/*
   BINGO ERC20 Token - Play Bingo game directly in Telegram

                                        ,********************,                  
                                     ,..,   #%#.          /%%/  ..              
                                    ,    ,. /&%%&*        .%%%%%  ,             
                                  .       .,                       ..           
                                 *          ,                        ,          
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                              ,                /   ###*          ,##(.  ,       
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                           .         /%%(         (.                      /.    
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                            .         .,         /  (%%%&.        ,%%%%#  ,     
                             .,                 ,  ,%%(,          #&#*  ,.      
                               ,              *          ,/(,          ,        
                             ,,   .*        .*         &%%%%,        .          
                         *.            ,,  *.                       *           
                    .,                     .*&%%%&         /%%%%* ..            
                ,.                             .,.        ,%%#*  ,              
            .,               .&%%%&(                /.........,.                
           ,#,/                *(/.               ,*  ,                         
           ,      ,,                          *   ..  .                         
           , .&%%/    ,*                 ,,.    /%%%* .                         
           ,  .%%%*       ,,.        ,,         %%%.  .                         
           ,                  .%&&#                   .                         
           ,                    ,,                    .                         
           ,                    .         *%%&.       .                         
           ,                    .        *%%%*        .                         
           ,                    .                     .                         
            ,                   .                    ,                          
              ,,           (,   .    #%(          *                             
                  .,      *%%%( .  /%%%/     ..                                 
                      .,.  .%&# .  ,#(   .,                                     
                           ,.   ..   ,.    

   Telegram:  https://t.me/bingo_token_game_bot
   Twitter/X: https://twitter.com/bingoerc20
   Docs:      https://bingobot.gitbook.io/bingo/
*/
// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

/**
 * @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;
    }
}

/**
 * @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.
 *
 * By default, the owner account will be the one that deploys the contract. 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;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @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 {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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 {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        _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);
    }
}

// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

/**
 * @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);
}

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 amount
    );

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(string memory _name, string memory _symbol, uint8 _decimals) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(
        address spender,
        uint256 amount
    ) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max)
            allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(
                recoveredAddress != address(0) && recoveredAddress == owner,
                "INVALID_SIGNER"
            );

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return
            block.chainid == INITIAL_CHAIN_ID
                ? INITIAL_DOMAIN_SEPARATOR
                : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256(
                        "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
                    ),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint
    );

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(
        address tokenA,
        address tokenB
    ) external view returns (address pair);

    function allPairs(uint) external view returns (address pair);

    function allPairsLength() external view returns (uint);

    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint);

    function balanceOf(address owner) external view returns (uint);

    function allowance(
        address owner,
        address spender
    ) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);

    function transfer(address to, uint value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint);

    function permit(
        address owner,
        address spender,
        uint value,
        uint deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(
        address indexed sender,
        uint amount0,
        uint amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);

    function factory() external view returns (address);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function getReserves()
        external
        view
        returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

    function price0CumulativeLast() external view returns (uint);

    function price1CumulativeLast() external view returns (uint);

    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);

    function burn(address to) external returns (uint amount0, uint amount1);

    function swap(
        uint amount0Out,
        uint amount1Out,
        address to,
        bytes calldata data
    ) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
        returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function swapTokensForExactETH(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapETHForExactTokens(
        uint amountOut,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function quote(
        uint amountA,
        uint reserveA,
        uint reserveB
    ) external pure returns (uint amountB);

    function getAmountOut(
        uint amountIn,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountOut);

    function getAmountIn(
        uint amountOut,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountIn);

    function getAmountsOut(
        uint amountIn,
        address[] calldata path
    ) external view returns (uint[] memory amounts);

    function getAmountsIn(
        uint amountOut,
        address[] calldata path
    ) external view returns (uint[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    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;
}

