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// SPDX-License-Identifier: MIT
pragma solidity =0.6.12;
pragma experimental ABIEncoderV2;

import './interfaces/IWooPP.sol';
import './interfaces/IWETH.sol';
import './interfaces/IWooRouter.sol';

import './interfaces/Stargate/IStargateRouter.sol';
import './interfaces/Stargate/IStargateReceiver.sol';

import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/math/SafeMath.sol';
import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol';
import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
import '@uniswap/lib/contracts/libraries/TransferHelper.sol';

/// @title Woo Router implementation.
/// @notice Router for stateless execution of swaps against Woo private pool.
/// Ref links:
/// chain id: https://stargateprotocol.gitbook.io/stargate/developers/contract-addresses/mainnet
/// poold id: https://stargateprotocol.gitbook.io/stargate/developers/pool-ids
contract WooCrossChainRouter is IStargateReceiver, Ownable, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    event WooCrossSwapOnSrcChain(
        uint256 indexed refId,
        address indexed sender,
        address indexed to,
        address fromToken,
        uint256 fromAmount,
        uint256 minQuoteAmount,
        uint256 realQuoteAmount
    );

    event WooCrossSwapOnDstChain(
        uint256 indexed refId,
        address indexed sender,
        address indexed to,
        address bridgedToken,
        uint256 bridgedAmount,
        address toToken,
        address realToToken,
        uint256 minToAmount,
        uint256 realToAmount
    );

    address constant ETH_PLACEHOLDER_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    IStargateRouter public stargateRouter;
    IWooPP public wooPool;
    address public quoteToken;
    address public WETH;
    uint256 public bridgeSlippage; // 1 in 10000th: default 1%
    uint256 public dstGasForSwapCall;
    uint256 public dstGasForNoSwapCall;

    mapping(uint16 => address) public wooCrossRouters; // dstChainId => woo router
    mapping(uint16 => uint256) public quotePoolIds; // chainId => woofi_quote_token_pool_id
    mapping(uint16 => address) public wooppQuoteTokens; // dstChainId => wooPP quote token

    receive() external payable {}

    constructor(
        address _weth,
        address _wooPool,
        address _stargateRouter
    ) public {
        WETH = _weth;
        wooPool = IWooPP(_wooPool);
        quoteToken = wooPool.quoteToken();
        stargateRouter = IStargateRouter(_stargateRouter);

        bridgeSlippage = 100;

        // from test result: https://docs.google.com/spreadsheets/d/1TdGKNQ68HAic2jgMs40pKp7kM6AfKGHjIKkyVGwolIU
        dstGasForSwapCall = 360000;
        dstGasForNoSwapCall = 80000;

        // usdc: 1, usdt: 2, busd: 5
        quotePoolIds[1] = 1; // ethereum: usdc
        quotePoolIds[2] = 2; // BSC: usdt
        quotePoolIds[6] = 1; // Avalanche: usdc
        quotePoolIds[9] = 1; // Polygon: usdc
        quotePoolIds[10] = 1; // Arbitrum: usdc
        quotePoolIds[11] = 1; // Optimism: usdc
        quotePoolIds[12] = 1; // Fantom: usdc

        wooppQuoteTokens[2] = address(0x55d398326f99059fF775485246999027B3197955); // bsc_wooPP: usdt
        wooppQuoteTokens[6] = address(0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E); // avax_wooPP: usdc
        wooppQuoteTokens[12] = address(0x04068DA6C83AFCFA0e13ba15A6696662335D5B75); // ftm_wooPP: usdc
    }

    function setWooppQuoteTokens(uint16 _chainId, address _token) public onlyOwner {
        wooppQuoteTokens[_chainId] = _token;
    }

