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// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import { SafeTransferLib } from "../lib/SafeTransferLib.sol";
import { TSAggregator } from "./TSAggregator.sol";
import { IThorchainRouter } from "./interfaces/IThorchainRouter.sol";
import { IUniswapRouterV2 } from "./interfaces/IUniswapRouterV2.sol";

contract TSAggregatorUniswapV2 is TSAggregator {
    using SafeTransferLib for address;

    address public weth;
    IUniswapRouterV2 public swapRouter;

    constructor(
      address _ttp, address _weth, address _swapRouter
    ) TSAggregator(_ttp) {
        weth = _weth;
        swapRouter = IUniswapRouterV2(_swapRouter);
    }

    function swapIn(
        address tcRouter,
        address tcVault,
        string calldata tcMemo,
        address token,
        uint amount,
        uint amountOutMin,
        uint deadline
    ) public nonReentrant {
        tokenTransferProxy.transferTokens(token, msg.sender, address(this), amount);
        token.safeApprove(address(swapRouter), 0); // USDT quirk
        token.safeApprove(address(swapRouter), amount);

        address[] memory path = new address[](2);
        path[0] = token;
        path[1] = weth;
        swapRouter.swapExactTokensForETH(
            amount,
            amountOutMin,
            path,
            address(this),
            deadline
        );

        uint amountOut = skimFee(address(this).balance);
        IThorchainRouter(tcRouter).depositWithExpiry{value: amountOut}(
            payable(tcVault),
            address(0), // ETH
            amountOut,
            tcMemo,
            deadline
        );
    }

    function swapOut(address token, address to, uint256 amountOutMin) public payable nonReentrant {
        uint256 amount = skimFee(msg.value);
        address[] memory path = new address[](2);
        path[0] = weth;
        path[1] = token;
        swapRouter.swapExactETHForTokens{value: amount}(
            _parseAmountOutMin(amountOutMin),
            path,
            to,
            type(uint).max // deadline
        );
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/SafeTransferLib.sol)
/// @author Modified from Gnosis (https://github.com/gnosis/gp-v2-contracts/blob/main/src/contracts/libraries/GPv2SafeERC20.sol)
/// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer.
library SafeTransferLib {
    /*///////////////////////////////////////////////////////////////
                            ETH OPERATIONS
    //////////////////////////////////////////////////////////////*/

    function safeTransferETH(address to, uint256 amount) internal {
        bool callStatus;

        assembly {
            // Transfer the ETH and store if it succeeded or not.
            callStatus := call(gas(), to, amount, 0, 0, 0, 0)
        }

        require(callStatus, "ETH_TRANSFER_FAILED");
    }

    /*///////////////////////////////////////////////////////////////
                           ERC20 OPERATIONS
    //////////////////////////////////////////////////////////////*/

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 amount
    ) internal {
        bool callStatus;

        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata to memory piece by piece:
            mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000) // Begin with the function selector.
            mstore(add(freeMemoryPointer, 4), and(from, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "from" argument.
            mstore(add(freeMemoryPointer, 36), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "to" argument.
            mstore(add(freeMemoryPointer, 68), amount) // Finally append the "amount" argument. No mask as it's a full 32 byte value.

            // Call the token and store if it succeeded or not.
            // We use 100 because the calldata length is 4 + 32 * 3.
            callStatus := call(gas(), token, 0, freeMemoryPointer, 100, 0, 0)
        }

        require(didLastOptionalReturnCallSucceed(callStatus), "TRANSFER_FROM_FAILED");
    }

    function safeTransfer(
        address token,
        address to,
        uint256 amount
    ) internal {
        bool callStatus;

        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata to memory piece by piece:
            mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000) // Begin with the function selector.
            mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "to" argument.
            mstore(add(freeMemoryPointer, 36), amount) // Finally append the "amount" argument. No mask as it's a full 32 byte value.

            // Call the token and store if it succeeded or not.
            // We use 68 because the calldata length is 4 + 32 * 2.
            callStatus := call(gas(), token, 0, freeMemoryPointer, 68, 0, 0)
        }

        require(didLastOptionalReturnCallSucceed(callStatus), "TRANSFER_FAILED");
    }

    function safeApprove(
        address token,
        address to,
        uint256 amount
    ) internal {
        bool callStatus;

        assembly {
            // Get a pointer to some free memory.
            let freeMemoryPointer := mload(0x40)

            // Write the abi-encoded calldata to memory piece by piece:
            mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000) // Begin with the function selector.
            mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "to" argument.
            mstore(add(freeMemoryPointer, 36), amount) // Finally append the "amount" argument. No mask as it's a full 32 byte value.