/**
 * @title BingoGame
 * @dev Betting token for Bingo Game
 */
contract BingoTokenContract is Ownable, ERC20 {
    IUniswapV2Router02 public router;
    IUniswapV2Factory public factory;
    IUniswapV2Pair public pair;

    uint private constant INITIAL_SUPPLY = 100_000_000 * 10 ** 8;

    // Percent of the initial supply that will go to the LP
    uint constant LP_BPS = 9000;

    // Percent of the initial supply that will go to marketing
    uint constant MARKETING_BPS = 10_000 - LP_BPS;

    //
    // The tax to deduct, in basis points
    //
    uint public buyTaxBps = 500;
    uint public sellTaxBps = 500;
    //
    bool isSellingCollectedTaxes;

    event AntiBotEngaged();
    event AntiBotDisengaged();
    event StealthLaunchEngaged();

    address public bingoContractAddress;

    bool public isLaunched;

    address public gameFeeWallet;
    address public marketingWallet;
    address public revenueWallet;

    bool public engagedOnce;
    bool public disengagedOnce;

    constructor() ERC20("BINGO Game Betting Token", "BINGO", 8) {
        if (isGoerli()) {
            router = IUniswapV2Router02(
                0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
            );
        } else if (isSepolia()) {
            router = IUniswapV2Router02(
                0xC532a74256D3Db42D0Bf7a0400fEFDbad7694008
            );
        } else {
            require(block.chainid == 1, "expected mainnet");
            router = IUniswapV2Router02(
                0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
            );
        }
        factory = IUniswapV2Factory(router.factory());

        // Approve infinite spending by DEX, to sell tokens collected via tax.
        allowance[address(this)][address(router)] = type(uint).max;
        emit Approval(address(this), address(router), type(uint).max);

        isLaunched = false;
    }

    modifier lockTheSwap() {
        isSellingCollectedTaxes = true;
        _;
        isSellingCollectedTaxes = false;
    }

    modifier onlyTestnet() {
        require(isTestnet(), "not testnet");
        _;
    }

    receive() external payable {}

    fallback() external payable {}

    function burn(uint amount) external {
        _burn(msg.sender, amount);
    }

    /**
     * @dev Allow minting on testnet so I don't have to deal with
     * buying from Uniswap.
     * @param amount the number of tokens to mint
     */
    function mint(uint amount) external onlyTestnet {
        _mint(address(msg.sender), amount);
    }

    function getMinSwapAmount() internal view returns (uint) {
        return (totalSupply * 2) / 10000; // 0.02%
    }

    function isGoerli() public view returns (bool) {
        return block.chainid == 5;
    }

    function isSepolia() public view returns (bool) {
        return block.chainid == 11155111;
    }

    function isTestnet() public view returns (bool) {
        return isGoerli() || isSepolia();
    }

    function enableAntiBotMode() public onlyOwner {
        require(!engagedOnce, "this is a one shot function");
        engagedOnce = true;
        buyTaxBps = 1000;
        sellTaxBps = 1000;
        emit AntiBotEngaged();
    }

    function disableAntiBotMode() public onlyOwner {
        require(!disengagedOnce, "this is a one shot function");
        disengagedOnce = true;
        buyTaxBps = 500;
        sellTaxBps = 500;
        emit AntiBotDisengaged();
    }

    /**
     * @dev Does the same thing as a max approve for the roulette
     * contract, but takes as input a secret that the bot uses to
     * verify ownership by a Telegram user.
     * @param secret The secret that the bot is expecting.
     * @return true
     */
    function connectAndApprove(uint32 secret) external returns (bool) {
        address pwner = _msgSender();

        allowance[pwner][bingoContractAddress] = type(uint).max;
        emit Approval(pwner, bingoContractAddress, type(uint).max);

        return true;
    }

    function setBignoContractAddress(address a) public onlyOwner {
        require(a != address(0), "null address");
        bingoContractAddress = a;
    }

    function setGameFeeWallet(address wallet) public onlyOwner {
        require(wallet != address(0), "null address");
        gameFeeWallet = wallet;
    }