    /*
    https://stargateprotocol.gitbook.io/stargate/developers/contract-addresses/mainnet
        - Chain ID : Chain -
        1: Ether
        2: BSC (BNB Chain)
        6: Avalanche
        9: Polygon
        10: Arbitrum
        11: Optimism
        12: Fantom
    */
    function setWooCrossChainRouter(uint16 _chainId, address _wooCrossRouter) external onlyOwner {
        require(_wooCrossRouter != address(0), 'WooCrossChainRouter: !wooCrossRouter');
        wooCrossRouters[_chainId] = _wooCrossRouter;
    }

    function setStargateRouter(address _stargateRouter) external onlyOwner {
        require(_stargateRouter != address(0), 'WooCrossChainRouter: !stargateRouter');
        stargateRouter = IStargateRouter(_stargateRouter);
    }

    function setWooPool(address _wooPool) external onlyOwner {
        wooPool = IWooPP(_wooPool);
    }

    function setBridgeSlippage(uint256 _bridgeSlippage) external onlyOwner {
        require(_bridgeSlippage <= 10000, 'WooCrossChainRouter: !_bridgeSlippage');
        bridgeSlippage = _bridgeSlippage;
    }

    function setDstGasForSwapCall(uint256 _dstGasForSwapCall) external onlyOwner {
        dstGasForSwapCall = _dstGasForSwapCall;
    }

    function setDstGasForNoSwapCall(uint256 _dstGasForNoSwapCall) external onlyOwner {
        dstGasForNoSwapCall = _dstGasForNoSwapCall;
    }

    function setQuotePoolId(uint16 _chainId, uint256 _quotePoolId) external onlyOwner {
        quotePoolIds[_chainId] = _quotePoolId;
    }

    function crossSwap(
        uint256 refId_,
        address fromToken,
        address toToken,
        uint256 fromAmount,
        uint256 srcMinQuoteAmount,
        uint256 dstMinToAmount,
        uint16 srcChainId,
        uint16 dstChainId,
        address payable to
    ) external payable {
        require(fromToken != address(0), 'WooCrossChainRouter: !fromToken');
        require(toToken != address(0), 'WooCrossChainRouter: !toToken');
        require(to != address(0), 'WooCrossChainRouter: !to');

        uint256 gasValue = msg.value;
        uint256 refId = refId_; // NOTE: to avoid stack too deep issue

        // Step 1: transfer
        {
            bool isFromETH = fromToken == ETH_PLACEHOLDER_ADDR;
            fromToken = isFromETH ? WETH : fromToken;
            if (isFromETH) {
                require(fromAmount <= msg.value, 'WooCrossChainRouter: !fromAmount');
                IWETH(WETH).deposit{value: fromAmount}();
                gasValue -= fromAmount;
            } else {
                TransferHelper.safeTransferFrom(fromToken, msg.sender, address(this), fromAmount);
            }
        }

        // Step 2: local transfer
        uint256 bridgeAmount;
        if (fromToken != quoteToken) {
            TransferHelper.safeApprove(fromToken, address(wooPool), fromAmount);
            bridgeAmount = wooPool.sellBase(fromToken, fromAmount, srcMinQuoteAmount, address(this), to);
        } else {
            bridgeAmount = fromAmount;
        }

        // Step 3: send to stargate
        require(bridgeAmount <= IERC20(quoteToken).balanceOf(address(this)), '!bridgeAmount');
        TransferHelper.safeApprove(quoteToken, address(stargateRouter), bridgeAmount);

        require(to != address(0), 'WooCrossChainRouter: to_ZERO_ADDR'); // NOTE: double check it
        {
            bytes memory payloadData;
            payloadData = abi.encode(
                toToken, // to token
                refId, // reference id
                dstMinToAmount, // minToAmount on destination chain
                to // to address
            );

            bytes memory dstWooCrossRouter = abi.encodePacked(wooCrossRouters[dstChainId]);
            uint256 minBridgeAmount = bridgeAmount.mul(uint256(10000).sub(bridgeSlippage)).div(10000);
            uint256 dstGas = (toToken == wooppQuoteTokens[dstChainId]) ? dstGasForNoSwapCall : dstGasForSwapCall;

