/**𝓒𝓐𝓢𝓢𝓘𝓔 𝓐𝓘 𝓑𝓞𝓣 𝓘𝓢 𝓑𝓡𝓘𝓝𝓖𝓘𝓝𝓖 𝓕𝓛𝓔𝓧𝓘𝓑𝓘𝓛𝓘𝓣𝓨 𝓐𝓝𝓓 𝓢𝓟𝓔𝓔𝓓 𝓘𝓝𝓣𝓞 𝓣𝓗𝓔 𝓒𝓡𝓨𝓟𝓣𝓞 𝓢𝓟𝓐𝓒𝓔.

The most important tool in crypto

If you've ever tried to buy crypto at an IDO or token launch and wondered why you
 always buy high and can never get the lowest price, the truth is you never will. 
 It's not possible. Unless you own a SNIPER BOT.

Cassie AI is building a top tier sniper that snipes any contract method or DEX from 
the mempool

-based on artificial intelligence, machine learning
-increase trading efficiency and profitability
-eliminates the possibility of human errors and improves trading speed
-own node

Additional features of CASSIE AI

  - P2E Cassie Bot racing game 
  - Special NFTs for holders 

Telegram
https://t.me/CASSIE_AI_PORTAL

Medium Article : https://medium.com/@cassieaibot/cassie-ai-bot-erc-20-788cb549037f
 *
*/



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

abstract contract Context {

    function _msgSender() internal view virtual returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view virtual returns (bytes memory) {
      
        return msg.data;
    }
}

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);
}

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;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }   
    
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0x000000000000000000000000000000000000dEaD));
        _owner = address(0x000000000000000000000000000000000000dEaD);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }

}

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 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 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;
}

contract CassieAIBOT is Context, IERC20, Ownable {
    
    using SafeMath for uint256;
    
    string private _name = "Cassie Ai Bot";
    string private _symbol = "cAi";
    uint8 private _decimals = 18;

    address payable public marketingWallet = payable(0x267d85377F4A4E7ceEF903a07bD4fb6bA5429672);
    address payable public DeveloperWallet = payable(0x19361523a38107083f8193911d15cc5B404115D2);
    address public liquidityReciever;
    
    address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
    address public immutable zeroAddress = 0x0000000000000000000000000000000000000000;

    mapping (address => uint256) _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    
    mapping (address => bool) public isExcludedFromFee;
    mapping (address => bool) public isMarketPair;
    mapping (address => bool) public blacklist;
    mapping (address => bool) public isWalletLimitExempt;
    mapping (address => bool) public isTxLimitExempt;

    uint256 public _buyLiquidityFee = 0;
    uint256 public _buyMarketingFee = 2;
    uint256 public _buyDeveloperFee = 3;
    
    uint256 public _sellLiquidityFee = 0;
    uint256 public _sellMarketingFee = 30;
    uint256 public _sellDeveloperFee = 20;

    uint256 public _totalTaxIfBuying;
    uint256 public _totalTaxIfSelling;

    uint256 private _totalSupply = 1000000 * 10**_decimals;

    uint256 public minimumTokensBeforeSwap = _totalSupply.mul(1).div(100);   //0.001%

    uint256 public _maxTxAmount =  _totalSupply.mul(3).div(100);  //3%
    uint256 public _walletMax =   _totalSupply.mul(3).div(100);   //3%

    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapPair;
    
    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    bool public swapAndLiquifyByLimitOnly = false;

    bool public checkWalletLimit = true;
    bool public EnableTransactionLimit = true;

    event SwapAndLiquifyEnabledUpdated(bool enabled);

    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
    
    event SwapETHForTokens(
        uint256 amountIn,
        address[] path
    );
    
    event SwapTokensForETH(
        uint256 amountIn,
        address[] path
    );
    
    modifier lockTheSwap {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }
    
    constructor () {
        
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); 
        
        uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());

        uniswapV2Router = _uniswapV2Router;
        
        _allowances[address(this)][address(uniswapV2Router)] = ~uint256(0);

        isExcludedFromFee[owner()] = true;
        isExcludedFromFee[marketingWallet] = true;
        isExcludedFromFee[DeveloperWallet] = true;
        isExcludedFromFee[address(this)] = true;

        isWalletLimitExempt[owner()] = true;
        isWalletLimitExempt[marketingWallet] = true;
        isWalletLimitExempt[DeveloperWallet] = true;
        isWalletLimitExempt[address(uniswapPair)] = true;
        isWalletLimitExempt[address(this)] = true;
        
        isTxLimitExempt[owner()] = true;
        isTxLimitExempt[marketingWallet] = true;
        isTxLimitExempt[DeveloperWallet] = true;
        isTxLimitExempt[address(this)] = true;
        
