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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.7;

import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";

import { IDeBridgeGateExtended as IDeBridgeGate } from "@debridge-finance/debridge-protocol-evm-interfaces/contracts/interfaces/IDeBridgeGateExtended.sol";

import "./interfaces/ICrossChainForwarder.sol";
import { IDlnDestination } from "./interfaces/IDlnDestination.sol";
import "./libraries/SignatureUtil.sol";
import "./libraries/Permit.sol";
import "./ForwarderBase.sol";

contract CrosschainForwarder is ForwarderBase, ICrossChainForwarder {
    using SafeERC20Upgradeable for IERC20Upgradeable;
    using SignatureUtil for bytes;

    address public constant NATIVE_TOKEN = address(0);

    IDeBridgeGate public deBridgeGate;

    mapping(address => bool) public supportedRouters;

    /* ========== Events ========== */

    event SupportedRouter(address srcSwapRouter, bool isSupported);
    event SwapExecuted(
        address router,
        address tokenIn,
        uint amountIn,
        address tokenOut,
        uint amountOut
    );

    event Refund(
        address token,
        uint256 amount,
        address recipient
    );

    /* ========== ERRORS ========== */

    // swap router didn't put target tokens on this (forwarder's) address
    error SwapEmptyResult(address srcTokenOut);

    error SwapFailed(address srcRouter);

    error NotEnoughSrcFundsIn(uint256 amount);
    error NotSupportedRouter();
    error CallFailed(address target, bytes data);
    error CallCausedBalanceDiscrepancy(address target, address token, uint expectedBalance, uint actualBalance);

    /* ========== STRUCTS ========== */

    struct SwapDetails {
        /// @dev address of a router to call to swap token
        address swapRouter;
        /// @dev calldata for the router
        bytes swapCalldata;

        /// @dev address of an outcome token of a swap described in swapCalladata
        address tokenOut;

        /// @dev expected outcome of a swap
        uint tokenOutExpectedAmount;

        /// @dev remainder of swap outcome (which lefts after subtracting tokenOutExpectedAmount and tokenOutMaxExcessiveAmount
        ///         from the swap outcome)
        address tokenOutRefundRecipient;
    }

    /* ========== INITIALIZERS ========== */

    function initialize(IDeBridgeGate _deBridgeGate) external initializer {
        ForwarderBase.initializeBase();
        deBridgeGate = _deBridgeGate;
    }

    /* ========== PUBLIC METHODS ========== */

    function sendV2(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,
        GateParams memory _gateParams
    ) external payable override {
        _obtainSrcTokenIn(_srcTokenIn, _srcAmountIn, _srcTokenInPermitEnvelope);
        _sendToBridge(_srcTokenIn, _srcAmountIn, msg.value, _gateParams);
    }

    function sendV3(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,
        uint256 _affiliateFeeAmount,
        address _affiliateFeeRecipient,
        GateParams memory _gateParams
    ) external payable override {
        _obtainSrcTokenIn(_srcTokenIn, _srcAmountIn, _srcTokenInPermitEnvelope);
        (uint256 srcAmountInAfterFee, uint256 msgValueAfterFee) = _distributeAffiliateFee(
            _srcTokenIn,
            _srcAmountIn,
            _affiliateFeeAmount,
            _affiliateFeeRecipient
        );

        _sendToBridge(_srcTokenIn, srcAmountInAfterFee, msgValueAfterFee, _gateParams);
    }

    function swapAndSendV3(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,
        uint256 _affiliateFeeAmount,
        address _affiliateFeeRecipient,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,
        address _srcTokenOut,
        GateParams memory _gateParams
    ) external payable override {
        _obtainSrcTokenIn(_srcTokenIn, _srcAmountIn, _srcTokenInPermitEnvelope);
        (uint256 srcAmountInAfterFee, uint256 msgValueAfterFee) = _distributeAffiliateFee(
            _srcTokenIn,
            _srcAmountIn,
            _affiliateFeeAmount,
            _affiliateFeeRecipient
        );

        (uint256 srcAmountOut, uint256 msgValueAfterSwap) = _performSwap(
            _srcTokenIn,
            srcAmountInAfterFee,
            msgValueAfterFee,
            _srcSwapRouter,
            _srcSwapCalldata,
            _srcTokenOut
        );

        _sendToBridge(_srcTokenOut, srcAmountOut, msgValueAfterSwap, _gateParams);
    }

    function swapAndSendV2(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,
        address _srcTokenOut,
        GateParams memory _gateParams
    ) external payable override {
        _obtainSrcTokenIn(_srcTokenIn, _srcAmountIn, _srcTokenInPermitEnvelope);

        (uint256 srcAmountOut, uint256 msgValueAfterSwap) = _performSwap(
            _srcTokenIn,
            _srcAmountIn,
            msg.value,
            _srcSwapRouter,
            _srcSwapCalldata,
            _srcTokenOut
        );

        _sendToBridge(_srcTokenOut, srcAmountOut, msgValueAfterSwap, _gateParams);
    }


    /// @dev Performs swap against arbitrary input token, refunds excessive outcome of such swap (if any),
    ///      and calls the specified receiver supplying the outcome of the swap
    /// @param _srcTokenIn arbitrary input token to swap from
    /// @param _srcAmountIn amount of input token to swap
    /// @param _srcTokenInPermitEnvelope optional permit envelope to grab the token from the caller. bytes (amount + deadline + signature)
    /// @param _swapDetails details on how to deal with swap outcome
    /// @param _target DLN contract to call after successful swap
    /// @param _targetData calldata to call against _target
    /// @param _orderId Id of an order to be fulfilled
    function strictlySwapAndCallDln(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,

