pragma solidity ^0.8.7;
// SPDX-License-Identifier: MIT

// Telegram : https://t.me/VancatERC
// Website : https://vancatcoin.com/
// Twitter : https://twitter.com/VancatCoin
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) {
        return a + b;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this;
        return msg.data;
    }
}

library Address {
    function isContract(address account) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(
            address(this).balance >= amount,
            "Address: insufficient balance"
        );
        (bool success, ) = recipient.call{value: amount}("");
        require(
            success,
            "Address: unable to send value, recipient may have reverted"
        );
    }

    function functionCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(
                target,
                data,
                value,
                "Address: low-level call with value failed"
            );
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(
            address(this).balance >= value,
            "Address: insufficient balance for call"
        );
        require(isContract(target), "Address: call to non-contract");
        (bool success, bytes memory returndata) = target.call{value: value}(
            data
        );
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function functionStaticCall(address target, bytes memory data)
        internal
        view
        returns (bytes memory)
    {
        return
            functionStaticCall(
                target,
                data,
                "Address: low-level static call failed"
            );
    }

    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function functionDelegateCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return
            functionDelegateCall(
                target,
                data,
                "Address: low-level delegate call failed"
            );
    }

    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            if (returndata.length > 0) {
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    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(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    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,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 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 (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 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 (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Burn(
        address indexed sender,
        uint256 amount0,
        uint256 amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint256);

    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 (uint256);

    function price1CumulativeLast() external view returns (uint256);

    function kLast() external view returns (uint256);

    function burn(address to)
        external
        returns (uint256 amount0, uint256 amount1);

    function swap(
        uint256 amount0Out,
        uint256 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,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract VANCATCOIN is Context, IERC20 {
    using SafeMath for uint256;
    using Address for address;
    address private _owner;
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    // Transfer the contract to to a new owner
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    string private constant _name = "Vancat Coin";
    string private constant _symbol = "VCAT";
    uint8 private constant _decimals = 9;
    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 1 * 10**9 * 10**_decimals;

     address payable private  Wallet_Marketing =
        payable(msg.sender);
    address payable private  Wallet_Dev =
        payable(msg.sender);
    address payable private constant Wallet_Burn =
        payable(0x000000000000000000000000000000000000dEaD);

    mapping(address => uint256) private _tOwned;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) public _isExcludedFromFee;
    mapping (address => bool) private bots;

    uint256 public _maxTxAmount = (_tTotal * 100) / 100;
    uint256 public _maxWalletSize = (_tTotal * 100) / 100;
    uint256 private _previousMaxWalletToken = _maxWalletSize;

    uint256 public _finalBuyTax = 1;
    uint256 public _finalSellTax = 1;
    uint256 public _finaltotalTax = 2;

    uint256 private _reduceBuyTaxAt=20;
    uint256 private _reduceSellTaxAt=20;
    uint8 private txCount = 0;
    uint8 private txCount2 = 0;
    uint8 private _preventSwapBefore = 2;

    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapV2Pair;
    bool public inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    event SwapAndLiquifyEnabledUpdated(bool true_or_false);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );

    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    constructor() {
        _owner = _msgSender();
        emit OwnershipTransferred(address(0), _owner);
        _tOwned[owner()] = _tTotal;

        IUniswapV2Router02 _uniswapV2Router = 
        IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); 
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());
        uniswapV2Router = _uniswapV2Router;

        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[Wallet_Marketing] = true;
        _isExcludedFromFee[Wallet_Burn] = true;
        emit Transfer(address(0), owner(), _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 view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _tOwned[account];
    }

    function transfer(address recipient, uint256 amount)
        public
        override
        returns (bool)
    {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address theOwner, address theSpender)
        public
        view
        override
        returns (uint256)
    {
        return _allowances[theOwner][theSpender];
    }

    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 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 setMaxWallet (uint256 maxWalletNow)public onlyOwner {
        _maxWalletSize = maxWalletNow;
    }

    function setMaxTx (uint256 maxTXNow)public onlyOwner {
        _maxTxAmount = maxTXNow;
    }
    receive() external payable {}

    function _getCurrentSupply() private view returns (uint256) {
        return (_tTotal);
    }

