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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

import { TransferHelper } from "./libraries/TransferHelper.sol";

contract AnonSwap {
    using TransferHelper for address;

    struct SwapPath {
        address to; // The target contract address for executing the swap.
        bytes callData; // The data for invoking the swap function.
    }

    struct SwapData {
        address tokenIn; // The input token. Use address(0) or any native token address for ETH.
        address tokenOut; // The output token. Use address(0) or any native token address for ETH.
        uint256 amountIn; // The amount of the input token to swap.
        uint256 minAmountOut; // The expected amount of the output token after the swap.
        SwapPath swapPath; // to. calldata from aggregator to execute.
    }

    event Swap(
        address sender,
        address tokenIn,
        address tokenOut,
        uint256 amountIn,
        uint256 amountOut
    );

    function swap(SwapData calldata _swapData, bool isNativeOut) external payable {
        bool isNativeIn = msg.value > 0;
        if (isNativeIn) {
            require(msg.value == _swapData.amountIn, "Invalid amountIn");
        } else {
            _swapData.tokenIn.safeTransferFrom(msg.sender, address(this), _swapData.amountIn);
            _swapData.tokenIn.safeApprove(_swapData.swapPath.to, _swapData.amountIn);
        }

        (bool check, ) = address(_swapData.swapPath.to).staticcall(
            abi.encodeWithSignature("decimals()")
        );
        require(!check, "wrong target");

        (bool success, ) = _swapData.swapPath.to.call{ value: isNativeIn ? msg.value : 0 }(
            _swapData.swapPath.callData
        );
        require(success, "Call failed");

        if (!isNativeIn) _swapData.tokenIn.safeApprove(_swapData.swapPath.to, 0);
        uint amountOut = isNativeOut ? address(this).balance : _swapData.tokenOut.getBalance();
        require(amountOut >= _swapData.minAmountOut, "Fail minAmountOut");

        if (isNativeOut) {
            (bool ok, ) = msg.sender.call{ value: amountOut }("");
            require(ok, "send native failed");
        } else {
            _swapData.tokenOut.safeTransfer(msg.sender, amountOut);
        }

        emit Swap(msg.sender, _swapData.tokenIn, _swapData.tokenOut, _swapData.amountIn, amountOut);
    }

    receive() external payable {}
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: GPL-2.0-or-later
// https://github.com/Uniswap/v3-periphery/blob/main/contracts/libraries/TransferHelper.sol
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

library TransferHelper {
    /// @notice Transfers tokens from the targeted address to the given destination
    /// @notice Errors with 'STF' if transfer fails
    /// @param token The contract address of the token to be transferred
    /// @param from The originating address from which the tokens will be transferred
    /// @param to The destination address of the transfer
    /// @param value The amount to be transferred
    function safeTransferFrom(address token, address from, address to, uint256 value) internal {
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, value)
        );
        require(success && (data.length == 0 || abi.decode(data, (bool))), "BP-STF");
    }

    /// @notice Transfers tokens from msg.sender to a recipient
    /// @dev Errors with ST if transfer fails
    /// @param token The contract address of the token which will be transferred
    /// @param to The recipient of the transfer
    /// @param value The value of the transfer
    function safeTransfer(address token, address to, uint256 value) internal {
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(IERC20.transfer.selector, to, value)
        );
        require(success && (data.length == 0 || abi.decode(data, (bool))), "BP-ST");
    }

    function getBalance(address token) internal view returns (uint256 balance) {
        bytes memory callData = abi.encodeWithSelector(IERC20.balanceOf.selector, address(this));
        (bool success, bytes memory data) = token.staticcall(callData);
        require(success && data.length >= 32);
        balance = abi.decode(data, (uint256));
    }

    function getBalanceOf(address token, address target) internal view returns (uint256 balance) {
        bytes memory callData = abi.encodeWithSelector(IERC20.balanceOf.selector, target);
        (bool success, bytes memory data) = token.staticcall(callData);
        require(success && data.length >= 32);
        balance = abi.decode(data, (uint256));
    }

    function safeApprove(address token, address spender, uint256 amount) internal {
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(IERC20.approve.selector, spender, amount)
        );
        require(success && (data.length == 0 || abi.decode(data, (bool))), "BP-SA");
    }
}

{
  "viaIR": false,
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"tokenIn","type":"address"},{"indexed":false,"internalType":"address","name":"tokenOut","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountIn","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountOut","type":"uint256"}],"name":"Swap","type":"event"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"minAmountOut","type":"uint256"},{"components":[{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"}],"internalType":"struct AnonSwap.SwapPath","name":"swapPath","type":"tuple"}],"internalType":"struct AnonSwap.SwapData","name":"_swapData","type":"tuple"},{"internalType":"bool","name":"isNativeOut","type":"bool"}],"name":"swap","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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