// File: ScrotoHuntGame.sol



// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.9.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract ScrotoHuntGame {
    address public owner;
    address public tokenAddress;
    uint256 public winningChance;
    uint256 public betAmount;
    uint256 public housePercentage; // Percentage of the bet amount that goes to the house

    event GameResult(
        address indexed player,
        uint256 indexed betAmount,
        bool indexed win,
        uint256 userId
    );

    constructor(
        address _tokenAddress,
        uint256 _winningChance,
        uint256 _betAmount,
        uint256 _housePercentage
    ) {
        owner = msg.sender;
        tokenAddress = _tokenAddress;
        winningChance = _winningChance;
        betAmount = _betAmount;
        housePercentage = _housePercentage;
    }

    modifier onlyOwner() {
        require(
            msg.sender == owner,
            "Only the contract owner can call this function"
        );
        _;
    }

    function playGame(uint256 userId) external {
        IERC20 token = IERC20(tokenAddress);
        uint256 tokenBalance = token.balanceOf(msg.sender);
        require(tokenBalance >= betAmount, "Insufficient token balance");

        uint256 houseAmount = (betAmount * housePercentage) / 100;

        require(
            token.transferFrom(msg.sender, address(this), betAmount),
            "Token transfer failed"
        );

        uint256 randomNumber = generateRandomNumber();

        bool win = randomNumber < winningChance;
        uint256 playerAmount = win ? betAmount * 2 - houseAmount : 0;

        if (win) {
            require(
                token.transfer(msg.sender, playerAmount),
                "Token transfer to player failed"
            );
        }

        emit GameResult(msg.sender, betAmount, win, userId);
    }

    function generateRandomNumber() internal view returns (uint256) {
        uint256 dummy = 0; // Adding a dummy variable
        dummy = uint256(
            keccak256(
                abi.encodePacked(
                    block.timestamp,
                    block.prevrandao,
                    msg.sender,
                    dummy
                )
            )
        );
        return dummy % 100;
    }

    function setBetAmount(uint256 _betAmount) external onlyOwner {
        betAmount = _betAmount;
    }

    function setWinningChance(uint256 _winningChance) external onlyOwner {
        winningChance = _winningChance;
    }

    function withdrawTokens(address _teamWallet) external onlyOwner {
        IERC20 token = IERC20(tokenAddress);
        uint256 contractBalance = token.balanceOf(address(this));
        require(contractBalance > 0, "No tokens to withdraw");

        require(
            token.transfer(_teamWallet, contractBalance),
            "Token transfer to team wallet failed"
        );
    }

    function setHousePercentage(uint256 _housePercentage) external onlyOwner {
        housePercentage = _housePercentage;
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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);
}