        SwapDetails calldata _swapDetails,

        address _target,
        bytes calldata _targetData,
        bytes32 _orderId
    ) external payable {
        // check order status as early as possible to safe gas: DLN market is highly concurrent, and txns attempting
        // to fulfill the same order may occur in the same block
        // _target is checked later when invoking _callCustom()
        {
            (
                uint8 status,
                /*address takerAddress*/,
                /*uint256 giveChainId*/
            ) = IDlnDestination(_target).takeOrders(_orderId);
            // use require() instead of custom error because string error gives more clarity:
            // it is shown on Etherscan as well as on Tenderly
            require(status == 0, "ORDER_FULFILLED_OR_CANCELLED");
        }
        _strictlySwapAndCall(
            _srcTokenIn,
            _srcAmountIn,
            _srcTokenInPermitEnvelope,
            _swapDetails.swapRouter,
            _swapDetails.swapCalldata,
            _swapDetails.tokenOut,
            _swapDetails.tokenOutExpectedAmount,
            _swapDetails.tokenOutRefundRecipient,

            _target,
            _targetData
        );
    }


    /// @dev Performs swap against arbitrary input token, refunds excessive outcome of such swap (if any),
    ///      and calls the specified receiver supplying the outcome of the swap
    /// @param _srcTokenIn arbitrary input token to swap from
    /// @param _srcAmountIn amount of input token to swap
    /// @param _srcTokenInPermitEnvelope optional permit envelope to grab the token from the caller. bytes (amount + deadline + signature)
    /// @param _srcSwapRouter contract to call that performs swap from the input token to the output token
    /// @param _srcSwapCalldata calldata to call against _srcSwapRouter
    /// @param _srcTokenOut arbitrary output token to swap to
    /// @param _srcTokenExpectedAmountOut minimum acceptable outcome of the swap to provide to _target
    /// @param _srcTokenRefundRecipient address to send excessive outcome of the swap
    /// @param _target contract to call after successful swap
    /// @param _targetData calldata to call against _target
    function strictlySwapAndCall(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,

        address _srcTokenOut,
        uint _srcTokenExpectedAmountOut,
        address _srcTokenRefundRecipient,

        address _target,
        bytes calldata _targetData
    ) external payable {
       _strictlySwapAndCall(
            _srcTokenIn,
            _srcAmountIn,
            _srcTokenInPermitEnvelope,
            _srcSwapRouter,
            _srcSwapCalldata,

            _srcTokenOut,
            _srcTokenExpectedAmountOut,
            _srcTokenRefundRecipient,

            _target,
            _targetData
        );
    }

    /* ========== INTERNAL METHODS ========== */

    function _strictlySwapAndCall(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,

        address _srcTokenOut,
        uint _srcTokenExpectedAmountOut,
        address _srcTokenRefundRecipient,

        address _target,
        bytes calldata _targetData
    ) internal {
         //
        // pull the srcInToken from msg.sender
        //
        _obtainSrcTokenIn(_srcTokenIn, _srcAmountIn, _srcTokenInPermitEnvelope);

        //
        // swap srcInToken to srcOutToken
        //
        (uint256 srcAmountOut, uint256 msgValueAfterSwap) = _performSwap(
            _srcTokenIn,
            _srcAmountIn,
            msg.value,
            _srcSwapRouter,
            _srcSwapCalldata,
            _srcTokenOut
        );

        //
        // refund excessive srcTokenOut
        //
        if (_srcTokenExpectedAmountOut > srcAmountOut) {
            // swap returned less than expected - revert the whole txn
            revert NotEnoughSrcFundsIn(_srcTokenExpectedAmountOut);
        }
        else if (_srcTokenExpectedAmountOut < srcAmountOut) {
            // swap returned more than expected - refund
            uint refundAmount = srcAmountOut - _srcTokenExpectedAmountOut;

            // for native token - don't forget to decrease msg.value
            if (_srcTokenOut == NATIVE_TOKEN) {
                payable(_srcTokenRefundRecipient).transfer(refundAmount);
                msgValueAfterSwap -= refundAmount;
            }
            else {
                IERC20Upgradeable(_srcTokenOut).safeTransfer(_srcTokenRefundRecipient, refundAmount);
            }
            emit Refund(_srcTokenOut, refundAmount, _srcTokenRefundRecipient);
        }

        //
        // do the target call
        //
        _performTargetCall(_target, _targetData, msgValueAfterSwap, _srcTokenOut, _srcTokenExpectedAmountOut);
    }

    function _performTargetCall(address _target, bytes calldata _targetData, uint _targetValue, address _srcTokenOut, uint _srcAmountOut) internal {
        // we check both native and erc-20 balance before the call
        // For sure, we can use only one call of _getBalance, but we still must be
        // sure that native currency has the correct accounting after the call
        // where erc-20 was used
        uint tokenBalanceBeforeCall = _getBalance(_srcTokenOut);
        uint balanceBeforeCall = _getBalance(address(0));

        // do the call
        if (_srcTokenOut != NATIVE_TOKEN) {
            _lazyApprove(_srcTokenOut, _target, _srcAmountOut);
        }
        _callCustom(_target, _targetData, _targetValue);

        // check balances
        uint tokenBalanceAfterCall = _getBalance(_srcTokenOut);
        uint balanceAfterCall = _getBalance(address(0));