    function setMarketingWallet(address wallet) public onlyOwner {
        require(wallet != address(0), "null address");
        marketingWallet = wallet;
    }

    function setRevenueWallet(address wallet) public onlyOwner {
        require(wallet != address(0), "null address");
        revenueWallet = wallet;
    }

    function stealthLaunch() external payable onlyOwner {
        require(!isLaunched, "already launched");
        require(gameFeeWallet != address(0), "null address");
        require(marketingWallet != address(0), "null address");
        require(revenueWallet != address(0), "null address");
        require(bingoContractAddress != address(0), "null address");
        isLaunched = true;

        _mint(address(this), (INITIAL_SUPPLY * LP_BPS) / 10_000);

        router.addLiquidityETH{value: msg.value}(
            address(this),
            balanceOf[address(this)],
            0,
            0,
            owner(),
            block.timestamp
        );

        pair = IUniswapV2Pair(factory.getPair(address(this), router.WETH()));

        _mint(marketingWallet, (INITIAL_SUPPLY * MARKETING_BPS) / 10_000);

        require(totalSupply == INITIAL_SUPPLY, "numbers don't add up");

        // So I don't have to deal with Uniswap when testing
        if (isTestnet()) {
            _mint(address(msg.sender), 10_000 * 10 ** decimals);
        }

        emit StealthLaunchEngaged();
    }

    /**
     * @dev Calculate the amount of tax to apply to a transaction.
     * @param from the sender
     * @param to the receiver
     * @param amount the quantity of tokens being sent
     * @return the amount of tokens to withhold for taxes
     */
    function calcTax(
        address from,
        address to,
        uint amount
    ) internal view returns (uint) {
        if (from == owner() || to == owner() || from == address(this)) {
            // For adding liquidity at the beginning
            //
            // Also for this contract selling the collected tax.
            return 0;
        } else if (from == address(pair)) {
            // Buy from DEX, or adding liquidity.
            return (amount * buyTaxBps) / 10_000;
        } else if (to == address(pair)) {
            // Sell from DEX, or removing liquidity.
            return (amount * sellTaxBps) / 10_000;
        } else {
            // Sending to other wallets (e.g. OTC) is tax-free.
            return 0;
        }
    }

    /**
     * @dev Sell the balance accumulated from taxes.
     */
    function sellCollectedTaxes() internal lockTheSwap {
        // Of the remaining tokens, set aside 2% of the tokens to LP,
        // swap the rest for ETH. LP the tokens with all of the ETH
        // (only enough ETH will be used to pair with the original 2%
        // of tokens). Send the remaining ETH (about 2% the original
        // balance) to 1% marketing wallet

        uint tokensForLiq = balanceOf[address(this)] / 2;
        uint tokensToSwap = balanceOf[address(this)] - tokensForLiq;

        // Sell
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokensToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );

        router.addLiquidityETH{value: address(this).balance}(
            address(this),
            tokensForLiq,
            0,
            0,
            owner(),
            block.timestamp
        );

        gameFeeWallet.call{value: address(this).balance}("");
    }

    /**
     * @dev Transfer tokens from the caller to another address.
     * @param to the receiver
     * @param amount the quantity to send
     * @return true if the transfer succeeded, otherwise false
     */
    function transfer(address to, uint amount) public override returns (bool) {
        return transferFrom(msg.sender, to, amount);
    }

    /**
     * @dev Transfer tokens from one address to another. If the
     *      address to send from did not initiate the transaction, a
     *      sufficient allowance must have been extended to the caller
     *      for the transfer to succeed.
     * @param from the sender
     * @param to the receiver
     * @param amount the quantity to send
     * @return true if the transfer succeeded, otherwise false
     */
    function transferFrom(
        address from,
        address to,
        uint amount
    ) public override returns (bool) {
        if (from != msg.sender) {
            // This is a typical transferFrom

            uint allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

            if (allowed != type(uint).max)
                allowance[from][msg.sender] = allowed - amount;
        }

