of supported liquidity pools.
     * @param pool The address of the `Pool` contract.
     * @param token The address of the token in the liquidity pool.
     */
    function addPool(Pool pool, bytes32 token) external onlyOwner {
        pools[token] = pool;
        address tokenAddress = address(uint160(uint(token)));
        uint tokenDecimals = ERC20(tokenAddress).decimals();
        bridgingFeeConversionScalingFactor[tokenAddress] = 10 ** (ORACLE_PRECISION - tokenDecimals + chainPrecision);
        fromGasOracleScalingFactor[tokenAddress] = 10 ** (ORACLE_PRECISION - tokenDecimals);
    }

    /**
     * @dev Switches off the possibility to make swaps.
     */
    function stopSwap() external onlyStopAuthority {
        canSwap = 0;
    }

    /**
     * @dev Switches on the possibility to make swaps.
     */
    function startSwap() external onlyOwner {
        canSwap = 1;
    }

    /**
     * @dev Allows the admin to set the address of the stopAuthority.
     */
    function setStopAuthority(address stopAuthority_) external onlyOwner {
        stopAuthority = stopAuthority_;
    }

    /**
     * @dev Allows the admin to set the address of the rebalancer.
     */
    function setRebalancer(address rebalancer_) external onlyOwner {
        rebalancer = rebalancer_;
    }

    function _receiveAndSwapFromVUsd(
        bytes32 token,
        address recipient,
        uint vUsdAmount,
        uint receiveAmountMin
    ) internal returns (uint) {
        Pool tokenPool = pools[token];
        require(address(tokenPool) != address(0), "Router: no receive pool");
        return tokenPool.swapFromVUsd(recipient, vUsdAmount, receiveAmountMin, recipient == rebalancer);
    }

    function _sendAndSwapToVUsd(bytes32 token, address user, uint amount) internal virtual returns (uint) {
        Pool pool = pools[token];
        require(address(pool) != address(0), "Router: no pool");
        ERC20(address(uint160(uint(token)))).safeTransferFrom(user, address(pool), amount);
        return pool.swapToVUsd(user, amount, user == rebalancer);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.4.22 <0.9.0;

library console {
    address constant CONSOLE_ADDRESS = address(0x000000000000000000636F6e736F6c652e6c6f67);

    function _sendLogPayload(bytes memory payload) private view {
        uint payloadLength = payload.length;
        address consoleAddress = CONSOLE_ADDRESS;
        assembly {
            let payloadStart := add(payload, 32)
            let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0)
        }
    }

    function log() internal view {
        _sendLogPayload(abi.encodeWithSignature("log()"));
    }

    function logInt(int p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(int)", p0));
    }

    function logUint(uint p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint)", p0));
    }

    function logString(string memory p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string)", p0));
    }

    function logBool(bool p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool)", p0));
    }

    function logAddress(address p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address)", p0));
    }

    function logBytes(bytes memory p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes)", p0));
    }

    function logBytes1(bytes1 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes1)", p0));
    }

    function logBytes2(bytes2 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes2)", p0));
    }

    function logBytes3(bytes3 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes3)", p0));
    }

    function logBytes4(bytes4 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes4)", p0));
    }

    function logBytes5(bytes5 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes5)", p0));
    }

    function logBytes6(bytes6 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes6)", p0));
    }

    function logBytes7(bytes7 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes7)", p0));
    }

    function logBytes8(bytes8 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes8)", p0));
    }

    function logBytes9(bytes9 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes9)", p0));
    }

    function logBytes10(bytes10 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes10)", p0));
    }

    function logBytes11(bytes11 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes11)", p0));
    }

    function logBytes12(bytes12 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes12)", p0));
    }

    function logBytes13(bytes13 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes13)", p0));
    }

    function logBytes14(bytes14 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes14)", p0));
    }

    function logBytes15(bytes15 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes15)", p0));
    }

    function logBytes16(bytes16 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes16)", p0));
    }

    function logBytes17(bytes17 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes17)", p0));
    }

    function logBytes18(bytes18 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes18)", p0));
    }

    function logBytes19(bytes19 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes19)", p0));
    }

    function logBytes20(bytes20 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes20)", p0));
    }

    function logBytes21(bytes21 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes21)", p0));
    }

