// SPDX-License-Identifier: MIT
pragma solidity ^0.8.21;

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

contract NArbitrage is Ownable {
    address public navisTokenAddress;
    address public nFarmingAddress;
    address public nSwapAddress;
    address public mSWAddress;

    event ArbitrageTradeExecuted(
        address indexed trader,
        string buyExchange,
        string sellExchange,
        uint256 buyPrice,
        uint256 sellPrice,
        uint256 profit
    );

    mapping(address => bool) public hasUserReceivedGuide;

    constructor(
        address _navisTokenAddress,
        address _nFarmingAddress,
        address _nSwapAddress,
        address _mSWAddress
    ) Ownable() {
        require(_navisTokenAddress != address(0), "Invalid NAVIS token address");
        require(_nFarmingAddress != address(0), "Invalid NFarming address");
        require(_nSwapAddress != address(0), "Invalid NSwap address");
        require(_mSWAddress != address(0), "Invalid MSW address");

        navisTokenAddress = _navisTokenAddress;
        nFarmingAddress = _nFarmingAddress;
        nSwapAddress = _nSwapAddress;
        mSWAddress = _mSWAddress;
    }

    function hasReceivedArbitrageGuide(address user) external view returns (bool) {
        return hasUserReceivedGuide[user];
    }

    function provideArbitrageGuide() external {
        require(!hasUserReceivedGuide[msg.sender], "Guide already provided");

        // Replace with your DApp's specific logic for providing the arbitrage guide
        // For example, updating user profile status in a centralized system.

        // Pseudo code:
        // UserManagementSystem.updateArbitrageGuideStatus(msg.sender);

        hasUserReceivedGuide[msg.sender] = true;

        // Emit an event or perform any other relevant action
    }

    function getUserLiquidity(address user) external view returns (uint256) {
        IERC20 navisToken = IERC20(navisTokenAddress);
        return navisToken.balanceOf(user);
    }

    function executeArbitrageTrade(
        string memory buyExchange,
        string memory sellExchange,
        uint256 buyPrice,
        uint256 sellPrice
    ) external onlyOwner {
        require(bytes(buyExchange).length > 0 && bytes(sellExchange).length > 0, "Invalid exchange names");
        require(buyPrice > 0 && sellPrice > 0, "Invalid prices");

        // Replace the following with your DApp's specific logic
        // - Check user permissions
        // - Interact with your DApp's contracts
        // - Execute arbitrage trade

        uint256 userLiquidity = getUserLiquidity(msg.sender);
        require(userLiquidity >= buyPrice, "Insufficient NAVIS liquidity for arbitrage");

        // Your DApp-specific logic for executing arbitrage trade
        // For example, interacting with nSwap and updating relevant contract states.

        uint256 profit = calculateArbitrageProfit(buyPrice, sellPrice);

        emit ArbitrageTradeExecuted(msg.sender, buyExchange, sellExchange, buyPrice, sellPrice, profit);
    }

    function calculateArbitrageProfit(uint256 buyPrice, uint256 sellPrice) internal pure returns (uint256) {
        require(buyPrice < sellPrice, "Invalid prices for arbitrage");
        return sellPrice - buyPrice;
    }
}