        // ensure _target has pulled all tokens from this contract
        if ((tokenBalanceBeforeCall - tokenBalanceAfterCall) < _srcAmountOut) {
            revert CallCausedBalanceDiscrepancy(_target, _srcTokenOut, tokenBalanceBeforeCall - _srcAmountOut, tokenBalanceBeforeCall - tokenBalanceAfterCall);
        }

        if ((balanceBeforeCall - balanceAfterCall) < _targetValue) {
            revert CallCausedBalanceDiscrepancy(_target, address(0), tokenBalanceBeforeCall - _targetValue, balanceBeforeCall - balanceAfterCall);
        }
    }

    function _getBalance(address _token) internal view returns (uint) {
        if (_token == NATIVE_TOKEN) {
            return payable(this).balance;
        }
        else {
            return IERC20Upgradeable(_token).balanceOf(address(this));
        }
    }

    function _distributeAffiliateFee(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        uint256 _affiliateFeeAmount,
        address _affiliateFeeRecipient
    ) internal returns (uint256 srcAmountInCleared, uint256 msgValueInCleared) {
        srcAmountInCleared = _srcAmountIn;
        msgValueInCleared = msg.value;

        if (_affiliateFeeAmount > 0 && _affiliateFeeRecipient != address(0)) {
            // cut off fee from srcAmountInCleared
            srcAmountInCleared -= _affiliateFeeAmount;

            if (_srcTokenIn == NATIVE_TOKEN) {
                // reduce value as well!
                msgValueInCleared -= _affiliateFeeAmount;

                (bool success, ) = _affiliateFeeRecipient.call{
                    value: _affiliateFeeAmount
                }("");
                if (!success) {
                    revert AffiliateFeeDistributionFailed(
                        _affiliateFeeRecipient,
                        NATIVE_TOKEN,
                        _affiliateFeeAmount
                    );
                }
            } else {
                IERC20Upgradeable(_srcTokenIn).safeTransfer(
                    _affiliateFeeRecipient,
                    _affiliateFeeAmount
                );
            }
        }
    }

    function _obtainSrcTokenIn(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        bytes memory _srcTokenInPermitEnvelope
    ) internal {
        if (_srcTokenIn == NATIVE_TOKEN) {
            // TODO check that msg.value = srcAmountIn + globalFixedNativeFee,
            if (address(this).balance < _srcAmountIn)
                revert NotEnoughSrcFundsIn(_srcAmountIn);
        } else {
            uint256 srcAmountCleared = _collectSrcERC20In(
                IERC20Upgradeable(_srcTokenIn),
                _srcAmountIn,
                _srcTokenInPermitEnvelope
            );
            if (srcAmountCleared < _srcAmountIn)
                revert NotEnoughSrcFundsIn(_srcAmountIn);
        }
    }

    function _performSwap(
        address _srcTokenIn,
        uint256 _srcAmountIn,
        uint256 _msgValue,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,
        address _srcTokenOut
    ) internal returns (uint256 srcAmountOut, uint256 msgValueAfterSwap) {
        if (!supportedRouters[_srcSwapRouter]) revert NotSupportedRouter();

        uint256 ethBalanceBefore = address(this).balance - _msgValue;

        if (_srcTokenIn == NATIVE_TOKEN) {
            srcAmountOut = _swapToERC20Via(
                _srcSwapRouter,
                _srcSwapCalldata,
                _srcAmountIn,
                IERC20Upgradeable(_srcTokenOut)
            );
        } else {
            _lazyApprove(_srcTokenIn, _srcSwapRouter, _srcAmountIn);
            if (_srcTokenOut == NATIVE_TOKEN) {
                srcAmountOut = _swapToETHVia(_srcSwapRouter, _srcSwapCalldata);
            } else {
                srcAmountOut = _swapToERC20Via(
                    _srcSwapRouter,
                    _srcSwapCalldata,
                    0, /*value*/
                    IERC20Upgradeable(_srcTokenOut)
                );
            }
        }

        emit SwapExecuted(_srcSwapRouter, _srcTokenIn, _srcAmountIn, _srcTokenOut, srcAmountOut);

        msgValueAfterSwap = address(this).balance - ethBalanceBefore;
    }

    function _collectSrcERC20In(
        IERC20Upgradeable _token,
        uint256 _amount,
        bytes memory _permitEnvelope
    ) internal returns (uint256) {
        // call permit before transferring token
        Permit.executePermit(address(_token), _permitEnvelope);

        uint256 balanceBefore = _token.balanceOf(address(this));
        _token.safeTransferFrom(msg.sender, address(this), _amount);
        uint256 balanceAfter = _token.balanceOf(address(this));

        if (!(balanceAfter > balanceBefore))
            revert NotEnoughSrcFundsIn(_amount);

        return (balanceAfter - balanceBefore);
    }

    function _swapToETHVia(address _router, bytes calldata _calldata)
        internal
        returns (uint256)
    {
        uint256 balanceBefore = address(this).balance;

        _callCustom(_router, _calldata, 0);

        uint256 balanceAfter = address(this).balance;

        if (balanceBefore >= balanceAfter) revert SwapEmptyResult(address(0));

        uint256 swapDstTokenBalance = balanceAfter - balanceBefore;
        return swapDstTokenBalance;
    }

    function _swapToERC20Via(
        address _router,
        bytes calldata _calldata,
        uint256 _msgValue,
        IERC20Upgradeable _targetToken
    ) internal returns (uint256) {
        uint256 balanceBefore = _targetToken.balanceOf(address(this));

        _callCustom(_router, _calldata, _msgValue);

        uint256 balanceAfter = _targetToken.balanceOf(address(this));
        if (balanceBefore >= balanceAfter)
            revert SwapEmptyResult(address(_targetToken));

        uint256 swapDstTokenBalance = balanceAfter - balanceBefore;
        return swapDstTokenBalance;
    }

    function _sendToBridge(
        address token,
        uint256 amount,
        uint256 _msgValue,
        GateParams memory _gateParams
    ) internal {
        // remember balance to correctly calc the change
        uint256 ethBalanceBefore = address(this).balance - _msgValue;

        if (token != NATIVE_TOKEN) {
            // allow deBridge gate to take all these wrapped tokens
            _lazyApprove(token, address(deBridgeGate), amount);
        }