    function logBytes22(bytes22 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes22)", p0));
    }

    function logBytes23(bytes23 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes23)", p0));
    }

    function logBytes24(bytes24 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes24)", p0));
    }

    function logBytes25(bytes25 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes25)", p0));
    }

    function logBytes26(bytes26 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes26)", p0));
    }

    function logBytes27(bytes27 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes27)", p0));
    }

    function logBytes28(bytes28 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes28)", p0));
    }

    function logBytes29(bytes29 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes29)", p0));
    }

    function logBytes30(bytes30 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes30)", p0));
    }

    function logBytes31(bytes31 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes31)", p0));
    }

    function logBytes32(bytes32 p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bytes32)", p0));
    }

    function log(uint p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint)", p0));
    }

    function log(string memory p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string)", p0));
    }

    function log(bool p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool)", p0));
    }

    function log(address p0) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address)", p0));
    }

    function log(uint p0, uint p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint)", p0, p1));
    }

    function log(uint p0, string memory p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string)", p0, p1));
    }

    function log(uint p0, bool p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool)", p0, p1));
    }

    function log(uint p0, address p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address)", p0, p1));
    }

    function log(string memory p0, uint p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint)", p0, p1));
    }

    function log(string memory p0, string memory p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string)", p0, p1));
    }

    function log(string memory p0, bool p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool)", p0, p1));
    }

    function log(string memory p0, address p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address)", p0, p1));
    }

    function log(bool p0, uint p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint)", p0, p1));
    }

    function log(bool p0, string memory p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string)", p0, p1));
    }

    function log(bool p0, bool p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool)", p0, p1));
    }

    function log(bool p0, address p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address)", p0, p1));
    }

    function log(address p0, uint p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint)", p0, p1));
    }

    function log(address p0, string memory p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string)", p0, p1));
    }

    function log(address p0, bool p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool)", p0, p1));
    }

    function log(address p0, address p1) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address)", p0, p1));
    }

    function log(uint p0, uint p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2));
    }

    function log(uint p0, uint p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2));
    }

    function log(uint p0, uint p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2));
    }

    function log(uint p0, uint p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2));
    }

    function log(uint p0, string memory p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2));
    }

    function log(uint p0, string memory p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2));
    }

    function log(uint p0, string memory p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2));
    }

    function log(uint p0, string memory p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2));
    }

    function log(uint p0, bool p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2));
    }

    function log(uint p0, bool p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2));
    }

    function log(uint p0, bool p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2));
    }

    function log(uint p0, bool p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2));
    }

    function log(uint p0, address p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2));
    }

    function log(uint p0, address p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2));
    }

    function log(uint p0, address p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2));
    }

    function log(uint p0, address p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2));
    }

    function log(string memory p0, uint p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2));
    }

    function log(string memory p0, uint p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2));
    }

    function log(string memory p0, uint p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2));
    }

    function log(string memory p0, uint p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2));
    }

    function log(string memory p0, string memory p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2));
    }

    function log(string memory p0, string memory p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2));
    }

    function log(string memory p0, string memory p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2));
    }

    function log(string memory p0, string memory p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2));
    }

    function log(string memory p0, bool p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2));
    }

    function log(string memory p0, bool p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2));
    }

    function log(string memory p0, bool p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2));
    }

    function log(string memory p0, bool p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2));
    }

    function log(string memory p0, address p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2));
    }

    function log(string memory p0, address p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2));
    }

    function log(string memory p0, address p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2));
    }

    function log(string memory p0, address p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2));
    }

    function log(bool p0, uint p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2));
    }

    function log(bool p0, uint p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2));
    }

    function log(bool p0, uint p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2));
    }

    function log(bool p0, uint p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2));
    }

    function log(bool p0, string memory p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2));
    }

    function log(bool p0, string memory p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2));
    }

    function log(bool p0, string memory p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2));
    }

    function log(bool p0, string memory p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2));
    }

    function log(bool p0, bool p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2));
    }

    function log(bool p0, bool p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2));
    }

    function log(bool p0, bool p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2));
    }

    function log(bool p0, bool p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2));
    }

    function log(bool p0, address p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2));
    }

    function log(bool p0, address p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2));
    }

    function log(bool p0, address p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2));
    }

    function log(bool p0, address p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2));
    }