            stargateRouter.swap{value: gasValue}(
                dstChainId, // dst chain id
                quotePoolIds[srcChainId], // quote token's pool id on dst chain
                quotePoolIds[dstChainId], // quote token's pool id on src chain
                payable(msg.sender), // rebate address
                bridgeAmount, // swap amount on src chain
                minBridgeAmount, // min received amount on dst chain
                IStargateRouter.lzTxObj(dstGas, 0, '0x'), // config: dstGas, dstNativeToken, dstNativeTokenToAddress
                dstWooCrossRouter, // smart contract to call on dst chain
                payloadData // payload to piggyback
            );
        }

        emit WooCrossSwapOnSrcChain(refId, msg.sender, to, fromToken, fromAmount, srcMinQuoteAmount, bridgeAmount);
    }

    function quoteLayerZeroFee(
        uint16 dstChainId,
        address toToken,
        uint256 refId,
        uint256 dstMinToAmount,
        address to
    ) external view returns (uint256, uint256) {
        bytes memory toAddress = abi.encodePacked(to);
        bytes memory payloadData = abi.encode(
            toToken, // to token
            refId, // reference id
            dstMinToAmount, // minToAmount on destination chain
            to // to address
        );
        uint256 dstGas = (toToken == wooppQuoteTokens[dstChainId]) ? dstGasForNoSwapCall : dstGasForSwapCall;
        return
            stargateRouter.quoteLayerZeroFee(
                dstChainId,
                1, // https://stargateprotocol.gitbook.io/stargate/developers/function-types
                toAddress,
                payloadData,
                IStargateRouter.lzTxObj(dstGas, 0, '0x')
            );
    }

    function sgReceive(
        uint16 _chainId,
        bytes memory _srcAddress,
        uint256 _nonce,
        address _token,
        uint256 amountLD,
        bytes memory payload
    ) external override {
        require(msg.sender == address(stargateRouter), 'WooCrossChainRouter: INVALID_CALLER');

        (address toToken, uint256 refId, uint256 minToAmount, address to) = abi.decode(
            payload,
            (address, uint256, uint256, address)
        );

        if (wooPool.quoteToken() != _token) {
            // NOTE: The bridged token is not WooPP's quote token.
            // So Cannot do the swap; just return it to users.
            TransferHelper.safeTransfer(_token, to, amountLD);
            emit WooCrossSwapOnDstChain(
                refId,
                msg.sender,
                to,
                _token,
                amountLD,
                toToken,
                _token,
                minToAmount,
                amountLD
            );
            return;
        }

        uint256 quoteAmount = amountLD;
        TransferHelper.safeApprove(_token, address(wooPool), quoteAmount);

        if (toToken == ETH_PLACEHOLDER_ADDR) {
            // quoteToken -> WETH -> ETH
            try wooPool.sellQuote(WETH, quoteAmount, minToAmount, address(this), to) returns (uint256 realToAmount) {
                IWETH(WETH).withdraw(realToAmount);
                TransferHelper.safeTransferETH(to, realToAmount);
                emit WooCrossSwapOnDstChain(
                    refId,
                    msg.sender,
                    to,
                    _token,
                    amountLD,
                    toToken,
                    ETH_PLACEHOLDER_ADDR,
                    minToAmount,
                    realToAmount
                );
            } catch {
                // transfer _token/amountLD to msg.sender because the swap failed for some reason.
                // this is not the ideal scenario, but the contract needs to deliver them eth or USDC.
                TransferHelper.safeTransfer(_token, to, amountLD);
                emit WooCrossSwapOnDstChain(
                    refId,
                    msg.sender,
                    to,
                    _token,
                    amountLD,
                    toToken,
                    _token,
                    minToAmount,
                    amountLD
                );
            }
        } else {
            if (_token == toToken) {
                // Stargate bridged token == toToken: NO swap is needed!
                TransferHelper.safeTransfer(toToken, to, amountLD);
                emit WooCrossSwapOnDstChain(
                    refId,
                    msg.sender,
                    to,
                    _token,
                    amountLD,
                    toToken,
                    toToken,
                    minToAmount,
                    amountLD
                );
            } else {
                // swap to the ERC20 token
                try wooPool.sellQuote(toToken, quoteAmount, minToAmount, to, to) returns (uint256 realToAmount) {
                    emit WooCrossSwapOnDstChain(
                        refId,
                        msg.sender,
                        to,
                        _token,
                        amountLD,
                        toToken,
                        toToken,
                        minToAmount,
                        realToAmount
                    );
                } catch {
                    TransferHelper.safeTransfer(_token, to, amountLD);
                    emit WooCrossSwapOnDstChain(
                        refId,
                        msg.sender,
                        to,
                        _token,
                        amountLD,
                        toToken,
                        _token,
                        minToAmount,
                        amountLD
                    );
                }
            }
        }
    }