        // send to deBridge gate
        // TODO: re-calc value
        deBridgeGate.send{value: _msgValue}(
            token, // _tokenAddress
            amount, // _amount
            _gateParams.chainId, // _chainIdTo
            abi.encodePacked(_gateParams.receiver), // _receiver
            "", // _permit
            _gateParams.useAssetFee, // _useAssetFee
            _gateParams.referralCode, // _referralCode
            _gateParams.autoParams // _autoParams
        );

        // return change, if any
        if (address(this).balance > ethBalanceBefore) {
            _safeTransferETH(
                msg.sender,
                address(this).balance - ethBalanceBefore
            );
        }
    }

    function _lazyApprove(address _tokenAddress, address _spender, uint256 _amount) internal {
        IERC20Upgradeable token = IERC20Upgradeable(_tokenAddress);
        uint256 currentAllowance = token.allowance(address(this), _spender);

        if (currentAllowance < _amount) {
            // if an approval was issued before
            token.safeApprove(_spender, 0);
            // create permanent approve
            token.safeApprove(_spender, type(uint256).max);
        }
    }

    function _callCustom(address _to, bytes calldata _data, uint _msgValue) internal {
        if (!supportedRouters[_to]) revert NotSupportedRouter();
        (bool success, bytes memory returnData) = _to.call{value: _msgValue}(_data);
        if (!success) {
            revert CallFailed(_to, returnData);
        }
    }

    // ============ ADM ============

    function updateSupportedRouter(address _srcSwapRouter, bool _isSupported)
        external
        onlyAdmin
    {
        supportedRouters[_srcSwapRouter] = _isSupported;
        emit SupportedRouter(_srcSwapRouter, _isSupported);
    }

    function rescueFunds(address token, address recipient, uint256 amount) external onlyAdmin {
        if (token == NATIVE_TOKEN) {
            _safeTransferETH(recipient, amount);
        }
        else {
            IERC20Upgradeable(token).safeTransfer(recipient, amount);
        }
    }

    // ============ Version Control ============

    /// @dev Get this contract's version
    function version() external pure returns (uint256) {
        return 210; // 2.1.0
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;

interface IDeBridgeGate {
    /* ========== STRUCTS ========== */

    struct TokenInfo {
        uint256 nativeChainId;
        bytes nativeAddress;
    }

    struct DebridgeInfo {
        uint256 chainId; // native chain id
        uint256 maxAmount; // maximum amount to transfer
        uint256 balance; // total locked assets
        uint256 lockedInStrategies; // total locked assets in strategy (AAVE, Compound, etc)
        address tokenAddress; // asset address on the current chain
        uint16 minReservesBps; // minimal hot reserves in basis points (1/10000)
        bool exist;
    }

    struct DebridgeFeeInfo {
        uint256 collectedFees; // total collected fees
        uint256 withdrawnFees; // fees that already withdrawn
        mapping(uint256 => uint256) getChainFee; // whether the chain for the asset is supported
    }

    struct ChainSupportInfo {
        uint256 fixedNativeFee; // transfer fixed fee
        bool isSupported; // whether the chain for the asset is supported
        uint16 transferFeeBps; // transfer fee rate nominated in basis points (1/10000) of transferred amount
    }

    struct DiscountInfo {
        uint16 discountFixBps; // fix discount in BPS
        uint16 discountTransferBps; // transfer % discount in BPS
    }

    /// @param executionFee Fee paid to the transaction executor.
    /// @param fallbackAddress Receiver of the tokens if the call fails.
    struct SubmissionAutoParamsTo {
        uint256 executionFee;
        uint256 flags;
        bytes fallbackAddress;
        bytes data;
    }

    /// @param executionFee Fee paid to the transaction executor.
    /// @param fallbackAddress Receiver of the tokens if the call fails.
    struct SubmissionAutoParamsFrom {
        uint256 executionFee;
        uint256 flags;
        address fallbackAddress;
        bytes data;
        bytes nativeSender;
    }

    struct FeeParams {
        uint256 receivedAmount;
        uint256 fixFee;
        uint256 transferFee;
        bool useAssetFee;
        bool isNativeToken;
    }

    /* ========== PUBLIC VARS GETTERS ========== */

    /// @dev Returns whether the transfer with the submissionId was claimed.
    /// submissionId is generated in getSubmissionIdFrom
    function isSubmissionUsed(bytes32 submissionId) external returns (bool);

    /// @dev Returns native token info by wrapped token address
    function getNativeInfo(address token) external returns (
        uint256 nativeChainId,
        bytes memory nativeAddress);

    /* ========== FUNCTIONS ========== */

    /// @dev This method is used for the transfer of assets [from the native chain](https://docs.debridge.finance/the-core-protocol/transfers#transfer-from-native-chain).
    /// It locks an asset in the smart contract in the native chain and enables minting of deAsset on the secondary chain.
    /// @param _tokenAddress Asset identifier.
    /// @param _amount Amount to be transferred (note: the fee can be applied).
    /// @param _chainIdTo Chain id of the target chain.
    /// @param _receiver Receiver address.
    /// @param _permit deadline + signature for approving the spender by signature.
    /// @param _useAssetFee use assets fee for pay protocol fix (work only for specials token)
    /// @param _referralCode Referral code
    /// @param _autoParams Auto params for external call in target network
    function send(
        address _tokenAddress,
        uint256 _amount,
        uint256 _chainIdTo,
        bytes memory _receiver,
        bytes memory _permit,
        bool _useAssetFee,
        uint32 _referralCode,
        bytes calldata _autoParams
    ) external payable;

