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// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.7.6;
pragma abicoder v2;

import "./interfaces/IStargateRouter.sol";
import "./interfaces/IStargateEthVault.sol";

contract RouterETH {
    address public immutable stargateEthVault;
    IStargateRouter public immutable stargateRouter;
    uint16 public immutable poolId;

    constructor(address _stargateEthVault, address _stargateRouter, uint16 _poolId){
        require(_stargateEthVault != address(0x0), "RouterETH: _stargateEthVault cant be 0x0");
        require(_stargateRouter != address(0x0), "RouterETH: _stargateRouter cant be 0x0");
        stargateEthVault = _stargateEthVault;
        stargateRouter = IStargateRouter(_stargateRouter);
        poolId = _poolId;
    }

    function addLiquidityETH() external payable {
        require(msg.value > 0, "Stargate: msg.value is 0");

        uint256 amountLD = msg.value;

        // wrap the ETH into WETH
        IStargateEthVault(stargateEthVault).deposit{value: amountLD}();
        IStargateEthVault(stargateEthVault).approve(address(stargateRouter), amountLD);

        // addLiquidity using the WETH that was just wrapped,
        // and mint the LP token to the msg.sender
        stargateRouter.addLiquidity(
            poolId,
            amountLD,
            msg.sender
        );
    }

    // compose stargate to swap ETH on the source to ETH on the destination
    function swapETH(
        uint16 _dstChainId,                         // destination Stargate chainId
        address payable _refundAddress,             // refund additional messageFee to this address
        bytes calldata _toAddress,                  // the receiver of the destination ETH
        uint256 _amountLD,                          // the amount, in Local Decimals, to be swapped
        uint256 _minAmountLD                        // the minimum amount accepted out on destination
    ) external payable {
        require(msg.value > _amountLD, "Stargate: msg.value must be > _amountLD");

        // wrap the ETH into WETH
        IStargateEthVault(stargateEthVault).deposit{value: _amountLD}();
        IStargateEthVault(stargateEthVault).approve(address(stargateRouter), _amountLD);

        // messageFee is the remainder of the msg.value after wrap
        uint256 messageFee = msg.value - _amountLD;

        // compose a stargate swap() using the WETH that was just wrapped
        stargateRouter.swap{value: messageFee}(
            _dstChainId,                        // destination Stargate chainId
            poolId,                             // WETH Stargate poolId on source
            poolId,                             // WETH Stargate poolId on destination
            _refundAddress,                     // message refund address if overpaid
            _amountLD,                          // the amount in Local Decimals to swap()
            _minAmountLD,                       // the minimum amount swap()er would allow to get out (ie: slippage)
            IStargateRouter.lzTxObj(0, 0, "0x"),
            _toAddress,                         // address on destination to send to
            bytes("")                           // empty payload, since sending to EOA
        );
    }

    // this contract needs to accept ETH
    receive() external payable {}

}

// SPDX-License-Identifier: BUSL-1.1

pragma solidity 0.7.6;
pragma abicoder v2;

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);
}

pragma solidity 0.7.6;

interface IStargateEthVault {
    function deposit() external payable;
    function transfer(address to, uint value) external returns (bool);
    function withdraw(uint) external;
    function approve(address guy, uint wad) external returns (bool);
    function transferFrom(address src, address dst, uint wad) external returns (bool);
}

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

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[{"inputs":[{"internalType":"address","name":"_stargateEthVault","type":"address"},{"internalType":"address","name":"_stargateRouter","type":"address"},{"internalType":"uint16","name":"_poolId","type":"uint16"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"addLiquidityETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"poolId","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stargateEthVault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stargateRouter","outputs":[{"internalType":"contract IStargateRouter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"bytes","name":"_toAddress","type":"bytes"},{"internalType":"uint256","name":"_amountLD","type":"uint256"},{"internalType":"uint256","name":"_minAmountLD","type":"uint256"}],"name":"swapETH","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000b69c8cbcd90a39d8d3d3ccf0a3e968511c3856a0000000000000000000000000b0d502e938ed5f4df2e681fe6e419ff29631d62b000000000000000000000000000000000000000000000000000000000000000d

-----Decoded View---------------
Arg [0] : _stargateEthVault (address): 0xb69c8CBCD90A39D8D3d3ccf0a3E968511C3856A0
Arg [1] : _stargateRouter (address): 0xB0D502E938ed5f4df2E681fE6E419ff29631d62b
Arg [2] : _poolId (uint16): 13

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000b69c8cbcd90a39d8d3d3ccf0a3e968511c3856a0
Arg [1] : 000000000000000000000000b0d502e938ed5f4df2e681fe6e419ff29631d62b
Arg [2] : 000000000000000000000000000000000000000000000000000000000000000d