    function inCaseTokensGetStuck(address stuckToken) external onlyOwner {
        uint256 amount = IERC20(stuckToken).balanceOf(address(this));
        if (amount > 0) {
            TransferHelper.safeTransfer(stuckToken, msg.sender, amount);
        }
    }

    function inCaseNativeTokensGetStuck() external onlyOwner {
        if (address(this).balance > 0) {
            TransferHelper.safeTransferETH(msg.sender, address(this).balance);
        }
    }

    function _generalTransfer(
        address token,
        address payable to,
        uint256 amount
    ) private {
        if (amount > 0) {
            if (token == ETH_PLACEHOLDER_ADDR) {
                TransferHelper.safeTransferETH(to, amount);
            } else {
                TransferHelper.safeTransfer(token, to, amount);
            }
        }
    }

    function _generalBalanceOf(address token, address who) private view returns (uint256) {
        return token == ETH_PLACEHOLDER_ADDR ? who.balance : IERC20(token).balanceOf(who);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity =0.6.12;
pragma experimental ABIEncoderV2;

/*

░██╗░░░░░░░██╗░█████╗░░█████╗░░░░░░░███████╗██╗
░██║░░██╗░░██║██╔══██╗██╔══██╗░░░░░░██╔════╝██║
░╚██╗████╗██╔╝██║░░██║██║░░██║█████╗█████╗░░██║
░░████╔═████║░██║░░██║██║░░██║╚════╝██╔══╝░░██║
░░╚██╔╝░╚██╔╝░╚█████╔╝╚█████╔╝░░░░░░██║░░░░░██║
░░░╚═╝░░░╚═╝░░░╚════╝░░╚════╝░░░░░░░╚═╝░░░░░╚═╝

*
* MIT License
* ===========
*
* Copyright (c) 2020 WooTrade
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

/// @title Woo private pool for swap.
/// @notice Use this contract to directly interfact with woo's synthetic proactive
///         marketing making pool.
/// @author woo.network
interface IWooPP {
    /* ----- Type declarations ----- */

    /// @dev struct info to store the token info
    struct TokenInfo {
        uint112 reserve; // Token balance
        uint112 threshold; // Threshold for reserve update
        uint32 lastResetTimestamp; // Timestamp for last param update
        uint64 R; // Rebalance coefficient [0, 1]
        uint112 target; // Targeted balance for pricing
        bool isValid; // is this token info valid
    }

    /* ----- Events ----- */

    event StrategistUpdated(address indexed strategist, bool flag);
    event FeeManagerUpdated(address indexed newFeeManager);
    event RewardManagerUpdated(address indexed newRewardManager);
    event WooracleUpdated(address indexed newWooracle);
    event WooGuardianUpdated(address indexed newWooGuardian);
    event ParametersUpdated(address indexed baseToken, uint256 newThreshold, uint256 newR);
    event Withdraw(address indexed token, address indexed to, uint256 amount);
    event WooSwap(
        address indexed fromToken,
        address indexed toToken,
        uint256 fromAmount,
        uint256 toAmount,
        address from,
        address indexed to,
        address rebateTo
    );

