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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {
    ISwapConnector, SwapParams
} from "contracts/interfaces/ISwapConnector.sol";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

struct AggregatorExtraData {
    bytes data;
}

contract AggregatorConnector is ISwapConnector {
    error AggregatorSwapFailed(bytes error);
    error NotImplemented();
    error InvalidInputValue();
    error InsufficientOutputAmount(uint256 received, uint256 minRequired);
    error InvalidOutputToken();

    event SwapExecuted(
        address indexed router,
        address indexed tokenIn,
        address indexed tokenOut,
        uint256 amountIn,
        uint256 desiredAmountOut,
        uint256 minAmountOut,
        uint256 actualAmountOut
    );

    function swapExactTokensForTokens(
        SwapParams memory swap
    ) external override {
        if (swap.tokenIn == swap.tokenOut) {
            revert InvalidOutputToken();
        }

        AggregatorExtraData memory extraData =
            abi.decode(swap.extraData, (AggregatorExtraData));

        // For swaps to ETH, tokenOut is address(0)
        bool isETHOut = swap.tokenOut == address(0);

        uint256 balanceBefore = isETHOut
            ? address(this).balance
            : IERC20(swap.tokenOut).balanceOf(address(this));

        (bool success, bytes memory error) = swap.router.call(extraData.data);
        if (!success) {
            revert AggregatorSwapFailed(error);
        }

        uint256 balanceAfter = isETHOut
            ? address(this).balance
            : IERC20(swap.tokenOut).balanceOf(address(this));

        uint256 amountReceived = balanceAfter - balanceBefore;

        if (amountReceived < swap.minAmountOut) {
            revert InsufficientOutputAmount(amountReceived, swap.minAmountOut);
        }

        emit SwapExecuted(
            swap.router,
            swap.tokenIn,
            swap.tokenOut,
            swap.amountIn,
            swap.desiredAmountOut,
            swap.minAmountOut,
            amountReceived
        );
    }

    function swapExactETHForTokens(
        SwapParams memory swap
    ) external override {
        AggregatorExtraData memory extraData =
            abi.decode(swap.extraData, (AggregatorExtraData));

        // For ETH to token swaps, tokenOut should be a valid token
        if (swap.tokenOut == address(0)) {
            revert InvalidOutputToken();
        }

        uint256 balanceBefore = IERC20(swap.tokenOut).balanceOf(address(this));

        (bool success, bytes memory error) =
            swap.router.call{ value: swap.amountIn }(extraData.data);
        if (!success) {
            revert AggregatorSwapFailed(error);
        }

        uint256 balanceAfter = IERC20(swap.tokenOut).balanceOf(address(this));
        uint256 amountReceived = balanceAfter - balanceBefore;

        if (amountReceived < swap.minAmountOut) {
            revert InsufficientOutputAmount(amountReceived, swap.minAmountOut);
        }

        emit SwapExecuted(
            swap.router,
            swap.tokenIn,
            swap.tokenOut,
            swap.amountIn,
            swap.desiredAmountOut,
            swap.minAmountOut,
            amountReceived
        );
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { SwapParams } from "contracts/structs/SwapStructs.sol";

interface ISwapConnector {
    function swapExactTokensForTokens(
        SwapParams memory swap
    ) external;

    function swapExactETHForTokens(
        SwapParams memory swap
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

struct SwapParams {
    address tokenApproval;
    address router;
    uint256 amountIn;
    uint256 desiredAmountOut;
    uint256 minAmountOut;
    address tokenIn;
    address tokenOut;
    bytes extraData;
}

{
  "remappings": [
    "solmate/=lib/solmate/src/",
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@morpho-blue/=lib/morpho-blue/src/",
    "ds-test/=lib/solmate/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "morpho-blue/=lib/morpho-blue/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"bytes","name":"error","type":"bytes"}],"name":"AggregatorSwapFailed","type":"error"},{"inputs":[{"internalType":"uint256","name":"received","type":"uint256"},{"internalType":"uint256","name":"minRequired","type":"uint256"}],"name":"InsufficientOutputAmount","type":"error"},{"inputs":[],"name":"InvalidInputValue","type":"error"},{"inputs":[],"name":"InvalidOutputToken","type":"error"},{"inputs":[],"name":"NotImplemented","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"router","type":"address"},{"indexed":true,"internalType":"address","name":"tokenIn","type":"address"},{"indexed":true,"internalType":"address","name":"tokenOut","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountIn","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"desiredAmountOut","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"minAmountOut","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"actualAmountOut","type":"uint256"}],"name":"SwapExecuted","type":"event"},{"inputs":[{"components":[{"internalType":"address","name":"tokenApproval","type":"address"},{"internalType":"address","name":"router","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"desiredAmountOut","type":"uint256"},{"internalType":"uint256","name":"minAmountOut","type":"uint256"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"bytes","name":"extraData","type":"bytes"}],"internalType":"struct SwapParams","name":"swap","type":"tuple"}],"name":"swapExactETHForTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenApproval","type":"address"},{"internalType":"address","name":"router","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"desiredAmountOut","type":"uint256"},{"internalType":"uint256","name":"minAmountOut","type":"uint256"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"bytes","name":"extraData","type":"bytes"}],"internalType":"struct SwapParams","name":"swap","type":"tuple"}],"name":"swapExactTokensForTokens","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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