    function log(address p0, uint p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2));
    }

    function log(address p0, uint p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2));
    }

    function log(address p0, uint p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2));
    }

    function log(address p0, uint p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2));
    }

    function log(address p0, string memory p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2));
    }

    function log(address p0, string memory p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2));
    }

    function log(address p0, string memory p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2));
    }

    function log(address p0, string memory p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2));
    }

    function log(address p0, bool p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2));
    }

    function log(address p0, bool p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2));
    }

    function log(address p0, bool p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2));
    }

    function log(address p0, bool p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2));
    }

    function log(address p0, address p1, uint p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2));
    }

    function log(address p0, address p1, string memory p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2));
    }

    function log(address p0, address p1, bool p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2));
    }

    function log(address p0, address p1, address p2) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2));
    }

    function log(uint p0, uint p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, uint p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, string memory p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, bool p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3));
    }

    function log(uint p0, address p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, uint p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, string memory p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, bool p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3));
    }

    function log(string memory p0, address p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, uint p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, string memory p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, bool p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3));
    }

    function log(bool p0, address p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3));
    }

    function log(address p0, uint p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3));
    }

    function log(address p0, string memory p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3));
    }

    function log(address p0, bool p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, uint p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, uint p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, uint p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, uint p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, string memory p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, string memory p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, string memory p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, string memory p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, bool p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, bool p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, bool p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, bool p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, address p2, uint p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, address p2, string memory p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, address p2, bool p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3));
    }

    function log(address p0, address p1, address p2, address p3) internal view {
        _sendLogPayload(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3));
    }
}

// SPDX-License-Identifier: MIT
contract MockERC20 {
    string public name;
    string public symbol;
    uint8 public decimals;
    uint public totalSupply;
    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

    constructor(string memory _name, string memory _symbol, uint8 _decimals) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;
    }

    function mint(address to, uint amount) external {
        balanceOf[to] += amount;
        totalSupply += amount;
    }

    function approve(address spender, uint amount) external returns (bool) {
        allowance[msg.sender][spender] = amount;
        return true;
    }

    function transfer(address to, uint amount) external returns (bool) {
        require(balanceOf[msg.sender] >= amount, "Insufficient balance");
        balanceOf[msg.sender] -= amount;
        balanceOf[to] += amount;
        return true;
    }

    function transferFrom(address from, address to, uint amount) external returns (bool) {
        require(balanceOf[from] >= amount, "Insufficient balance");
        require(allowance[from][msg.sender] >= amount, "Insufficient allowance");
        balanceOf[from] -= amount;
        balanceOf[to] += amount;
        allowance[from][msg.sender] -= amount;
        return true;
    }
}

// SPDX-License-Identifier: MIT
contract MockGasOracle {
    mapping(uint => uint) public prices;

    function price(uint chainId) external view returns (uint) {
        return prices[chainId];
    }

    function setPrice(uint chainId, uint _price) external {
        prices[chainId] = _price;
    }
}

import {UlnOptions} from "@layerzerolabs/lz-evm-messagelib-v2/contracts/uln/libs/UlnOptions.sol";
import {ExecutorOptions} from "@layerzerolabs/lz-evm-messagelib-v2/contracts/libs/ExecutorOptions.sol";
import {MockERC20} from "./MockERC20.sol";
import {SendParam, MessagingFee, MessagingReceipt, OFTReceipt} from "@layerzerolabs/oft-evm/contracts/interfaces/IOFT.sol";

// SPDX-License-Identifier: MIT
contract MockOFT {
    using ExecutorOptions for bytes;
    address public token;
    uint public defaultNativeFee = 10000000000000000;

    constructor(address _token) {
        token = _token;
    }

    function setDefaultNativeFee(uint fee) external {
        defaultNativeFee = fee;
    }

    function quoteSend(SendParam calldata sendParam, bool payInLzToken) external view returns (MessagingFee memory) {
        // Calculate fee based on options - in real implementation this would parse the options 
        uint fee = defaultNativeFee;
        bytes calldata _options = sendParam.extraOptions[2:];

        uint256 cursor = 0;
        while (cursor < _options.length) {
            (uint8 optionType, bytes calldata option, uint256 newCursor) = _options.nextExecutorOption(cursor);
            cursor = newCursor;
            if (optionType == ExecutorOptions.OPTION_TYPE_NATIVE_DROP) {
                (uint128 nativeDropAmount, ) = ExecutorOptions.decodeNativeDropOption(option);
                fee += nativeDropAmount;
            }
        }

        return MessagingFee({
            nativeFee: fee,
            lzTokenFee: 0
        });
    }

    function send(
        SendParam calldata sendParam,
        MessagingFee calldata fee,
        address refundAddress
    ) external payable returns (MessagingReceipt memory, OFTReceipt memory) {
        require(msg.value >= fee.nativeFee, "Not enough native token for fee");