    /* ----- External Functions ----- */

    /// @dev Swap baseToken into quoteToken
    /// @param baseToken the base token
    /// @param baseAmount amount of baseToken that user want to swap
    /// @param minQuoteAmount minimum amount of quoteToken that user accept to receive
    /// @param to quoteToken receiver address
    /// @param rebateTo the wallet address for rebate
    /// @return quoteAmount the swapped amount of quote token
    function sellBase(
        address baseToken,
        uint256 baseAmount,
        uint256 minQuoteAmount,
        address to,
        address rebateTo
    ) external returns (uint256 quoteAmount);

    /// @dev Swap quoteToken into baseToken
    /// @param baseToken the base token
    /// @param quoteAmount amount of quoteToken that user want to swap
    /// @param minBaseAmount minimum amount of baseToken that user accept to receive
    /// @param to baseToken receiver address
    /// @param rebateTo the wallet address for rebate
    /// @return baseAmount the swapped amount of base token
    function sellQuote(
        address baseToken,
        uint256 quoteAmount,
        uint256 minBaseAmount,
        address to,
        address rebateTo
    ) external returns (uint256 baseAmount);

    /// @dev Query the amount for selling the base token amount.
    /// @param baseToken the base token to sell
    /// @param baseAmount the amount to sell
    /// @return quoteAmount the swapped quote amount
    function querySellBase(address baseToken, uint256 baseAmount) external view returns (uint256 quoteAmount);

    /// @dev Query the amount for selling the quote token.
    /// @param baseToken the base token to receive (buy)
    /// @param quoteAmount the amount to sell
    /// @return baseAmount the swapped base token amount
    function querySellQuote(address baseToken, uint256 quoteAmount) external view returns (uint256 baseAmount);

    /// @dev get the quote token address (immutable)
    /// @return address of quote token
    function quoteToken() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity =0.6.12;
pragma experimental ABIEncoderV2;

/// @title Wrapped ETH.
/// BSC: https://bscscan.com/address/0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c#code
interface IWETH {
    /// @dev Deposit ETH into WETH
    function deposit() external payable;

    /// @dev Transfer WETH to receiver
    /// @param to address of WETH receiver
    /// @param value amount of WETH to transfer
    /// @return get true when succeed, else false
    function transfer(address to, uint256 value) external returns (bool);

    /// @dev Withdraw WETH to ETH
    function withdraw(uint256) external;
}

// SPDX-License-Identifier: MIT
pragma solidity =0.6.12;
pragma experimental ABIEncoderV2;

/*

░██╗░░░░░░░██╗░█████╗░░█████╗░░░░░░░███████╗██╗
░██║░░██╗░░██║██╔══██╗██╔══██╗░░░░░░██╔════╝██║
░╚██╗████╗██╔╝██║░░██║██║░░██║█████╗█████╗░░██║
░░████╔═████║░██║░░██║██║░░██║╚════╝██╔══╝░░██║
░░╚██╔╝░╚██╔╝░╚█████╔╝╚█████╔╝░░░░░░██║░░░░░██║
░░░╚═╝░░░╚═╝░░░╚════╝░░╚════╝░░░░░░░╚═╝░░░░░╚═╝

*
* MIT License
* ===========
*
* Copyright (c) 2020 WooTrade
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

import '../interfaces/IWooPP.sol';

/// @title Woo router interface
/// @notice functions to interface with WooFi swap
interface IWooRouter {
    /* ----- Type declarations ----- */

    enum SwapType {
        WooSwap,
        DodoSwap
    }

    /* ----- Events ----- */

    event WooRouterSwap(
        SwapType swapType,
        address indexed fromToken,
        address indexed toToken,
        uint256 fromAmount,
        uint256 toAmount,
        address from,
        address indexed to,
        address rebateTo
    );

    event WooPoolChanged(address newPool);

    /* ----- Router properties ----- */

    function WETH() external pure returns (address);

    function wooPool() external pure returns (IWooPP);

