// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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 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) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

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

interface IRouter {
    function WETH() external pure returns (address);
    function getAmountsOut(uint amountIn, address[] memory path) external view returns (uint[] memory amounts);
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

contract ChainpalRouter is Ownable {
    IRouter public router;
    address public feeDistributor;
    address public wethAddress;

    constructor(address _router, address _feeDistributor) Ownable(msg.sender) {
        router = IRouter(_router);
        feeDistributor = _feeDistributor;
        wethAddress = router.WETH(); // Dynamically fetch WETH based on router
    }

    // Buy tokens with ETH
    function buyTokenWithETH(address token, uint256 slippage) external payable {
        uint256 fee = msg.value / 100; // 1% fee
        uint256 amountToBuy = msg.value - fee;

        payable(feeDistributor).transfer(fee);

        address[] memory path = new address[](2);
        path[0] = wethAddress;  // Automatically handles WETH on ETH networks
        path[1] = token;

        uint256[] memory amountOut = router.getAmountsOut(amountToBuy, path);
        uint256 amountOutMin = (amountOut[1] * (100 - slippage)) / 100;

        router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amountToBuy}(
            amountOutMin,
            path,
            msg.sender,
            block.timestamp + 100000
        );
    }

    // Swap token to token
    function buyTokensWithTokens(
        address inputToken,
        address outputToken,
        uint256 amountIn,
        uint256 slippage
    ) external {
        uint256 allowance = IERC20(inputToken).allowance(msg.sender, address(this));
        require(allowance >= amountIn, "Token allowance too low");

        IERC20(inputToken).transferFrom(msg.sender, address(this), amountIn);
        IERC20(inputToken).approve(address(router), amountIn);

        address[] memory path = new address[](2);
        path[0] = inputToken;
        path[1] = outputToken;

        uint256[] memory amountOut = router.getAmountsOut(amountIn, path);
        uint256 amountOutMin = (amountOut[1] * (100 - slippage)) / 100;

        router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            amountIn,
            amountOutMin,
            path,
            msg.sender,
            block.timestamp + 100000
        );
    }

    // Sell tokens for ETH
    function sellTokensForETH(
        address token,
        uint256 amount,
        uint256 slippage
    ) external {
        uint256 allowance = IERC20(token).allowance(msg.sender, address(this));
        require(allowance >= amount, "Token allowance too low");

        IERC20(token).transferFrom(msg.sender, address(this), amount);
        IERC20(token).approve(address(router), amount);

        address[] memory path = new address[](2);
        path[0] = token;
        path[1] = wethAddress;

        uint256[] memory amountOut = router.getAmountsOut(amount, path);
        uint256 amountOutMin = (amountOut[1] * (100 - slippage)) / 100;

        uint256 initialBalance = address(this).balance;

        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amount,
            amountOutMin,
            path,
            address(this),
            block.timestamp + 100000
        );

        uint256 ethReceived = address(this).balance - initialBalance;
        uint256 fee = ethReceived / 100; // 1% fee
        uint256 ethToSend = ethReceived - fee;

        payable(feeDistributor).transfer(fee);
        payable(msg.sender).transfer(ethToSend);
    }

    // Sell tokens for tokens
    function sellTokensForTokens(
        address inputToken,
        address outputToken,
        uint256 amountIn,
        uint256 slippage
    ) external {
        uint256 allowance = IERC20(inputToken).allowance(msg.sender, address(this));
        require(allowance >= amountIn, "Token allowance too low");

        IERC20(inputToken).transferFrom(msg.sender, address(this), amountIn);
        IERC20(inputToken).approve(address(router), amountIn);

        address[] memory path = new address[](2);
        path[0] = inputToken;
        path[1] = outputToken;

        uint256[] memory amountOut = router.getAmountsOut(amountIn, path);
        uint256 amountOutMin = (amountOut[1] * (100 - slippage)) / 100;

        router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            amountIn,
            amountOutMin,
            path,
            msg.sender,
            block.timestamp + 100000
        );
    }

    // Fallback function to accept ETH
    fallback() external payable { }
    receive() external payable { }

    // Update the fee distributor
    function updateFeeDistributor(address newFeeDistributor) external onlyOwner {
        feeDistributor = newFeeDistributor;
    }
}

{
  "compilationTarget": {
    "contracts/ethRouter.sol": "ChainpalRouter"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "remappings": []
}