            // Call the token and store if it succeeded or not.
            // We use 68 because the calldata length is 4 + 32 * 2.
            callStatus := call(gas(), token, 0, freeMemoryPointer, 68, 0, 0)
        }

        require(didLastOptionalReturnCallSucceed(callStatus), "APPROVE_FAILED");
    }

    /*///////////////////////////////////////////////////////////////
                         INTERNAL HELPER LOGIC
    //////////////////////////////////////////////////////////////*/

    function didLastOptionalReturnCallSucceed(bool callStatus) private pure returns (bool success) {
        assembly {
            // Get how many bytes the call returned.
            let returnDataSize := returndatasize()

            // If the call reverted:
            if iszero(callStatus) {
                // Copy the revert message into memory.
                returndatacopy(0, 0, returnDataSize)

                // Revert with the same message.
                revert(0, returnDataSize)
            }

            switch returnDataSize
            case 32 {
                // Copy the return data into memory.
                returndatacopy(0, 0, returnDataSize)

                // Set success to whether it returned true.
                success := iszero(iszero(mload(0)))
            }
            case 0 {
                // There was no return data.
                success := 1
            }
            default {
                // It returned some malformed input.
                success := 0
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import { SafeTransferLib } from "../lib/SafeTransferLib.sol";
import { ReentrancyGuard } from "../lib/ReentrancyGuard.sol";
import { Owners } from "./Owners.sol";
import { TSAggregatorTokenTransferProxy } from './TSAggregatorTokenTransferProxy.sol';

abstract contract TSAggregator is Owners, ReentrancyGuard {
    using SafeTransferLib for address;

    event FeeSet(uint256 fee, address feeRecipient);

    uint256 public fee;
    address public feeRecipient;
    TSAggregatorTokenTransferProxy public tokenTransferProxy;

    constructor(address _tokenTransferProxy) {
        _setOwner(msg.sender, true);
        tokenTransferProxy = TSAggregatorTokenTransferProxy(_tokenTransferProxy);
    }

    // Needed for the swap router to be able to send back ETH
    receive() external payable {}

    function setFee(uint256 _fee, address _feeRecipient) external isOwner {
        require(_fee <= 1000, "fee can not be more than 10%");
        fee = _fee;
        feeRecipient = _feeRecipient;
        emit FeeSet(_fee, _feeRecipient);
    }

    function skimFee(uint256 amount) internal returns (uint256) {
        if (fee != 0 && feeRecipient != address(0)) {
            uint256 feeAmount = (amount * fee) / 10000;
            feeRecipient.safeTransferETH(feeAmount);
            amount -= feeAmount;
        }
        return amount;
    }

    // Parse amountOutMin treating the last 2 digits as an exponent
    // So 15e4 = 150000. This allows for compressed memos on chains
    // with limited space like Bitcoin
    function _parseAmountOutMin(uint256 amount) internal pure returns (uint256) {
      return amount / 100 * (10 ** (amount % 100));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

interface IThorchainRouter {
    function depositWithExpiry(
        address payable vault,
        address asset,
        uint amount,
        string memory memo,
        uint expiration
    ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

interface IUniswapRouterV2 {
    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to, uint deadline
    ) external payable;
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Gas optimized reentrancy protection for smart contracts.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/ReentrancyGuard.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol)
abstract contract ReentrancyGuard {
    uint256 private locked = 1;

    modifier nonReentrant() {
        require(locked == 1, "REENTRANCY");

        locked = 2;

        _;

        locked = 1;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

abstract contract Owners {
    event OwnerSet(address indexed owner, bool active);

    mapping(address => bool) public owners;

    modifier isOwner() {
        require(owners[msg.sender], "Unauthorized");
        _;
    }

    function _setOwner(address owner, bool active) internal virtual {
      owners[owner] = active;
      emit OwnerSet(owner, active);
    }

    function setOwner(address owner, bool active) external virtual isOwner {
      _setOwner(owner, active);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import { SafeTransferLib } from "../lib/SafeTransferLib.sol";
import { Owners } from "./Owners.sol";

contract TSAggregatorTokenTransferProxy is Owners {
    using SafeTransferLib for address;

    constructor() {
        _setOwner(msg.sender, true);
    }

    function transferTokens(address token, address from, address to, uint256 amount) external isOwner {
        require(from == tx.origin || _isContract(from), "Invalid from address");
        token.safeTransferFrom(from, to, amount);
    }

    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;
    }
}

{
  "remappings": [
    "hardhat/=node_modules/hardhat/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

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[{"inputs":[{"internalType":"address","name":"_ttp","type":"address"},{"internalType":"address","name":"_weth","type":"address"},{"internalType":"address","name":"_swapRouter","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"},{"indexed":false,"internalType":"address","name":"feeRecipient","type":"address"}],"name":"FeeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"bool","name":"active","type":"bool"}],"name":"OwnerSet","type":"event"},{"inputs":[],"name":"fee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"owners","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_fee","type":"uint256"},{"internalType":"address","name":"_feeRecipient","type":"address"}],"name":"setFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"bool","name":"active","type":"bool"}],"name":"setOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tcRouter","type":"address"},{"internalType":"address","name":"tcVault","type":"address"},{"internalType":"string","name":"tcMemo","type":"string"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapIn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"}],"name":"swapOut","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"swapRouter","outputs":[{"internalType":"contract IUniswapRouterV2","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenTransferProxy","outputs":[{"internalType":"contract TSAggregatorTokenTransferProxy","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000f892fef9da200d9e84c9b0647ecff0f34633abe8000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d

-----Decoded View---------------
Arg [0] : _ttp (address): 0xF892Fef9dA200d9E84c9b0647ecFF0F34633aBe8
Arg [1] : _weth (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [2] : _swapRouter (address): 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000f892fef9da200d9e84c9b0647ecff0f34633abe8
Arg [1] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [2] : 0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d