        // Simulate the token transfer
        MockERC20(token).transferFrom(msg.sender, address(this), sendParam.amountLD);
        return (MessagingReceipt(bytes32(0), 0, MessagingFee(0, 0)), OFTReceipt(0, 0));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IBridge, MessengerProtocol} from "../interfaces/IBridge.sol";
import {Router} from "../Router.sol";

contract TestBridgeForSwap is IBridge, Router {
    uint public chainId;
    mapping(bytes32 messageHash => uint isProcessed) public override processedMessages;
    mapping(bytes32 messageHash => uint isSent) public override sentMessages;
    // Info about bridges on other chains
    mapping(uint chainId => bytes32 bridgeAddress) public override otherBridges;
    // Info about tokens on other chains
    mapping(uint chainId => mapping(bytes32 tokenAddress => bool isSupported)) public override otherBridgeTokens;

    event vUsdSent(uint amount);

    constructor() Router(18) {}

    function swapAndBridge(
        bytes32 token,
        uint amount,
        bytes32 recipient,
        uint destinationChainId,
        bytes32 receiveToken,
        uint nonce,
        MessengerProtocol messenger,
        uint feeTokenAmount
    ) external payable override {}

    function receiveTokens(
        uint amount,
        bytes32,
        uint,
        bytes32 receiveToken,
        uint,
        MessengerProtocol,
        uint receiveAmountMin
    ) external payable override {}

    function withdrawGasTokens(uint amount) external override onlyOwner {}

    function registerBridge(uint chainId_, bytes32 bridgeAddress_) external override onlyOwner {}

    function addBridgeToken(uint chainId_, bytes32 tokenAddress_) external override onlyOwner {}

    function removeBridgeToken(uint chainId_, bytes32 tokenAddress_) external override onlyOwner {}

    function getBridgingCostInTokens(uint, MessengerProtocol, address) external pure override returns (uint) {
        return 0;
    }

    function hashMessage(
        uint,
        bytes32,
        uint,
        uint,
        bytes32,
        uint,
        MessengerProtocol
    ) external pure override returns (bytes32) {
        return 0;
    }

    function _sendAndSwapToVUsd(bytes32 token, address user, uint amount) internal override returns (uint) {
        uint vUsdAmount = super._sendAndSwapToVUsd(token, user, amount);
        emit vUsdSent(vUsdAmount);
        return vUsdAmount;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {IMessenger} from "../interfaces/IMessenger.sol";

contract TestMessenger is IMessenger {
    bool public isHasMessage = false;

    event Sent();

    function sentMessagesBlock(bytes32) external view override returns (uint) {
        return isHasMessage ? 1 : 0;
    }

    function receivedMessages(bytes32) external view override returns (uint) {
        return isHasMessage ? 1 : 0;
    }

    function sendMessage(bytes32) external payable override {
        emit Sent();
    }

    function receiveMessage(
        bytes32 message,
        uint v1v2,
        bytes32 r1,
        bytes32 s1,
        bytes32 r2,
        bytes32 s2
    ) external override {
        // Do nothing
    }

    function getTransactionCost(uint) external pure returns (uint) {
        return 1000;
    }

    function setIsHasMessage(bool isHasMessage_) external {
        isHasMessage = isHasMessage_;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {Pool} from "../Pool.sol";
import {RewardManager} from "../RewardManager.sol";

contract TestPool is Pool {
    constructor(
        address router_,
        uint a_,
        ERC20 token_,
        uint16 feeShareBP_,
        uint balanceRatioMinBP_
    ) Pool(router_, a_, token_, feeShareBP_, balanceRatioMinBP_, "LP", "LP") {}