        // Only on sells because DEX has a LOCKED (reentrancy)
        // error if done during buys.
        //
        // isSellingCollectedTaxes prevents an infinite loop.
        if (
            balanceOf[address(this)] > getMinSwapAmount() &&
            !isSellingCollectedTaxes &&
            from != address(pair) &&
            from != address(this)
        ) {
            sellCollectedTaxes();
        }

        uint tax = calcTax(from, to, amount);
        uint afterTaxAmount = amount - tax;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint value.
        unchecked {
            balanceOf[to] += afterTaxAmount;
        }

        emit Transfer(from, to, afterTaxAmount);

        if (tax > 0) {
            // Use 1% of tax for marketting
            uint marketShare = tax / 5;
            tax -= marketShare;

            unchecked {
                balanceOf[address(this)] += tax;
                balanceOf[marketingWallet] += marketShare;
            }

            // Any transfer to the contract can be viewed as tax
            emit Transfer(from, address(this), tax); //
            emit Transfer(from, marketingWallet, marketShare); //0.5% REV
        }

        return true;
    }
}

/**
 * @title BingoGameContract
 * @dev Store funds for Russian Roulette and distribute the winnings as games finish.
 */
contract BingoGameContract is Ownable {
    address public revenueWallet;

    address public lotteryWallet;

    BingoTokenContract public immutable bettingToken;

    uint256 public immutable minimumBet;

    // The amount to take as revenue, in basis points.
    uint256 public immutable revenueBps;

    // The amount to take as lottery, in basis points.
    uint256 public immutable lotteryBps;

    // The amount to burn forever, in basis points.
    uint256 public immutable burnBps;

    // The amount to progressive pot.
    uint256 public progressivePot;

    // Map Telegram chat IDs to their games.
    mapping(int64 => Game) public games;

    // The Telegram chat IDs for each active game. Mainly used to
    // abort all active games in the event of a catastrophe.
    int64[] public activeTgGroups;

    // Stores the amount each player has bet for a game.
    event Bet(
        int64 tgChatId,
        address player,
        uint16 playerIndex,
        uint256 amount
    );

    // Stores the amount each player wins for a game.
    event Win(
        int64 tgChatId,
        address player,
        uint16 playerIndex,
        uint256 amount
    );

    // Stores the amount the loser lost.
    event Loss(
        int64 tgChatId,
        address player,
        uint16 playerIndex,
        uint256 amount
    );

    // Stores the revenue amount collected by the protocol.
    event Revenue(int64 tgChatId, uint256 amount);

    // Stores the lottery amount collected by the protocol.
    event Lottery(int64 tgChatId, uint256 amount);

    // Stores the amount burned by the protocol.
    event Burn(int64 tgChatId, uint256 amount);

    constructor(
        address payable _bettingToken,
        uint256 _minimumBet,
        uint256 _revenueBps,
        uint256 _lotteryBps,
        uint256 _burnBps,
        address _revenueWallet,
        address _lotteryWallet
    ) {
        revenueWallet = _revenueWallet; //new rev wallet address
        lotteryWallet = _lotteryWallet; //new rev wallet address
        revenueBps = _revenueBps; //400
        burnBps = _burnBps; //200
        lotteryBps = _lotteryBps; // 400
        bettingToken = BingoTokenContract(_bettingToken);
        minimumBet = _minimumBet; //1000
    }

    struct Game {
        uint256 revolverSize; //2-TBD
        uint256 minBet;
        // This is a SHA-256 hash of the random number generated by the bot.

        address[] players;
        uint256[] bets;
        bool inProgress;
        uint16 loser;
        uint16[] winners;
    }

    /**
     * @dev Check if there is a game in progress for a Telegram group.
     * @param _tgChatId Telegram group to check
     * @return true if there is a game in progress, otherwise false
     */
    function isGameInProgress(int64 _tgChatId) public view returns (bool) {
        return games[_tgChatId].inProgress;
    }

