Review this contract generated with help of AI

Smart Contracts Review Wanted
1 
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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

interface ILendingPool {
    function flashLoan(
        address receiver,
        address[] calldata assets,
        uint256[] calldata amounts,
        uint256[] calldata modes,
        address onBehalfOf,
        bytes calldata params,
        uint16 referralCode
    ) external;
}

interface UniswapV2Router {
    function getAmountsOut(uint amountIn, address[] memory path) external view returns (uint[] memory amounts);
    function swapExactTokensForTokens(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts);
}

interface TokenInterface {
    function balanceOf(address account) external view returns (uint256);
}

contract ArbitrageManager {
    using SafeMath for uint256;

    address public owner;
    address public yieldExchangeAddress;
    address public tokenAddress;
    address public uniswapRouterAddress; // Address of Uniswap router
    address public lendingPoolAddress; // Address of the Aave lending pool

    uint256 public constant ARBITRAGE_WINDOW = 10 minutes;
    bool public emergencyStop = false;

    uint256 public maxSlippagePercentage = 1; // Maximum allowed slippage percentage

    modifier onlyOwner() {
        require(msg.sender == owner, "Only the owner can perform this action");
        _;
    }

    modifier notPaused() {
        require(!emergencyStop, "Contract is paused");
        _;
    }

    constructor(
        address _yieldExchangeAddress,
        address _tokenAddress,
        address _uniswapRouterAddress,
        address _lendingPoolAddress
    ) {
        owner = msg.sender;
        yieldExchangeAddress = _yieldExchangeAddress;
        tokenAddress = _tokenAddress;
        uniswapRouterAddress = _uniswapRouterAddress;
        lendingPoolAddress = _lendingPoolAddress;
    }

    function setOwner(address _newOwner) external onlyOwner {
        owner = _newOwner;
    }

    function setYieldExchangeAddress(address _newYieldExchange) external onlyOwner notPaused {
        yieldExchangeAddress = _newYieldExchange;
    }

    function setTokenAddress(address _newToken) external onlyOwner notPaused {
        tokenAddress = _newToken;
    }

    function setUniswapRouterAddress(address _newUniswapRouter) external onlyOwner notPaused {
        uniswapRouterAddress = _newUniswapRouter;
    }

    function setLendingPoolAddress(address _newLendingPool) external onlyOwner notPaused {
        lendingPoolAddress = _newLendingPool;
    }

    function setEmergencyStop(bool _emergencyStop) external onlyOwner {
        emergencyStop = _emergencyStop;
    }

    function setMaxSlippagePercentage(uint256 _maxSlippagePercentage) external onlyOwner {
        require(_maxSlippagePercentage <= 5, "Slippage percentage cannot exceed 5%");
        maxSlippagePercentage = _maxSlippagePercentage;
    }

    // Function to perform an arbitrage action using Aave flash loan
    function performArbitrage() external onlyOwner notPaused {
        require(block.timestamp < block.timestamp.add(ARBITRAGE_WINDOW), "Arbitrage window closed");

        // Interact with the external Token contract using the interface
        TokenInterface token = TokenInterface(tokenAddress);
        uint256 initialBalance = token.balanceOf(address(this));

        // Execute arbitrage between Uniswap and external platforms
        executeArbitrage(initialBalance);

        // Example: Transfer remaining tokens to the YieldExchange contract
        uint256 finalBalance = token.balanceOf(address(this));
        uint256 profit = finalBalance.sub(initialBalance);

        // Repay flash loan and return profit to the owner
        repayFlashLoanAndReturnProfit(profit);
    }

    // Internal function to execute arbitrage between Uniswap and external platforms
    function executeArbitrage(uint256 initialBalance) internal {
        // Specify token paths for Uniswap
        address[] memory pathUniswap = new address[](2);
        pathUniswap[0] = tokenAddress;
        pathUniswap[1] = address(this);

        // Interact with Uniswap to get expected output amount
        uint[] memory amountsUniswap = UniswapV2Router(uniswapRouterAddress).getAmountsOut(1e18, pathUniswap);
        uint256 expectedOutputUniswap = amountsUniswap[1];

        // Calculate slippage
        uint256 slippage = expectedOutputUniswap.mul(maxSlippagePercentage).div(100);

        // Arbitrage condition: If Uniswap has a better price (considering slippage)
        if (expectedOutputUniswap.add(slippage) > initialBalance) {
            // Execute swap on Uniswap
            uint256 amountOutMin = expectedOutputUniswap.sub(slippage);
            UniswapV2Router(uniswapRouterAddress).swapExactTokensForTokens(
                1e18,
                amountOutMin,
                pathUniswap,
                address(this),
                block.timestamp
            );
        }
        // Add more external platforms and logic as needed
    }

    // Internal function to repay flash loan and return profit to the owner
    function repayFlashLoanAndReturnProfit(uint256 profit) internal {
        // Interact with the Aave lending pool using the interface
        ILendingPool lendingPool = ILendingPool(lendingPoolAddress);

        // Define flash loan parameters
        address[] memory assets = new address[](1);
        assets[0] = tokenAddress;
        uint256[] memory amounts = new uint256[](1);
        amounts[0] = profit;
        uint256[] memory modes = new uint256[](1);
        modes[0] = 0; // 0 for no debt
        address onBehalfOf = address(this);
        bytes memory params = abi.encode(profit);

        // Execute flash loan repayment
        lendingPool.flashLoan(onBehalfOf, assets, amounts, modes, address(this), params, 0);
    }

    // Callback function to be executed by Aave after the flash loan repayment
    function executeArbitrageWithFlashLoan(uint256 profit) external {
        // Additional risk management logic can be added here if needed

        // Example: Transfer profit to the owner
        TokenInterface token
2

Since I am new to this, I spent days going back and forth with the help of AI and going through several tweeks. I have not tested it yet on the testnet but I felt a review is still worth it.

4

As I checked your smart contract, it seems arbitrage bot contract.
And I couldn't see whole smart contract.
Could you share your codebase correctly?

5

The smart contract is well-structured with key safety measures in place. However, there are some issues that need attention: timestamp handling could be simplified, profit calculation may not fully account for fees, and certain functions are incomplete. Additionally, the contract lacks detailed error handling. Before deployment, it’s recommended to complete the unfinished logic, enhance error checks, optimize for gas efficiency, and consider a professional security audit to ensure reliability and security.