    function setVUsdBalance(uint vUsdBalance_) public {
        vUsdBalance = vUsdBalance_;
    }

    function setTokenBalance(uint tokenBalance_) public {
        tokenBalance = tokenBalance_;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {RewardManager} from "../RewardManager.sol";

contract TestPoolForRewards is RewardManager {
    // solhint-disable-next-line no-empty-blocks
    constructor(ERC20 token) RewardManager(token, "LP", "LP") {}

    function deposit(uint amount) external {
        _depositLp(msg.sender, amount);
    }

    function withdraw(uint amount) external {
        _withdrawLp(msg.sender, amount);
    }

    function addRewards(uint amount) external {
        _addRewards(amount);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract Token is ERC20 {
    uint8 internal _decimals;

    constructor(string memory _name, string memory _symbol, uint _amount, uint8 __decimals) ERC20(_name, _symbol) {
        _mint(msg.sender, _amount);
        _decimals = __decimals;
    }

    function decimals() public view virtual override returns (uint8) {
        return _decimals;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IGasOracle} from "./interfaces/IGasOracle.sol";
import {IMessenger} from "./interfaces/IMessenger.sol";
import {IWormhole} from "./interfaces/IWormhole.sol";
import {GasUsage} from "./GasUsage.sol";
import {GasOracle} from "./GasOracle.sol";
import {HashUtils} from "./libraries/HashUtils.sol";

contract WormholeMessenger is Ownable, GasUsage {
    using HashUtils for bytes32;

    IWormhole private immutable wormhole;
    uint public immutable chainId;
    bytes32 public otherChainIds;

    uint32 private nonce;
    uint8 private commitmentLevel;

    mapping(uint16 chainId => bytes32 wormholeMessengerAddress) private otherWormholeMessengers;

    mapping(bytes32 messageHash => uint isReceived) public receivedMessages;
    mapping(bytes32 messageHash => uint isSent) public sentMessages;

    event MessageSent(bytes32 indexed message, uint64 sequence);
    event MessageReceived(bytes32 indexed message, uint64 sequence);
    event Received(address, uint);

    constructor(
        uint chainId_,
        bytes32 otherChainIds_,
        IWormhole wormhole_,
        uint8 commitmentLevel_,
        IGasOracle gasOracle_
    ) GasUsage(gasOracle_) {
        chainId = chainId_;
        otherChainIds = otherChainIds_;
        wormhole = wormhole_;
        commitmentLevel = commitmentLevel_;
    }

    function sendMessage(bytes32 message) external payable {
        require(uint8(message[0]) == chainId, "WormholeMessenger: wrong chainId");
        require(otherChainIds[uint8(message[1])] != 0, "Messenger: wrong destination");
        bytes32 messageWithSender = message.hashWithSenderAddress(msg.sender);

        uint32 nonce_ = nonce;

        uint256 wormholeFee = wormhole.messageFee();
        uint64 sequence = wormhole.publishMessage{value: wormholeFee}(
            nonce_,
            abi.encodePacked(messageWithSender),
            commitmentLevel
        );

        unchecked {
            nonce = nonce_ + 1;
        }

        require(sentMessages[messageWithSender] == 0, "WormholeMessenger: has message");
        sentMessages[messageWithSender] = 1;

        emit MessageSent(messageWithSender, sequence);
    }

    function receiveMessage(bytes memory encodedMsg) external {
        (IWormhole.VM memory vm, bool valid, string memory reason) = wormhole.parseAndVerifyVM(encodedMsg);

        require(valid, reason);
        require(vm.payload.length == 32, "WormholeMessenger: wrong length");

        bytes32 messageWithSender = bytes32(vm.payload);
        require(uint8(messageWithSender[1]) == chainId, "WormholeMessenger: wrong chainId");

        require(otherWormholeMessengers[vm.emitterChainId] == vm.emitterAddress, "WormholeMessenger: wrong emitter");

        receivedMessages[messageWithSender] = 1;

        emit MessageReceived(messageWithSender, vm.sequence);
    }

    function setCommitmentLevel(uint8 value) external onlyOwner {
        commitmentLevel = value;
    }

    function setOtherChainIds(bytes32 value) external onlyOwner {
        otherChainIds = value;
    }

    function registerWormholeMessenger(uint16 chainId_, bytes32 address_) external onlyOwner {
        otherWormholeMessengers[chainId_] = address_;
    }

    function withdrawGasTokens(uint amount) external onlyOwner {
        payable(msg.sender).transfer(amount);
    }

    fallback() external payable {
        revert("Unsupported");
    }

    receive() external payable {
        emit Received(msg.sender, msg.value);
    }
}

