/**
 Telegram: https://t.me/XigouInu
 Twitter: https://twitter.com/xigouinu
 Website: https://xigouinu.io
*/

//
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

/* solhint-disable */

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;
    }
}

interface ERC20 {
    function totalSupply() external view returns (uint256);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function getOwner() external view returns (address);
    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);
}

abstract contract Ownable {
    address internal owner;
    constructor(address _owner) {
        owner = _owner;
    }
    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER"); _;
    }
    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }
    function renounceOwnership() public onlyOwner {
        owner = address(0);
        emit OwnershipTransferred(address(0));
    }  
    event OwnershipTransferred(address owner);
}

interface IDEXFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IDEXRouter {
    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 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;
}

contract XigouInu is ERC20, Ownable {
    using SafeMath for uint256;
    address public routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address public DEAD = 0x000000000000000000000000000000000000dEaD;

    string public constant _name = "Xigou Inu";
    string public constant _symbol = "Xigou";
    uint8 public constant _decimals = 9;

    uint256 public _totalSupply = 1_000_000_000 * (10 ** _decimals);
    uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;

    mapping(address => uint256) public _balances;
    mapping(address => mapping(address => uint256)) public _allowances;

    mapping(address => bool) public isFeeExempt;
    mapping(address => bool) public isTxLimitExempt;
    mapping(address => bool) public _isBlackListed;

    bool public isTradingEnabled;
    uint256 public startTime;
    uint256 public constant BLACKLIST_TRADE_UNTIL = 30 seconds;

    uint256 public liquidityFee = 20;
    uint256 public marketingFee = 50;
    uint256 public totalFee = liquidityFee + marketingFee;
    uint256 public feeDenominator = 1000;

    address private marketingFeeReceiver = 0x82946f878Af1f4933063364e4535D7DB7f56ef0C;

    IDEXRouter public router;
    address public pair;

    bool public swapEnabled = true;
    uint256 public swapThreshold = (_totalSupply / 1000) * 2; //
    bool internal inSwap;

    modifier swapping() {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor() Ownable(msg.sender) {
        router = IDEXRouter(routerAdress);
        pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
        _allowances[address(this)][address(router)] = type(uint256).max;

        isFeeExempt[marketingFeeReceiver] = true;
        isTxLimitExempt[owner] = true;
        isTxLimitExempt[marketingFeeReceiver] = true;
        isTxLimitExempt[DEAD] = true;

        _balances[owner] = _totalSupply;
        emit Transfer(address(0), owner, _totalSupply);
    }

    receive() external payable {}

    function totalSupply() external view override returns (uint256) {
        return _totalSupply;
    }

    function decimals() external pure override returns (uint8) {
        return _decimals;
    }

    function symbol() external pure override returns (string memory) {
        return _symbol;
    }

    function name() external pure override returns (string memory) {
        return _name;
    }

    function getOwner() external view override returns (address) {
        return owner;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function allowance(address holder, address spender) external view override returns (uint256) {
        return _allowances[holder][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function approveMax(address spender) external returns (bool) {
        return approve(spender, type(uint256).max);
    }

    function transfer(address recipient, uint256 amount) external override returns (bool) {
        return _transferFrom(msg.sender, recipient, amount);
    }

    function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
        if (_allowances[sender][msg.sender] != type(uint256).max) {
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
        }

        return _transferFrom(sender, recipient, amount);
    }

    function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
        if (inSwap) {
            return _basicTransfer(sender, recipient, amount);
        }

        if (recipient != pair && recipient != DEAD) {
            require(
                isTxLimitExempt[recipient] || _balances[recipient] + amount <= _maxWalletAmount,
                "Transfer amount exceeds the bag size."
            );
        }

        require(!_isBlackListed[sender] && !_isBlackListed[recipient], "Account is blacklisted");

        if (sender != owner && recipient != owner) {
            require(isTradingEnabled, "Trading not enabled yet");
            if (block.timestamp < startTime + BLACKLIST_TRADE_UNTIL) {
                if (sender == pair) {
                    _isBlackListed[recipient] = true;
                }
                if (recipient == pair) {
                    _isBlackListed[sender] = true;
                }
            }
        }

        if (shouldSwapBack()) {
            swapBack();
        }

        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");

        uint256 amountReceived = shouldTakeFee(sender) ? takeFee(sender, amount) : amount;
        _balances[recipient] = _balances[recipient].add(amountReceived);

        emit Transfer(sender, recipient, amountReceived);
        return true;
    }

    function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
        return true;
    }

    function shouldTakeFee(address sender) internal view returns (bool) {
        return !isFeeExempt[sender];
    }

    function takeFee(address sender, uint256 amount) internal returns (uint256) {
        uint256 feeAmount = amount.mul(totalFee).div(feeDenominator);
        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);
        return amount.sub(feeAmount);
    }

    function shouldSwapBack() internal view returns (bool) {
        return msg.sender != pair && !inSwap && swapEnabled && _balances[address(this)] >= swapThreshold;
    }

    function swapBack() internal swapping {
        uint256 contractTokenBalance = swapThreshold;
        uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2);
        uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();

        uint256 balanceBefore = address(this).balance;

        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );
        uint256 amountETH = address(this).balance.sub(balanceBefore);
        uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
        uint256 amountETHLiquidity = amountETH.mul(liquidityFee).div(totalETHFee).div(2);
        uint256 amountETHMarketing = amountETH.mul(marketingFee).div(totalETHFee);

        (bool MarketingSuccess /* bytes memory data */, ) = payable(marketingFeeReceiver).call{
            value: amountETHMarketing,
            gas: 30000
        }("");
        require(MarketingSuccess, "receiver rejected ETH transfer");

        if (amountToLiquify > 0) {
            router.addLiquidityETH{ value: amountETHLiquidity }(
                address(this),
                amountToLiquify,
                0,
                0,
                marketingFeeReceiver,
                block.timestamp
            );
            emit AutoLiquify(amountETHLiquidity, amountToLiquify);
        }
    }

    function buyTokens(uint256 amount, address to) internal swapping {
        address[] memory path = new address[](2);
        path[0] = router.WETH();
        path[1] = address(this);

        router.swapExactETHForTokensSupportingFeeOnTransferTokens{ value: amount }(0, path, to, block.timestamp);
    }

    function clearStuckBalance() external {
        payable(marketingFeeReceiver).transfer(address(this).balance);
    }

    function setWalletLimit(uint256 amountPercent) external onlyOwner {
        _maxWalletAmount = (_totalSupply * amountPercent) / 1000;
    }

    function setFee(uint256 _liquidityFee, uint256 _marketingFee) external onlyOwner {
        liquidityFee = _liquidityFee;
        marketingFee = _marketingFee;
        totalFee = liquidityFee + marketingFee;
    }

    function enableTrading() external onlyOwner {
        require(startTime == 0, "Trading already enabled");
        isTradingEnabled = true;
        startTime = block.timestamp;
    }

    event AutoLiquify(uint256 amountETH, uint256 amountBOG);
}