    /* ----- Main query & swap APIs ----- */

    /// @dev query the amount to swap fromToken -> toToken
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of fromToken to swap
    /// @return toAmount the predicted amount to receive
    function querySwap(
        address fromToken,
        address toToken,
        uint256 fromAmount
    ) external view returns (uint256 toAmount);

    /// @dev swap fromToken -> toToken
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of fromToken to swap
    /// @param minToAmount the amount of fromToken to swap
    /// @param to the destination address
    /// @param rebateTo the rebate address (optional, can be 0)
    /// @return realToAmount the amount of toToken to receive
    function swap(
        address fromToken,
        address toToken,
        uint256 fromAmount,
        uint256 minToAmount,
        address payable to,
        address rebateTo
    ) external payable returns (uint256 realToAmount);

    /* ----- 3rd party DEX swap ----- */

    /// @dev swap fromToken -> toToken via an external 3rd swap
    /// @param approveTarget the contract address for token transfer approval
    /// @param swapTarget the contract address for swap
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of fromToken to swap
    /// @param to the destination address
    /// @param data call data for external call
    function externalSwap(
        address approveTarget,
        address swapTarget,
        address fromToken,
        address toToken,
        uint256 fromAmount,
        address payable to,
        bytes calldata data
    ) external payable;

    /// @dev swap fromToken -> toToken via an external 3rd swap
    /// @param approveTarget the contract address for token transfer approval
    /// @param swapTarget the contract address for swap
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of fromToken to swap
    /// @param minToAmount the min amount of swapped toToken
    /// @param to the destination address
    /// @param data call data for external call
    function externalSwap(
        address approveTarget,
        address swapTarget,
        address fromToken,
        address toToken,
        uint256 fromAmount,
        uint256 minToAmount,
        address payable to,
        bytes calldata data
    ) external payable returns (uint256 realToAmount);
}

// SPDX-License-Identifier: BUSL-1.1

pragma solidity =0.6.12;
pragma experimental ABIEncoderV2;

interface IStargateRouter {
    struct lzTxObj {
        uint256 dstGasForCall;
        uint256 dstNativeAmount;
        bytes dstNativeAddr;
    }

    function addLiquidity(
        uint256 _poolId,
        uint256 _amountLD,
        address _to
    ) external;

    function swap(
        uint16 _dstChainId,
        uint256 _srcPoolId,
        uint256 _dstPoolId,
        address payable _refundAddress,
        uint256 _amountLD,
        uint256 _minAmountLD,
        lzTxObj memory _lzTxParams,
        bytes calldata _to,
        bytes calldata _payload
    ) external payable;

    function redeemRemote(
        uint16 _dstChainId,
        uint256 _srcPoolId,
        uint256 _dstPoolId,
        address payable _refundAddress,
        uint256 _amountLP,
        uint256 _minAmountLD,
        bytes calldata _to,
        lzTxObj memory _lzTxParams
    ) external payable;

    function instantRedeemLocal(
        uint16 _srcPoolId,
        uint256 _amountLP,
        address _to
    ) external returns (uint256);

    function redeemLocal(
        uint16 _dstChainId,
        uint256 _srcPoolId,
        uint256 _dstPoolId,
        address payable _refundAddress,
        uint256 _amountLP,
        bytes calldata _to,
        lzTxObj memory _lzTxParams
    ) external payable;

    function sendCredits(
        uint16 _dstChainId,
        uint256 _srcPoolId,
        uint256 _dstPoolId,
        address payable _refundAddress
    ) external payable;

    function quoteLayerZeroFee(
        uint16 _dstChainId,
        uint8 _functionType,
        bytes calldata _toAddress,
        bytes calldata _transferAndCallPayload,
        lzTxObj memory _lzTxParams
    ) external view returns (uint256, uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity =0.6.12;

interface IStargateReceiver {
    function sgReceive(
        uint16 _chainId,
        bytes memory _srcAddress,
        uint256 _nonce,
        address _token,
        uint256 amountLD,
        bytes memory payload
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