    /// @dev Is used for transfers [into the native chain](https://docs.debridge.finance/the-core-protocol/transfers#transfer-from-secondary-chain-to-native-chain)
    /// to unlock the designated amount of asset from collateral and transfer it to the receiver.
    /// @param _debridgeId Asset identifier.
    /// @param _amount Amount of the transferred asset (note: the fee can be applied).
    /// @param _chainIdFrom Chain where submission was sent
    /// @param _receiver Receiver address.
    /// @param _nonce Submission id.
    /// @param _signatures Validators signatures to confirm
    /// @param _autoParams Auto params for external call
    function claim(
        bytes32 _debridgeId,
        uint256 _amount,
        uint256 _chainIdFrom,
        address _receiver,
        uint256 _nonce,
        bytes calldata _signatures,
        bytes calldata _autoParams
    ) external;

    /// @dev Get a flash loan, msg.sender must implement IFlashCallback
    /// @param _tokenAddress An asset to loan
    /// @param _receiver Where funds should be sent
    /// @param _amount Amount to loan
    /// @param _data Data to pass to sender's flashCallback function
    function flash(
        address _tokenAddress,
        address _receiver,
        uint256 _amount,
        bytes memory _data
    ) external;

    /// @dev Get reserves of a token available to use in defi
    /// @param _tokenAddress Token address
    function getDefiAvaliableReserves(address _tokenAddress) external view returns (uint256);

    /// @dev Request the assets to be used in DeFi protocol.
    /// @param _tokenAddress Asset address.
    /// @param _amount Amount of tokens to request.
    function requestReserves(address _tokenAddress, uint256 _amount) external;

    /// @dev Return the assets that were used in DeFi  protocol.
    /// @param _tokenAddress Asset address.
    /// @param _amount Amount of tokens to claim.
    function returnReserves(address _tokenAddress, uint256 _amount) external;

    /// @dev Withdraw collected fees to feeProxy
    /// @param _debridgeId Asset identifier.
    function withdrawFee(bytes32 _debridgeId) external;

    /// @dev Returns asset fixed fee value for specified debridge and chainId.
    /// @param _debridgeId Asset identifier.
    /// @param _chainId Chain id.
    function getDebridgeChainAssetFixedFee(
        bytes32 _debridgeId,
        uint256 _chainId
    ) external view returns (uint256);

    /* ========== EVENTS ========== */

    /// @dev Emitted once the tokens are sent from the original(native) chain to the other chain; the transfer tokens
    /// are expected to be claimed by the users.
    event Sent(
        bytes32 submissionId,
        bytes32 indexed debridgeId,
        uint256 amount,
        bytes receiver,
        uint256 nonce,
        uint256 indexed chainIdTo,
        uint32 referralCode,
        FeeParams feeParams,
        bytes autoParams,
        address nativeSender
        // bool isNativeToken //added to feeParams
    );

    /// @dev Emitted once the tokens are transferred and withdrawn on a target chain
    event Claimed(
        bytes32 submissionId,
        bytes32 indexed debridgeId,
        uint256 amount,
        address indexed receiver,
        uint256 nonce,
        uint256 indexed chainIdFrom,
        bytes autoParams,
        bool isNativeToken
    );

    /// @dev Emitted when new asset support is added.
    event PairAdded(
        bytes32 debridgeId,
        address tokenAddress,
        bytes nativeAddress,
        uint256 indexed nativeChainId,
        uint256 maxAmount,
        uint16 minReservesBps
    );

    event MonitoringSendEvent(
        bytes32 submissionId,
        uint256 nonce,
        uint256 lockedOrMintedAmount,
        uint256 totalSupply
    );

    event MonitoringClaimEvent(
        bytes32 submissionId,
        uint256 lockedOrMintedAmount,
        uint256 totalSupply
    );

    /// @dev Emitted when the asset is allowed/disallowed to be transferred to the chain.
    event ChainSupportUpdated(uint256 chainId, bool isSupported, bool isChainFrom);
    /// @dev Emitted when the supported chains are updated.
    event ChainsSupportUpdated(
        uint256 chainIds,
        ChainSupportInfo chainSupportInfo,
        bool isChainFrom);

    /// @dev Emitted when the new call proxy is set.
    event CallProxyUpdated(address callProxy);
    /// @dev Emitted when the transfer request is executed.
    event AutoRequestExecuted(
        bytes32 submissionId,
        bool indexed success,
        address callProxy
    );

    /// @dev Emitted when a submission is blocked.
    event Blocked(bytes32 submissionId);
    /// @dev Emitted when a submission is unblocked.
    event Unblocked(bytes32 submissionId);

    /// @dev Emitted when a flash loan is successfully returned.
    event Flash(
        address sender,
        address indexed tokenAddress,
        address indexed receiver,
        uint256 amount,
        uint256 paid
    );

    /// @dev Emitted when fee is withdrawn.
    event WithdrawnFee(bytes32 debridgeId, uint256 fee);

    /// @dev Emitted when globalFixedNativeFee and globalTransferFeeBps are updated.
    event FixedNativeFeeUpdated(
        uint256 globalFixedNativeFee,
        uint256 globalTransferFeeBps);

    /// @dev Emitted when globalFixedNativeFee is updated by feeContractUpdater
    event FixedNativeFeeAutoUpdated(uint256 globalFixedNativeFee);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;

import "./IDeBridgeGate.sol";