    /**
     * @dev Remove a Telegram chat ID from the array.
     * @param _tgChatId Telegram chat ID to remove
     */
    function removeTgId(int64 _tgChatId) internal {
        for (uint256 i = 0; i < activeTgGroups.length; i++) {
            if (activeTgGroups[i] == _tgChatId) {
                activeTgGroups[i] = activeTgGroups[activeTgGroups.length - 1];
                activeTgGroups.pop();
            }
        }
    }

    /**
     * @dev Create a new game. Transfer funds into escrow.
     * @param _tgChatId Telegram group of this game
     * @param _revolverSize number of chambers in the revolver
     * @param _minBet minimum bet to play
     * @param _players participating players
     * @param _bets each player's bet
     * @return The updated list of bets.
     */
    function newGame(
        int64 _tgChatId,
        uint256 _revolverSize,
        uint256 _minBet,
        address[] memory _players,
        uint256[] memory _bets
    ) public onlyOwner returns (uint256[] memory) {
        require(_revolverSize >= 2, "Revolver size too small");
        require(
            _players.length <= _revolverSize,
            "Too many players for this size revolver"
        );
        require(_minBet >= minimumBet, "Minimum bet too small");
        require(
            _players.length == _bets.length,
            "Players/bets length mismatch"
        );
        require(_players.length > 1, "Not enough players");
        require(
            !isGameInProgress(_tgChatId),
            "There is already a game in progress"
        );

        // The bets will be capped so you can only lose what other
        // players bet. The updated bets will be returned to the
        // caller.
        //
        // O(N) by doing a prepass to sum all the bets in the
        // array. Use the sum to modify one bet at a time. Replace
        // each bet with its updated value.
        uint256 betTotal = 0;
        for (uint16 i = 0; i < _bets.length; i++) {
            require(_bets[i] >= _minBet, "Bet is smaller than the minimum");
            betTotal += _bets[i];
        }
        for (uint16 i = 0; i < _bets.length; i++) {
            betTotal -= _bets[i];
            if (_bets[i] > betTotal) {
                _bets[i] = betTotal;
            }
            betTotal += _bets[i];

            require(
                bettingToken.allowance(_players[i], address(this)) >= _bets[i],
                "Not enough allowance"
            );
            bool isSent = bettingToken.transferFrom(
                _players[i],
                address(this),
                _bets[i]
            );
            require(isSent, "Funds transfer failed");

            emit Bet(_tgChatId, _players[i], i, _bets[i]);
        }

        Game memory g;
        g.revolverSize = _revolverSize;
        g.minBet = _minBet;
        g.players = _players;
        g.bets = _bets;
        g.inProgress = true;

        games[_tgChatId] = g;
        activeTgGroups.push(_tgChatId);

        return _bets;
    }

    /**
     * @dev Declare a loser of the game and pay out the winnings.
     * @param _tgChatId Telegram group of this game
     * @param _winners array index of the loser
     * @param _prizes array amount of winners
     *
     * There is also a string array that will be passed in by the bot
     * containing labeled strings, for historical/auditing purposes:
     *
     * beta: The randomly generated number in hex.
     *
     * salt: The salt to append to beta for hashing, in hex.
     *
     * publickey: The VRF public key in hex.
     *
     * proof: The generated proof in hex.
     *
     * alpha: The input message to the VRF.
     */
    function endGame(
        int64 _tgChatId,
        uint16[] memory _winners,
        uint256[] memory _prizes
    ) public onlyOwner {
        int64 tgChatId = _tgChatId;
        Game storage g = games[tgChatId];

        uint256 sumPrizes=0;
        require(
            isGameInProgress(tgChatId),
            "No game in progress for this Telegram chat ID"
        );
        require(_winners.length == _prizes.length, "prize length should be same with winner");
        for (uint16 i = 0; i < _winners.length; i++) {
            require(_winners[i] < g.players.length, "winner index out of range");
            sumPrizes+=_prizes[i];
        }

        g.winners = _winners;
        g.inProgress = false;
        removeTgId(tgChatId);