// SPDX-License-Identifier: Unlicense
/*
 * @title Solidity Bytes Arrays Utils
 * @author Gonçalo Sá <[email protected]>
 *
 * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 */
pragma solidity >=0.8.0 <0.9.0;


library BytesLib {
    function concat(
        bytes memory _preBytes,
        bytes memory _postBytes
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes memory tempBytes;

        assembly {
            // Get a location of some free memory and store it in tempBytes as
            // Solidity does for memory variables.
            tempBytes := mload(0x40)

            // Store the length of the first bytes array at the beginning of
            // the memory for tempBytes.
            let length := mload(_preBytes)
            mstore(tempBytes, length)

            // Maintain a memory counter for the current write location in the
            // temp bytes array by adding the 32 bytes for the array length to
            // the starting location.
            let mc := add(tempBytes, 0x20)
            // Stop copying when the memory counter reaches the length of the
            // first bytes array.
            let end := add(mc, length)

            for {
                // Initialize a copy counter to the start of the _preBytes data,
                // 32 bytes into its memory.
                let cc := add(_preBytes, 0x20)
            } lt(mc, end) {
                // Increase both counters by 32 bytes each iteration.
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                // Write the _preBytes data into the tempBytes memory 32 bytes
                // at a time.
                mstore(mc, mload(cc))
            }

            // Add the length of _postBytes to the current length of tempBytes
            // and store it as the new length in the first 32 bytes of the
            // tempBytes memory.
            length := mload(_postBytes)
            mstore(tempBytes, add(length, mload(tempBytes)))

            // Move the memory counter back from a multiple of 0x20 to the
            // actual end of the _preBytes data.
            mc := end
            // Stop copying when the memory counter reaches the new combined
            // length of the arrays.
            end := add(mc, length)

            for {
                let cc := add(_postBytes, 0x20)
            } lt(mc, end) {
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                mstore(mc, mload(cc))
            }

            // Update the free-memory pointer by padding our last write location
            // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
            // next 32 byte block, then round down to the nearest multiple of
            // 32. If the sum of the length of the two arrays is zero then add
            // one before rounding down to leave a blank 32 bytes (the length block with 0).
            mstore(0x40, and(
              add(add(end, iszero(add(length, mload(_preBytes)))), 31),
              not(31) // Round down to the nearest 32 bytes.
            ))
        }

        return tempBytes;
    }

    function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal {
        assembly {
            // Read the first 32 bytes of _preBytes storage, which is the length
            // of the array. (We don't need to use the offset into the slot
            // because arrays use the entire slot.)
            let fslot := sload(_preBytes.slot)
            // Arrays of 31 bytes or less have an even value in their slot,
            // while longer arrays have an odd value. The actual length is
            // the slot divided by two for odd values, and the lowest order
            // byte divided by two for even values.
            // If the slot is even, bitwise and the slot with 255 and divide by
            // two to get the length. If the slot is odd, bitwise and the slot
            // with -1 and divide by two.
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)
            let newlength := add(slength, mlength)
            // slength can contain both the length and contents of the array
            // if length < 32 bytes so let's prepare for that
            // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
            switch add(lt(slength, 32), lt(newlength, 32))
            case 2 {
                // Since the new array still fits in the slot, we just need to
                // update the contents of the slot.
                // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length
                sstore(
                    _preBytes.slot,
                    // all the modifications to the slot are inside this
                    // next block
                    add(
                        // we can just add to the slot contents because the
                        // bytes we want to change are the LSBs
                        fslot,
                        add(
                            mul(
                                div(
                                    // load the bytes from memory
                                    mload(add(_postBytes, 0x20)),
                                    // zero all bytes to the right
                                    exp(0x100, sub(32, mlength))
                                ),
                                // and now shift left the number of bytes to
                                // leave space for the length in the slot
                                exp(0x100, sub(32, newlength))
                            ),
                            // increase length by the double of the memory
                            // bytes length
                            mul(mlength, 2)
                        )
                    )
                )
            }
            case 1 {
                // The stored value fits in the slot, but the combined value
                // will exceed it.
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // The contents of the _postBytes array start 32 bytes into
                // the structure. Our first read should obtain the `submod`
                // bytes that can fit into the unused space in the last word
                // of the stored array. To get this, we read 32 bytes starting
                // from `submod`, so the data we read overlaps with the array
                // contents by `submod` bytes. Masking the lowest-order
                // `submod` bytes allows us to add that value directly to the
                // stored value.