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

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

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

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.6.0;

// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::safeApprove: approve failed'
        );
    }

    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::safeTransfer: transfer failed'
        );
    }

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            'TransferHelper::transferFrom: transferFrom failed'
        );
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_weth","type":"address"},{"internalType":"address","name":"_wooPool","type":"address"},{"internalType":"address","name":"_stargateRouter","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"refId","type":"uint256"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"address","name":"bridgedToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"bridgedAmount","type":"uint256"},{"indexed":false,"internalType":"address","name":"toToken","type":"address"},{"indexed":false,"internalType":"address","name":"realToToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"minToAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"realToAmount","type":"uint256"}],"name":"WooCrossSwapOnDstChain","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"refId","type":"uint256"},{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"address","name":"fromToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"fromAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minQuoteAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"realQuoteAmount","type":"uint256"}],"name":"WooCrossSwapOnSrcChain","type":"event"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bridgeSlippage","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"refId_","type":"uint256"},{"internalType":"address","name":"fromToken","type":"address"},{"internalType":"address","name":"toToken","type":"address"},{"internalType":"uint256","name":"fromAmount","type":"uint256"},{"internalType":"uint256","name":"srcMinQuoteAmount","type":"uint256"},{"internalType":"uint256","name":"dstMinToAmount","type":"uint256"},{"internalType":"uint16","name":"srcChainId","type":"uint16"},{"internalType":"uint16","name":"dstChainId","type":"uint16"},{"internalType":"address payable","name":"to","type":"address"}],"name":"crossSwap","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"dstGasForNoSwapCall","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dstGasForSwapCall","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"inCaseNativeTokensGetStuck","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"stuckToken","type":"address"}],"name":"inCaseTokensGetStuck","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"dstChainId","type":"uint16"},{"internalType":"address","name":"toToken","type":"address"},{"internalType":"uint256","name":"refId","type":"uint256"},{"internalType":"uint256","name":"dstMinToAmount","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"quoteLayerZeroFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"quotePoolIds","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"quoteToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_bridgeSlippage","type":"uint256"}],"name":"setBridgeSlippage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_dstGasForNoSwapCall","type":"uint256"}],"name":"setDstGasForNoSwapCall","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_dstGasForSwapCall","type":"uint256"}],"name":"setDstGasForSwapCall","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint256","name":"_quotePoolId","type":"uint256"}],"name":"setQuotePoolId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_stargateRouter","type":"address"}],"name":"setStargateRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"address","name":"_wooCrossRouter","type":"address"}],"name":"setWooCrossChainRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_wooPool","type":"address"}],"name":"setWooPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"address","name":"_token","type":"address"}],"name":"setWooppQuoteTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"amountLD","type":"uint256"},{"internalType":"bytes","name":"payload","type":"bytes"}],"name":"sgReceive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stargateRouter","outputs":[{"internalType":"contract IStargateRouter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"wooCrossRouters","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"wooPool","outputs":[{"internalType":"contract IWooPP","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"wooppQuoteTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000b31f66aa3c1e785363f0875a1b74e27b85fd66c70000000000000000000000001df3009c57a8b143c6246149f00b090bce3b8f8800000000000000000000000045a01e4e04f14f7a4a6702c74187c5f6222033cd

-----Decoded View---------------
Arg [0] : _weth (address): 0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7
Arg [1] : _wooPool (address): 0x1df3009c57a8B143c6246149F00B090Bce3b8f88
Arg [2] : _stargateRouter (address): 0x45A01E4e04F14f7A4a6702c74187c5F6222033cd

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000b31f66aa3c1e785363f0875a1b74e27b85fd66c7
Arg [1] : 0000000000000000000000001df3009c57a8b143c6246149f00b090bce3b8f88
Arg [2] : 00000000000000000000000045a01e4e04f14f7a4a6702c74187c5f6222033cd