// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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
pragma solidity ^0.8.0;

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

interface ISwap {
    function swapETHForExactTokens(
        uint amountOut,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);
}

contract TokenSwap {
    ISwap public swapContract;
    address public owner;

    constructor(address _swapContract) {
        swapContract = ISwap(_swapContract); // Swap contract (e.g., Uniswap router)
        owner = msg.sender;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Not the contract owner");
        _;
    }

    // Function to perform multiple swaps in a loop
    function do_swaps(
        address tokenAddress,
        address baseTokenAddress,
        uint256 amountIn,
        uint256 n
    ) external onlyOwner 
    {
        IERC20 token = IERC20(tokenAddress);
        address[] memory path = new address[](2);
        path[0] = baseTokenAddress; // First token address
        path[1] = tokenAddress; // Second token address
        // Approve the swap only once
        token.approve(address(swapContract), amountIn * n);
        uint256 SMALL_ETH_AMOUNT = 100000000000000;
        for (uint256 i = 0; i < n; i++) {
            uint deadline = block.timestamp + 60; // 1 minutes from the current block timestamp
            swapContract.swapETHForExactTokens{
            value: SMALL_ETH_AMOUNT // Use contract's Ether balance
            }(
                amountIn,
                path ,
                msg.sender,
                deadline
            );
        }
    }
    // Fallback function to allow the contract to receive ETH
    receive() external payable {
        // This contract can now receive ETH directly
    }
    // Function to withdraw any remaining tokens from the contract (for recovery purposes)
    function withdrawTokens(address tokenAddress) external onlyOwner {
        IERC20 token = IERC20(tokenAddress);
        uint256 balance = token.balanceOf(address(this));
        require(balance > 0, "No tokens to withdraw");
        token.transfer(owner, balance);
    }
        // Function to withdraw Ether from the contract
    function withdrawEther() external onlyOwner {
        uint256 balance = address(this).balance;
        require(balance > 0, "No Ether to withdraw");
        payable(owner).transfer(balance);
    }
}

{
  "compilationTarget": {
    "contracts/do_swaps.sol": "TokenSwap"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": []
}