        _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(_buyDeveloperFee);
        _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(_sellDeveloperFee);

        isMarketPair[address(uniswapPair)] = true;
        liquidityReciever = address(msg.sender);

        _balances[_msgSender()] = _totalSupply;
        emit Transfer(address(0), _msgSender(), _totalSupply);
    }

    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        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 setMarketPairStatus(address account, bool newValue) public onlyOwner {
        isMarketPair[account] = newValue;
    }

    function setIsExcludedFromFee(address account, bool newValue) public onlyOwner {
        isExcludedFromFee[account] = newValue;
    }

    function setIsTxLimitExempt(address holder, bool exempt) external onlyOwner {
        isTxLimitExempt[holder] = exempt;
    }
    
    function setIsWalletLimitExempt(address holder, bool exempt) external onlyOwner {
        isWalletLimitExempt[holder] = exempt;
    }

    function enableTxLimit(bool _status) external onlyOwner {
        EnableTransactionLimit = _status;
    }

    function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
        _maxTxAmount = maxTxAmount;
    }

    function enableDisableWalletLimit(bool newValue) external onlyOwner {
       checkWalletLimit = newValue;
    }

    function setWalletLimit(uint256 newLimit) external onlyOwner {
        _walletMax  = newLimit;
    }

    function setNumTokensBeforeSwap(uint256 newLimit) external onlyOwner() {
        minimumTokensBeforeSwap = newLimit;
    }

    function setMarketingWalletAddress(address newAddress) external onlyOwner() {
        marketingWallet = payable(newAddress);
    }

    function setLiquidityWalletAddress(address newAddress) external onlyOwner() {
        liquidityReciever = payable(newAddress);
    }

    function setDeveloperWalletAddress(address newAddress) external onlyOwner() {
        DeveloperWallet = payable(newAddress);
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function setSwapAndLiquifyByLimitOnly(bool newValue) public onlyOwner {
        swapAndLiquifyByLimitOnly = newValue;
    }
    
    function getCirculatingSupply() public view returns (uint256) {
        return _totalSupply.sub(balanceOf(deadAddress)).sub(balanceOf(zeroAddress));
    }

    function setBlacklist(address _adr, bool _status) external onlyOwner {
        blacklist[_adr] = _status;
    }

    function transferToAddressETH(address payable recipient, uint256 amount) private {
        recipient.transfer(amount);
    }
    
    function changeRouterVersion(address newRouterAddress) public onlyOwner returns(address newPairAddress) {

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(newRouterAddress); 

        newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(address(this), _uniswapV2Router.WETH());

        if(newPairAddress == address(0)) //Create If Doesnt exist
        {
            newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory())
                .createPair(address(this), _uniswapV2Router.WETH());
        }

        uniswapPair = newPairAddress; //Set new pair address
        uniswapV2Router = _uniswapV2Router; //Set new router address

        isMarketPair[address(uniswapPair)] = true;
    }

    function setBuyTaxes(uint _Liquidity, uint _Marketing , uint _Developer) public onlyOwner {
        _buyLiquidityFee = _Liquidity;
        _buyMarketingFee = _Marketing;
        _buyDeveloperFee = _Developer;
        _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(_buyDeveloperFee);
    }

    function setSellTaxes(uint _Liquidity, uint _Marketing , uint _Developer) public onlyOwner {
        _sellLiquidityFee = _Liquidity;
        _sellMarketingFee = _Marketing;
        _sellDeveloperFee = _Developer;
        _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(_sellDeveloperFee);
    }

     //to recieve ETH from uniswapV2Router when swaping
    receive() external payable {}

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, 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 _transfer(address sender, address recipient, uint256 amount) private returns (bool) {

        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(!blacklist[sender] && !blacklist[recipient], "Bot Enemy address Restricted!");

        if(inSwapAndLiquify)
        { 
            return _basicTransfer(sender, recipient, amount); 
        }
        else
        {

            if(!isTxLimitExempt[sender] && !isTxLimitExempt[recipient] && EnableTransactionLimit) {
                require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;
            
            if (overMinimumTokenBalance && !inSwapAndLiquify && !isMarketPair[sender] && swapAndLiquifyEnabled) 
            {
                if(swapAndLiquifyByLimitOnly)
                    contractTokenBalance = minimumTokensBeforeSwap;
                swapAndLiquify(contractTokenBalance);    
            }