/// @dev This is a helper interface needed to access those properties that were accidentally
///      not included in the base IDeBridgeGate interface
interface IDeBridgeGateExtended is IDeBridgeGate {
    function callProxy() external returns (address);
    function globalFixedNativeFee() external returns (uint256);
    function globalTransferFeeBps() external returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        StringsUpgradeable.toHexString(account),
                        " is missing role ",
                        StringsUpgradeable.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControlUpgradeable {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-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.
 */
interface IERC20PermitUpgradeable {
    /**
     * @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].
     */
    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 v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20Upgradeable {
    /**
     * @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 v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20Upgradeable.sol";
import "../extensions/draft-IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable {
    using AddressUpgradeable for address;

    function safeTransfer(
        IERC20Upgradeable token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20Upgradeable 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(
        IERC20Upgradeable 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));
    }

    function safeIncreaseAllowance(
        IERC20Upgradeable token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20Upgradeable token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20PermitUpgradeable 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(IERC20Upgradeable 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");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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
     * ====
     *
     * [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://diligence.consensys.net/posts/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/v0.5.11/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 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 v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165Upgradeable {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library MathUpgradeable {
    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) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 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 10, 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 * 8) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/MathUpgradeable.sol";

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = MathUpgradeable.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, MathUpgradeable.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-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.
 */
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].
     */
    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 v4.6.0) (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: BUSL-1.1
pragma solidity 0.8.7;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";

contract ForwarderBase is Initializable, AccessControlUpgradeable {

    /* ========== ERRORS ========== */

    error EthTransferFailed();
    error AdminBadRole();

    /* ========== MODIFIERS ========== */

    modifier onlyAdmin() {
        if (!hasRole(DEFAULT_ADMIN_ROLE, msg.sender)) revert AdminBadRole();
        _;
    }

    /* ========== INITIALIZERS ========== */

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    function initializeBase() internal initializer {
        _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }

    function _externalCall(
        address _destination,
        bytes memory _data,
        uint256 _value
    ) internal returns (bool result) {
        assembly {
            result := call(
                gas(),
                _destination,
                _value,
                add(_data, 0x20),
                mload(_data),
                0,
                0
            )
        }
    }

    /*
     * @dev transfer ETH to an address, revert if it fails.
     * @param to recipient of the transfer
     * @param value the amount to send
     */
    function _safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        if (!success) revert EthTransferFailed();
    }

    receive() external payable {}
}

//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.7;

interface ICrossChainForwarder {
    error AffiliateFeeDistributionFailed(
        address recipient,
        address token,
        uint256 amount
    );

    struct GateParams {
        uint256 chainId;
        address receiver;
        bool useAssetFee;
        uint32 referralCode;
        bytes autoParams;
    }

    /// @dev Takes `_srcTokenInAmount` of `_srcTokenIn` from the msg.sender (executing `_srcTokenInPermit` if given),
    ///      swaps `_srcTokenIn` to `_srcTokenOut` by `CALL`-ing `_srcSwapCalldata` against `_srcSwapRouter`,
    ///      and finally sends the result of a swap to deBridge gate using the given gateParams
    /// @notice Since 1.2.0
    function swapAndSendV2(
        address _srcTokenIn,
        uint256 _srcTokenInAmount,
        bytes memory _srcTokenInPermit,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,
        address _srcTokenOut,
        GateParams memory _gateParams
    ) external payable;

    /// @dev Takes `_srcTokenInAmount` of `_srcTokenIn` from the msg.sender (executing `_srcTokenInPermit` if given),
    ///      cuts off the `affiliateFeeAmount` of `_srcTokenIn` sending this fee to `affiliateFeeRecipient` (if given),
    ///      swaps `_srcTokenIn` to `_srcTokenOut` by `CALL`-ing `_srcSwapCalldata` against `_srcSwapRouter`,
    ///      and finally sends the result of a swap to deBridge gate using the given gateParams
    /// @notice Since 1.3.0
    function swapAndSendV3(
        address _srcTokenIn,
        uint256 _srcTokenInAmount,
        bytes memory _srcTokenInPermit,
        uint256 _affiliateFeeAmount,
        address _affiliateFeeRecipient,
        address _srcSwapRouter,
        bytes calldata _srcSwapCalldata,
        address _srcTokenOut,
        GateParams memory _gateParams
    ) external payable;

    /// @dev Takes `_srcTokenInAmount` of `_srcTokenIn` from the msg.sender (executing `_srcTokenInPermit` if given),
    ///      and finally sends the resulting amount to deBridge gate using the given gateParams
    /// @notice Since 1.3.0
    function sendV2(
        address _srcTokenIn,
        uint256 _srcTokenInAmount,
        bytes memory _srcTokenInPermit,
        GateParams memory _gateParams
    ) external payable;

    /// @dev Takes `_srcTokenInAmount` of `_srcTokenIn` from the msg.sender (executing `_srcTokenInPermit` if given),
    ///      cuts off the `affiliateFeeAmount` of `_srcTokenIn` sending this fee to `affiliateFeeRecipient` (if given),
    ///      and finally sends the resulting amount to deBridge gate using the given gateParams
    /// @notice Since 1.3.0
    function sendV3(
        address _srcTokenIn,
        uint256 _srcTokenInAmount,
        bytes memory _srcTokenInPermit,
        uint256 _affiliateFeeAmount,
        address _affiliateFeeRecipient,
        GateParams memory _gateParams
    ) external payable;
}

// SPDX-License-Identifier: UNLICENSED
// !! THIS FILE WAS AUTOGENERATED BY abi-to-sol v0.6.6. SEE SOURCE BELOW. !!
pragma solidity ^0.8.4;

interface IDlnDestination {

    function takeOrders(bytes32)
        external
        view
        returns (
            uint8 status,
            address takerAddress,
            uint256 giveChainId
        );
}