                let submod := sub(32, slength)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(
                    sc,
                    add(
                        and(
                            fslot,
                            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00
                        ),
                        and(mload(mc), mask)
                    )
                )

                for {
                    mc := add(mc, 0x20)
                    sc := add(sc, 1)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
            default {
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                // Start copying to the last used word of the stored array.
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // Copy over the first `submod` bytes of the new data as in
                // case 1 above.
                let slengthmod := mod(slength, 32)
                let mlengthmod := mod(mlength, 32)
                let submod := sub(32, slengthmod)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(sc, add(sload(sc), and(mload(mc), mask)))

                for {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
        }
    }

    function slice(
        bytes memory _bytes,
        uint256 _start,
        uint256 _length
    )
        internal
        pure
        returns (bytes memory)
    {
        require(_length + 31 >= _length, "slice_overflow");
        require(_bytes.length >= _start + _length, "slice_outOfBounds");

        bytes memory tempBytes;

        assembly {
            switch iszero(_length)
            case 0 {
                // Get a location of some free memory and store it in tempBytes as
                // Solidity does for memory variables.
                tempBytes := mload(0x40)

                // The first word of the slice result is potentially a partial
                // word read from the original array. To read it, we calculate
                // the length of that partial word and start copying that many
                // bytes into the array. The first word we copy will start with
                // data we don't care about, but the last `lengthmod` bytes will
                // land at the beginning of the contents of the new array. When
                // we're done copying, we overwrite the full first word with
                // the actual length of the slice.
                let lengthmod := and(_length, 31)

                // The multiplication in the next line is necessary
                // because when slicing multiples of 32 bytes (lengthmod == 0)
                // the following copy loop was copying the origin's length
                // and then ending prematurely not copying everything it should.
                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))
                let end := add(mc, _length)

                for {
                    // The multiplication in the next line has the same exact purpose
                    // as the one above.
                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)
                } lt(mc, end) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    mstore(mc, mload(cc))
                }

                mstore(tempBytes, _length)

                //update free-memory pointer
                //allocating the array padded to 32 bytes like the compiler does now
                mstore(0x40, and(add(mc, 31), not(31)))
            }
            //if we want a zero-length slice let's just return a zero-length array
            default {
                tempBytes := mload(0x40)
                //zero out the 32 bytes slice we are about to return
                //we need to do it because Solidity does not garbage collect
                mstore(tempBytes, 0)

                mstore(0x40, add(tempBytes, 0x20))
            }
        }

        return tempBytes;
    }

    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= _start + 20, "toAddress_outOfBounds");
        address tempAddress;

        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }

        return tempAddress;
    }

    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {
        require(_bytes.length >= _start + 1 , "toUint8_outOfBounds");
        uint8 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x1), _start))
        }

        return tempUint;
    }

    function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {
        require(_bytes.length >= _start + 2, "toUint16_outOfBounds");
        uint16 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x2), _start))
        }

        return tempUint;
    }

    function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {
        require(_bytes.length >= _start + 4, "toUint32_outOfBounds");
        uint32 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x4), _start))
        }

        return tempUint;
    }

    function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {
        require(_bytes.length >= _start + 8, "toUint64_outOfBounds");
        uint64 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x8), _start))
        }

        return tempUint;
    }

    function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {
        require(_bytes.length >= _start + 12, "toUint96_outOfBounds");
        uint96 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0xc), _start))
        }

        return tempUint;
    }

    function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {
        require(_bytes.length >= _start + 16, "toUint128_outOfBounds");
        uint128 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x10), _start))
        }

        return tempUint;
    }

    function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
        require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
        uint256 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }

        return tempUint;
    }

    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
        require(_bytes.length >= _start + 32, "toBytes32_outOfBounds");
        bytes32 tempBytes32;

        assembly {
            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
        }

        return tempBytes32;
    }

    function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {
        bool success = true;

        assembly {
            let length := mload(_preBytes)