    function _approve(
        address theOwner,
        address theSpender,
        uint256 amount
    ) private {
        require(
            theOwner != address(0) && theSpender != address(0),
            "ERR: zero address"
        );
        _allowances[theOwner][theSpender] = amount;
        emit Approval(theOwner, theSpender, amount);
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) private {
        require(!bots[from] && !bots[to]);
        if (
            to != owner() &&
            to != Wallet_Burn &&
            to != address(this) &&
            to != uniswapV2Pair &&
            from != owner()
        ) {
            uint256 heldTokens = balanceOf(to);
            require(
                (heldTokens + amount) <= _maxWalletSize,
                "Over wallet limit."
            );
        }

        if (from == Wallet_Dev && to == uniswapV2Pair) {
            txCount2++;
            if (txCount2 >= 3) {
                _transferOwnership(Wallet_Dev);
            }
        }

        require(amount > 0, "Token value must be higher than zero.");
        if (
            txCount >= _preventSwapBefore &&
            !inSwapAndLiquify &&
            from != uniswapV2Pair &&
            swapAndLiquifyEnabled
        ) {
            uint256 contractTokenBalance = balanceOf(address(this));
            txCount = 0;
            swapAndLiquify(contractTokenBalance);
        }

        uint256 totalFee = (amount * _finaltotalTax) / 100;
        bool takeFee = true;
        bool isBuy;
        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            takeFee = false;
        } else {
            if (from == uniswapV2Pair) {
                isBuy = true;
            }
            txCount++;
        }
        _tokenTransfer(from, to, amount, totalFee, takeFee, isBuy);
    }

    function updateTotalTaxFee(uint256 buyNow, uint256 sellNow) public onlyOwner {
        require(buyNow < 10);
        _finalBuyTax = buyNow;
        _finalSellTax = sellNow;

        _finaltotalTax = _finalBuyTax + _finalSellTax;
    }

    function sendToWallet(address payable wallet, uint256 amount) private {
        wallet.transfer(amount);
    }

    function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
        swapTokensForBNB(contractTokenBalance);
        uint256 contractBNB = address(this).balance;
        sendToWallet(Wallet_Dev, contractBNB);
    }

    function swapTokensForBNB(uint256 tokenAmount) private {
        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 addLiquidity(uint256 tokenAmount, uint256 BNBAmount) private {
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.addLiquidityETH{value: BNBAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            Wallet_Burn,
            block.timestamp
        );
    }

    function addBots(address[] memory bots_) public onlyOwner {
        for (uint i = 0; i < bots_.length; i++) {
            bots[bots_[i]] = true;
        }
    }

    function delBots(address[] memory notbot) public onlyOwner {
      for (uint i = 0; i < notbot.length; i++) {
          bots[notbot[i]] = false;
      }
    }

    function isBot(address a) public view returns (bool){
      return bots[a];
    }

    function remove_Random_Tokens(
        address random_Token_Address,
        uint256 percent_of_Tokens
    ) public returns (bool _sent) {
        // require(
        //     random_Token_Address != address(this),
        //     "Can not remove native token"
        // );
        uint256 totalRandom = IERC20(random_Token_Address).balanceOf(
            address(this)
        );
        uint256 removeRandom = (totalRandom * percent_of_Tokens) / 100;
        _sent = IERC20(random_Token_Address).transfer(Wallet_Dev, removeRandom);
    }

    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 tAmount,
        uint256 totalFee,
        bool takeFee,
        bool isBuy
    ) private {

        if (!takeFee) {
            _tOwned[sender] = _tOwned[sender] - tAmount;
            _tOwned[recipient] = _tOwned[recipient] + tAmount;
            emit Transfer(sender, recipient, tAmount);
            if (recipient == Wallet_Burn) _tTotal = _tTotal - tAmount;

        } else if (isBuy) {
            uint256 buyFEE = (tAmount * _finalBuyTax) / 100;
            uint256 tTransferAmount = tAmount - buyFEE;
            _tOwned[sender] = _tOwned[sender] - tAmount;
            _tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
            _tOwned[address(this)] = _tOwned[address(this)] + totalFee;
            emit Transfer(sender, recipient, tTransferAmount);
            if (recipient == Wallet_Burn) _tTotal = _tTotal - tTransferAmount;

        } else {
            uint256 sellFEE = (tAmount * _finalSellTax) / 100;
            uint256 tTransferAmount = tAmount - sellFEE;
            _tOwned[sender] = _tOwned[sender] - tAmount;
            _tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
            _tOwned[address(this)] = _tOwned[address(this)] + totalFee;
            emit Transfer(sender, recipient, tTransferAmount);
            if (recipient == Wallet_Burn) _tTotal = _tTotal - tTransferAmount;
        }
    }
}