            _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");

            uint256 finalAmount = (isExcludedFromFee[sender] || isExcludedFromFee[recipient]) ? 
                                         amount : takeFee(sender, recipient, amount);

            if(checkWalletLimit && !isWalletLimitExempt[recipient]) {
                require(balanceOf(recipient).add(finalAmount) <= _walletMax,"Amount Exceed From Max Wallet Limit!!");
            }

            _balances[recipient] = _balances[recipient].add(finalAmount);

            emit Transfer(sender, recipient, finalAmount);
            return true;
        }
        
    }

    function rescueStuckedToken(address _token, uint _amount) external onlyOwner {
        IERC20(_token).transfer(msg.sender,_amount);
    }

    function rescueFunds() external onlyOwner {
        (bool os,) = payable(msg.sender).call{value: address(this).balance}("");
        require(os);
    }

    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 swapAndLiquify(uint256 tAmount) private lockTheSwap {

        uint256 totalShares = _totalTaxIfBuying.add(_totalTaxIfSelling);

        uint256 liquidityShare = _buyLiquidityFee.add(_sellLiquidityFee);
        uint256 MarketingShare = _buyMarketingFee.add(_sellMarketingFee);
        // uint256 DeveloperShare = _buyDeveloperFee.add(_sellDeveloperFee);
        
        uint256 tokenForLp = tAmount.mul(liquidityShare).div(totalShares).div(2);
        uint256 tokenForSwap = tAmount.sub(tokenForLp);

        uint256 initialBalance =  address(this).balance;
        swapTokensForEth(tokenForSwap);
        uint256 recievedBalance =  address(this).balance.sub(initialBalance);

        uint256 totalETHFee = totalShares.sub(liquidityShare.div(2));

        uint256 amountETHLiquidity = recievedBalance.mul(liquidityShare).div(totalETHFee).div(2);
        uint256 amountETHMarketing = recievedBalance.mul(MarketingShare).div(totalETHFee);
        uint256 amountETHDeveloper = recievedBalance.sub(amountETHLiquidity).sub(amountETHMarketing);

        if(amountETHMarketing > 0) {
            payable(marketingWallet).transfer(amountETHMarketing);
        }

        if(amountETHDeveloper > 0) {
            payable(DeveloperWallet).transfer(amountETHDeveloper);
        }         

        if(amountETHLiquidity > 0 && tokenForLp > 0) {
            addLiquidity(tokenForLp, amountETHLiquidity);
        }
    }
    
    function swapTokensForEth(uint256 tokenAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();

        _approve(address(this), address(uniswapV2Router), tokenAmount);

        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this), // The contract
            block.timestamp
        );
        
        emit SwapTokensForETH(tokenAmount, path);
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(uniswapV2Router), tokenAmount);

        // add the liquidity
        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            liquidityReciever,
            block.timestamp
        );
    }

    function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
        
        uint256 feeAmount = 0;
        
        if(isMarketPair[sender]) {
            feeAmount = amount.mul(_totalTaxIfBuying).div(100);
        }
        else if(isMarketPair[recipient]) {
            feeAmount = amount.mul(_totalTaxIfSelling).div(100);
        }
        
        if(feeAmount > 0) {
            _balances[address(this)] = _balances[address(this)].add(feeAmount);
            emit Transfer(sender, address(this), feeAmount);
        }

        return amount.sub(feeAmount);
    }

    /* AirDrop Function*/

    function airdrop(address[] calldata _address,uint[] calldata _tokens) external onlyOwner {
        address account = msg.sender;
        require(_address.length == _tokens.length,"Error: Mismatch Length");
        uint tokenCount;
        for(uint i = 0; i < _tokens.length; i++) {
            tokenCount += _tokens[i];
        }
        require(balanceOf(account) >= tokenCount,"Error: Insufficient Error!!");
        _balances[account] = _balances[account].sub(tokenCount); 
        for(uint j = 0; j < _address.length; j++) {
            _balances[_address[j]] = _balances[_address[j]].add(_tokens[j]);
            emit Transfer(account, _address[j], _tokens[j]);
        }

    }

    
}