            // if lengths don't match the arrays are not equal
            switch eq(length, mload(_postBytes))
            case 1 {
                // cb is a circuit breaker in the for loop since there's
                //  no said feature for inline assembly loops
                // cb = 1 - don't breaker
                // cb = 0 - break
                let cb := 1

                let mc := add(_preBytes, 0x20)
                let end := add(mc, length)

                for {
                    let cc := add(_postBytes, 0x20)
                // the next line is the loop condition:
                // while(uint256(mc < end) + cb == 2)
                } eq(add(lt(mc, end), cb), 2) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    // if any of these checks fails then arrays are not equal
                    if iszero(eq(mload(mc), mload(cc))) {
                        // unsuccess:
                        success := 0
                        cb := 0
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }

    function equalStorage(
        bytes storage _preBytes,
        bytes memory _postBytes
    )
        internal
        view
        returns (bool)
    {
        bool success = true;

        assembly {
            // we know _preBytes_offset is 0
            let fslot := sload(_preBytes.slot)
            // Decode the length of the stored array like in concatStorage().
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)

            // if lengths don't match the arrays are not equal
            switch eq(slength, mlength)
            case 1 {
                // slength can contain both the length and contents of the array
                // if length < 32 bytes so let's prepare for that
                // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
                if iszero(iszero(slength)) {
                    switch lt(slength, 32)
                    case 1 {
                        // blank the last byte which is the length
                        fslot := mul(div(fslot, 0x100), 0x100)

                        if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) {
                            // unsuccess:
                            success := 0
                        }
                    }
                    default {
                        // cb is a circuit breaker in the for loop since there's
                        //  no said feature for inline assembly loops
                        // cb = 1 - don't breaker
                        // cb = 0 - break
                        let cb := 1

                        // get the keccak hash to get the contents of the array
                        mstore(0x0, _preBytes.slot)
                        let sc := keccak256(0x0, 0x20)

                        let mc := add(_postBytes, 0x20)
                        let end := add(mc, mlength)

                        // the next line is the loop condition:
                        // while(uint256(mc < end) + cb == 2)
                        for {} eq(add(lt(mc, end), cb), 2) {
                            sc := add(sc, 1)
                            mc := add(mc, 0x20)
                        } {
                            if iszero(eq(sload(sc), mload(mc))) {
                                // unsuccess:
                                success := 0
                                cb := 0
                            }
                        }
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 1000,
    "details": {
      "yulDetails": {
        "optimizerSteps": "u"
      }
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"router_","type":"address"},{"internalType":"uint256","name":"a_","type":"uint256"},{"internalType":"contract ERC20","name":"token_","type":"address"},{"internalType":"uint16","name":"feeShareBP_","type":"uint16"},{"internalType":"uint256","name":"balanceRatioMinBP_","type":"uint256"},{"internalType":"string","name":"lpName","type":"string"},{"internalType":"string","name":"lpSymbol","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RewardsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"vUsdAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"SwappedFromVUsd","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"vUsdAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"SwappedToVUsd","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"a","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"accRewardPerShareP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"adjustTotalLpAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"adminFeeAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"adminFeeShareBP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"balanceRatioMinBP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"canDeposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"canWithdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimAdminFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"d","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeShareBP","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"x","type":"uint256"}],"name":"getY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"pendingReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"reserves","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"router","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"adminFeeShareBP_","type":"uint256"}],"name":"setAdminFeeShare","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"balanceRatioMinBP_","type":"uint256"}],"name":"setBalanceRatioMinBP","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"feeShareBP_","type":"uint16"}],"name":"setFeeShare","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"router_","type":"address"}],"name":"setRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"stopAuthority_","type":"address"}],"name":"setStopAuthority","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startDeposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stopDeposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stopWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"receiveAmountMin","type":"uint256"},{"internalType":"bool","name":"zeroFee","type":"bool"}],"name":"swapFromVUsd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bool","name":"zeroFee","type":"bool"}],"name":"swapToVUsd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract ERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"userRewardDebt","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vUsdBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountLp","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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