// THIS FILE WAS AUTOGENERATED FROM THE FOLLOWING ABI JSON:
/*
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DlnBase.Order","name":"_order","type":"tuple"},{"internalType":"uint256","name":"_newSubtrahend","type":"uint256"}],"name":"patchOrderTake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"_orderIds","type":"bytes32[]"},{"internalType":"address","name":"_beneficiary","type":"address"},{"internalType":"uint256","name":"_executionFee","type":"uint256"}],"name":"sendBatchEvmUnlock","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"uint64","name":"makerOrderNonce","type":"uint64"},{"internalType":"bytes","name":"makerSrc","type":"bytes"},{"internalType":"uint256","name":"giveChainId","type":"uint256"},{"internalType":"bytes","name":"giveTokenAddress","type":"bytes"},{"internalType":"uint256","name":"giveAmount","type":"uint256"},{"internalType":"uint256","name":"takeChainId","type":"uint256"},{"internalType":"bytes","name":"takeTokenAddress","type":"bytes"},{"internalType":"uint256","name":"takeAmount","type":"uint256"},{"internalType":"bytes","name":"receiverDst","type":"bytes"},{"internalType":"bytes","name":"givePatchAuthoritySrc","type":"bytes"},{"internalType":"bytes","name":"orderAuthorityAddressDst","type":"bytes"},{"internalType":"bytes","name":"allowedTakerDst","type":"bytes"},{"internalType":"bytes","name":"allowedCancelBeneficiarySrc","type":"bytes"},{"internalType":"bytes","name":"externalCall","type":"bytes"}],"internalType":"struct DlnBase.Order","name":"_order","type":"tuple"},{"internalType":"address","name":"_cancelBeneficiary","type":"address"},{"internalType":"uint256","name":"_executionFee","type":"uint256"}],"name":"sendEvmOrderCancel","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_orderId","type":"bytes32"},{"internalType":"address","name":"_beneficiary","type":"address"},{"internalType":"uint256","name":"_executionFee","type":"uint256"}],"name":"sendEvmUnlock","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"uint64","name":"makerOrderNonce","type":"uint64"},{"internalType":"bytes","name":"makerSrc","type":"bytes"},{"internalType":"uint256","name":"giveChainId","type":"uint256"},{"internalType":"bytes","name":"giveTokenAddress","type":"bytes"},{"internalType":"uint256","name":"giveAmount","type":"uint256"},{"internalType":"uint256","name":"takeChainId","type":"uint256"},{"internalType":"bytes","name":"takeTokenAddress","type":"bytes"},{"internalType":"uint256","name":"takeAmount","type":"uint256"},{"internalType":"bytes","name":"receiverDst","type":"bytes"},{"internalType":"bytes","name":"givePatchAuthoritySrc","type":"bytes"},{"internalType":"bytes","name":"orderAuthorityAddressDst","type":"bytes"},{"internalType":"bytes","name":"allowedTakerDst","type":"bytes"},{"internalType":"bytes","name":"allowedCancelBeneficiarySrc","type":"bytes"},{"internalType":"bytes","name":"externalCall","type":"bytes"}],"internalType":"struct DlnBase.Order","name":"_order","type":"tuple"},{"internalType":"bytes32","name":"_cancelBeneficiary","type":"bytes32"},{"internalType":"uint256","name":"_executionFee","type":"uint256"},{"internalType":"uint64","name":"_reward1","type":"uint64"},{"internalType":"uint64","name":"_reward2","type":"uint64"}],"name":"sendSolanaOrderCancel","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"uint64","name":"makerOrderNonce","type":"uint64"},{"internalType":"bytes","name":"makerSrc","type":"bytes"},{"internalType":"uint256","name":"giveChainId","type":"uint256"},{"internalType":"bytes","name":"giveTokenAddress","type":"bytes"},{"internalType":"uint256","name":"giveAmount","type":"uint256"},{"internalType":"uint256","name":"takeChainId","type":"uint256"},{"internalType":"bytes","name":"takeTokenAddress","type":"bytes"},{"internalType":"uint256","name":"takeAmount","type":"uint256"},{"internalType":"bytes","name":"receiverDst","type":"bytes"},{"internalType":"bytes","name":"givePatchAuthoritySrc","type":"bytes"},{"internalType":"bytes","name":"orderAuthorityAddressDst","type":"bytes"},{"internalType":"bytes","name":"allowedTakerDst","type":"bytes"},{"internalType":"bytes","name":"allowedCancelBeneficiarySrc","type":"bytes"},{"internalType":"bytes","name":"externalCall","type":"bytes"}],"internalType":"struct DlnBase.Order","name":"_order","type":"tuple"},{"internalType":"bytes32","name":"_beneficiary","type":"bytes32"},{"internalType":"uint256","name":"_executionFee","type":"uint256"},{"internalType":"uint64","name":"_solanaExternalCallReward1","type":"uint64"},{"internalType":"uint64","name":"_solanaExternalCallReward2","type":"uint64"}],"name":"sendSolanaUnlock","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_chainIdFrom","type":"uint256"},{"internalType":"bytes","name":"_dlnSourceAddress","type":"bytes"},{"internalType":"enum DlnBase.ChainEngine","name":"_chainEngine","type":"uint8"}],"name":"setDlnSourceAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"takeOrders","outputs":[{"internalType":"enum DlnDestination.OrderTakeStatus","name":"status","type":"uint8"},{"internalType":"address","name":"takerAddress","type":"address"},{"internalType":"uint256","name":"giveChainId","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"takePatches","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"}]
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "./SignatureUtil.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

library Permit {
    using SignatureUtil for bytes;

    function executePermit(address _tokenAddress, bytes memory _permitEnvelope) internal {
        if (_permitEnvelope.length > 0) {
            uint256 permitAmount = _permitEnvelope.toUint256(0);
            uint256 deadline = _permitEnvelope.toUint256(32);
            (bytes32 r, bytes32 s, uint8 v) = _permitEnvelope.parseSignature(64);
            try
                IERC20Permit(_tokenAddress).permit(
                    msg.sender,
                    address(this),
                    permitAmount,
                    deadline,
                    v,
                    r,
                    s
                )
            {
                return;
            } catch {
                if (IERC20(_tokenAddress).allowance(msg.sender, address(this)) >= permitAmount) {
                    return;
                }
            }
            revert("Permit failure");
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.7;

library SignatureUtil {
    /* ========== ERRORS ========== */

    error WrongArgumentLength();
    error SignatureInvalidLength();
    error SignatureInvalidV();

