/**
 * GAMBLX - The world first positive RTP (Return-To-Player) decentralized casino!
 *
 * Unlike traditional casinos with a house edge, at GAMBLX, our unique game mechanics system eliminates the house edge. This means (f.e.) you can enjoy up to an 80% chance to win X2 bets, depending on the round. Imagine the possibilities - with a total pool of $2800, a mere $40 bet can grant you a 50% chance to win, particularly during rounds with high bonus pools and smaller bets. Say goodbye to always losing – at GAMBLX, you have the advantage!
 * 50% of token volume tax funds are automatically added to jackpot rounds as bonus pools.
 * Additionally, 30% of total casino revenue is shared randomly into game pools, and 10% of casino revenue is used for token buyback at random interval.
 * The token is deflationary, with 5% of tokens from tax volume being burned automatically.
 * Holders of the token become part owners of the casino, receiving 30% of casino revenue and 20% of token tax fees through the Revenue Share Program.
 * Return to Player (RTP) can reach up to +1000%, depending on the round and bonus pool. Players can even apply their skills to calculate the best timing to join game.
 * Fully decentralized, winners for each round are automatically chosen using our smart contract provable fair system.
 * 10% of each game pool contributes to casino revenue, and 30% of this revenue is shared with token holders through the Revenue Share system.
 *
 *
 * At GamblX, we believe in provably fair gaming. Every game, bet, and winner can be verified, as our smart contract automatically selects winners at the end of each game, leaving no room for human intervention.
 * As we expand our offerings, players can expect a diverse range of games designed to cater to all interests and preferences. From classic casino games with a blockchain twist to groundbreaking and unique creations, each game promises a seamless and transparent gaming experience.
 * Our new games will feature provably fair mechanics, ensuring that players can verify the fairness of every outcome independently. The blockchain's decentralized nature provides added security and trust, ensuring that the integrity of the games remains uncompromised.
 * Whether you are a seasoned gambler or a newcomer to the world of blockchain gaming, our upcoming releases will captivate and entertain you. Prepare to embark on an unforgettable journey, where thrilling gameplay and blockchain technology converge to create an unparalleled gaming adventure.
 * GamblX invites players to join our revolution in the gambling world, where trust, fairness, and exhilarating gaming experiences converge. Embrace the advantage and explore the endless possibilities of winning with GamblX.
 *
 *
 * Website: https://gamblx.com
 * Twitter: https://twitter.com/gamblx_com
 * Telegram: https://t.me/gamblx_com
 * Medium: https://medium.com/@gamblx/
 * Discord: https://discord.com/invite/bFfwwTYE
 * Docs: https://gamblx.gitbook.io/info
 * 
 * 
*/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.20;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

interface Jackpot {
    function addBonus() external payable;  
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }

}

contract Ownable is Context {
    address private _owner;
	address private _jackpotmanager;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
		_jackpotmanager = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    function jackpotmanager() public view returns (address) {
        return _jackpotmanager;
    }
	
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
	
	modifier onlyJackpotManager() {
        require(_jackpotmanager == _msgSender(), "Ownable: caller is not the jackpot manager");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
	
	function renounceJackpotManager() public virtual onlyJackpotManager {
        _jackpotmanager = address(0);
    }

}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

contract GAMBLX is Context, IERC20, Ownable {
    using SafeMath for uint256;
	
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    address payable private _taxWallet;
    uint256 firstBlock;

    uint256 private _initialBuyTax=17;
    uint256 private _initialSellTax=17;
    uint256 private _finalBuyTax=5;
    uint256 private _finalSellTax=5;
    uint256 private _reduceBuyTaxAt=23;
    uint256 private _reduceSellTaxAt=23;
    uint256 private _preventSwapBefore=23;
    uint256 private _buyCount=0;

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 100000000 * 10**_decimals;
    string private constant _name = unicode"GAMBLX";
    string private constant _symbol = unicode"GAMBLX";
    uint256 public _maxTxAmount =   1000000 * 10**_decimals;
    uint256 public _maxWalletSize = 1000000 * 10**_decimals;
    uint256 public _taxSwapThreshold= 1000000 * 10**_decimals;
    uint256 public _maxTaxSwap= 1000000 * 10**_decimals;

    IUniswapV2Router02 private uniswapV2Router;
    address private uniswapV2Pair;
    bool private tradingOpen;
    bool private inSwap = false;
    bool private swapEnabled = false;
	
	address jackpotAddress;
	
	uint256 public totalTokensBurned = 0;

    event MaxTxAmountUpdated(uint _maxTxAmount);
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () {

        _taxWallet = payable(_msgSender());
        _balances[_msgSender()] = _tTotal;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_taxWallet] = true;
        
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount=0;
        if (from != owner() && to != owner()) {
            taxAmount = amount.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:_initialBuyTax).div(100);

            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");

                if (firstBlock + 3  > block.number) {
                    require(!isContract(to));
                }
                _buyCount++;
            }

            if (to != uniswapV2Pair && ! _isExcludedFromFee[to]) {
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
            }

            if(to == uniswapV2Pair && from!= address(this) ){
                taxAmount = amount.mul((_buyCount>_reduceSellTaxAt)?_finalSellTax:_initialSellTax).div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && to   == uniswapV2Pair && swapEnabled && contractTokenBalance>_taxSwapThreshold && _buyCount>_preventSwapBefore) {
			    uint taxtokensburned;
				taxtokensburned = contractTokenBalance.div(20); //5% of tax burned
				totalTokensBurned += taxtokensburned;
                _balances[address(this)]=_balances[address(this)].sub(taxtokensburned);
                _balances[address(0xdead)]=_balances[address(0xdead)].add(taxtokensburned);
                emit Transfer(address(this), address(0xdead), taxtokensburned);
				//burn tokens from tax
				uint256 contractTokenBalance2 = balanceOf(address(this));
                swapTokensForEth(min(amount,min(contractTokenBalance2,_maxTaxSwap)));
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
					Jackpot(jackpotAddress).addBonus{value: address(this).balance.div(2)}(); //send 50% to bonus pool jackpot
                    sendETHToFee(address(this).balance); //send 50% to tax wallet
                }
            }
        }

        if(taxAmount>0){
          _balances[address(this)]=_balances[address(this)].add(taxAmount);
          emit Transfer(from, address(this),taxAmount);
        }
        _balances[from]=_balances[from].sub(amount);
        _balances[to]=_balances[to].add(amount.sub(taxAmount));
        emit Transfer(from, to, amount.sub(taxAmount));
    }


    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a>b)?b:a;
    }

    function isContract(address account) private view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function setJackpotAddress(address _jackpotAddress) external onlyJackpotManager {
       jackpotAddress = _jackpotAddress;
    }
	
    function removeLimits() external onlyOwner{
        _maxTxAmount = _tTotal;
        _maxWalletSize=_tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

    function sendETHToFee(uint256 amount) private {
        _taxWallet.transfer(amount);
    }
	
    function openTrading() external onlyOwner() {
        require(!tradingOpen,"trading is already open");
        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(uniswapV2Router), _tTotal);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
        swapEnabled = true;
        tradingOpen = true;
        firstBlock = block.number;
    }

    receive() external payable {}
}