        // The share of tokens to burn.
        uint256 betTotal = 0;
        for (uint16 i = 0; i < g.players.length; i++) {
            betTotal += g.bets[i];
        }
        if (g.winners.length > 0) {
            uint256 totalPaidWinnings = 0;

            require(
                burnBps + revenueBps + lotteryBps < 10_000,
                "Total fees must be = 100%"
            );

            uint256 burnShare = ((betTotal + progressivePot) * burnBps) /
                10_000; //2% burn

            // The share left for the contract. This is an approximate
            // value. The real value will be whatever is leftover after
            // each winner is paid their share.

            address[] memory winners = new address[](_winners.length);
            for (uint16 i = 0; i < _winners.length; i++) {
                for (uint16 j = 0; j < g.players.length; j++) {
                    if (_winners[i] == j) {
                        winners[i] = g.players[j];
                    }
                }
            }
            bool isSent;
            {
                for (uint16 i = 0; i < g.winners.length; i++) {
                    isSent = bettingToken.transfer(winners[i], _prizes[i]);
                    require(isSent, "Funds transfer failed");

                    emit Win(tgChatId, winners[i], i, _prizes[i]);

                    totalPaidWinnings += _prizes[i];
                }
                    for (uint16 i = 0; i < g.players.length; i++) {
                    uint256 sendAmount=((betTotal+progressivePot)*9000/10000-sumPrizes)/g.players.length;
                    isSent = bettingToken.transfer(g.players[i],sendAmount);
                    require(isSent, "Funds transfer failed");

                    emit Win(tgChatId,g.players[i], i, sendAmount);

                    totalPaidWinnings +=sendAmount;
                }
            }

            bettingToken.burn(burnShare);
            emit Burn(_tgChatId, burnShare);

            uint256 realSumShare = betTotal +
                progressivePot -
                totalPaidWinnings -
                burnShare;
            uint256 realRevenueShare = realSumShare / 2;
            uint256 realLotteryShare = realSumShare - realRevenueShare;
            isSent = bettingToken.transfer(revenueWallet, realRevenueShare);
            require(isSent, "Revenue transfer failed");
            emit Revenue(tgChatId, realRevenueShare);

            isSent = bettingToken.transfer(lotteryWallet, realLotteryShare);
            require(isSent, "Lottery transfer failed");
            emit Lottery(tgChatId, realLotteryShare);

            //require((totalPaidWinnings + burnShare + realRevenueShare+realLotteryShare) ==betTotal, "Calculated winnings do not add up");
            progressivePot = 0;
        } else {
            progressivePot += betTotal;
        }
    }

    /**
     * @dev Abort a game and refund the bets. Use in emergencies
     *      e.g. bot crash.
     * @param _tgChatId Telegram group of this game
     */
    function abortGame(int64 _tgChatId) public onlyOwner {
        require(
            isGameInProgress(_tgChatId),
            "No game in progress for this Telegram chat ID"
        );
        Game storage g = games[_tgChatId];

        for (uint16 i = 0; i < g.players.length; i++) {
            bool isSent = bettingToken.transfer(g.players[i], g.bets[i]);
            require(isSent, "Funds transfer failed");
        }

        g.inProgress = false;
        removeTgId(_tgChatId);
    }

    /**
     * @dev Abort all in progress games.
     */
    function abortAllGames() public onlyOwner {
        // abortGame modifies activeTgGroups with each call, so
        // iterate over a copy
        int64[] memory _activeTgGroups = activeTgGroups;
        for (uint256 i = 0; i < _activeTgGroups.length; i++) {
            abortGame(_activeTgGroups[i]);
        }
    }
}