    /// @dev Prepares raw msg that was signed by the oracle.
    /// @param _submissionId Submission identifier.
    function getUnsignedMsg(bytes32 _submissionId) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", _submissionId));
    }

    /// @dev Splits signature bytes to r,s,v components.
    /// @param _signature Signature bytes in format r+s+v.
    function splitSignature(bytes memory _signature)
        internal
        pure
        returns (
            bytes32 r,
            bytes32 s,
            uint8 v
        )
    {
        if (_signature.length != 65) revert SignatureInvalidLength();
        return parseSignature(_signature, 0);
    }

    function parseSignature(bytes memory _signatures, uint256 offset)
        internal
        pure
        returns (
            bytes32 r,
            bytes32 s,
            uint8 v
        )
    {
        assembly {
            r := mload(add(_signatures, add(32, offset)))
            s := mload(add(_signatures, add(64, offset)))
            v := and(mload(add(_signatures, add(65, offset))), 0xff)
        }

        if (v < 27) v += 27;
        if (v != 27 && v != 28) revert SignatureInvalidV();
    }

    function toUint256(bytes memory _bytes, uint256 _offset)
        internal
        pure
        returns (uint256 result)
    {
        if (_bytes.length < _offset + 32) revert WrongArgumentLength();

        assembly {
            result := mload(add(add(_bytes, 0x20), _offset))
        }
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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IDeBridgeGateExtended","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IDeBridgeGateExtended","name":"_deBridgeGate","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"rescueFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_srcTokenIn","type":"address"},{"internalType":"uint256","name":"_srcAmountIn","type":"uint256"},{"internalType":"bytes","name":"_srcTokenInPermitEnvelope","type":"bytes"},{"components":[{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"bool","name":"useAssetFee","type":"bool"},{"internalType":"uint32","name":"referralCode","type":"uint32"},{"internalType":"bytes","name":"autoParams","type":"bytes"}],"internalType":"struct ICrossChainForwarder.GateParams","name":"_gateParams","type":"tuple"}],"name":"sendV2","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_srcTokenIn","type":"address"},{"internalType":"uint256","name":"_srcAmountIn","type":"uint256"},{"internalType":"bytes","name":"_srcTokenInPermitEnvelope","type":"bytes"},{"internalType":"uint256","name":"_affiliateFeeAmount","type":"uint256"},{"internalType":"address","name":"_affiliateFeeRecipient","type":"address"},{"components":[{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"bool","name":"useAssetFee","type":"bool"},{"internalType":"uint32","name":"referralCode","type":"uint32"},{"internalType":"bytes","name":"autoParams","type":"bytes"}],"internalType":"struct ICrossChainForwarder.GateParams","name":"_gateParams","type":"tuple"}],"name":"sendV3","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_srcTokenIn","type":"address"},{"internalType":"uint256","name":"_srcAmountIn","type":"uint256"},{"internalType":"bytes","name":"_srcTokenInPermitEnvelope","type":"bytes"},{"internalType":"address","name":"_srcSwapRouter","type":"address"},{"internalType":"bytes","name":"_srcSwapCalldata","type":"bytes"},{"internalType":"address","name":"_srcTokenOut","type":"address"},{"internalType":"uint256","name":"_srcTokenExpectedAmountOut","type":"uint256"},{"internalType":"address","name":"_srcTokenRefundRecipient","type":"address"},{"internalType":"address","name":"_target","type":"address"},{"internalType":"bytes","name":"_targetData","type":"bytes"}],"name":"strictlySwapAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_srcTokenIn","type":"address"},{"internalType":"uint256","name":"_srcAmountIn","type":"uint256"},{"internalType":"bytes","name":"_srcTokenInPermitEnvelope","type":"bytes"},{"components":[{"internalType":"address","name":"swapRouter","type":"address"},{"internalType":"bytes","name":"swapCalldata","type":"bytes"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"tokenOutExpectedAmount","type":"uint256"},{"internalType":"address","name":"tokenOutRefundRecipient","type":"address"}],"internalType":"struct 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ICrossChainForwarder.GateParams","name":"_gateParams","type":"tuple"}],"name":"swapAndSendV2","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_srcTokenIn","type":"address"},{"internalType":"uint256","name":"_srcAmountIn","type":"uint256"},{"internalType":"bytes","name":"_srcTokenInPermitEnvelope","type":"bytes"},{"internalType":"uint256","name":"_affiliateFeeAmount","type":"uint256"},{"internalType":"address","name":"_affiliateFeeRecipient","type":"address"},{"internalType":"address","name":"_srcSwapRouter","type":"address"},{"internalType":"bytes","name":"_srcSwapCalldata","type":"bytes"},{"internalType":"address","name":"_srcTokenOut","type":"address"},{"components":[{"internalType":"uint256","name":"chainId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"},{"internalType":"bool","name":"useAssetFee","type":"bool"},{"internalType":"uint32","name":"referralCode","type":"uint32"},{"internalType":"bytes","name":"autoParams","type":"bytes"}],"internalType":"struct ICrossChainForwarder.GateParams","name":"_gateParams","type":"tuple"}],"name":"swapAndSendV3","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_srcSwapRouter","type":"address"},{"internalType":"bool","name":"_isSupported","type":"bool"}],"name":"updateSupportedRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"stateMutability":"payable","type":"receive"}]

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