contract CyberTama is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using Address for address;

    mapping(address => uint256) private _rOwned;
    mapping(address => uint256) private _tOwned;
    mapping(address => mapping(address => uint256)) private _allowances;

    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) public _isBlackListed;
    mapping(address => bool) private _isExcluded;

    address[] private _excluded;

    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 1 * 10**9 * 10**18;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;

    string private _name = "Cybertama";
    string private _symbol = "CYBER";
    uint8 private _decimals = 18;

    struct BuyFee {
        uint16 marketingFee;
        uint16 liquidityFee;
        uint16 taxFee;
        uint16 burnFee;
    }

    struct SellFee {
        uint16 liquidityFee;
        uint16 marketingFee;
        uint16 taxFee;
        uint16 burnFee;
    }

    BuyFee public buyFee;
    SellFee public sellFee;

    uint16 private _taxFee;
    uint16 private _liquidityFee;
    uint16 private _marketingFee;
    uint16 private _burnFee;

    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapV2Pair;

    address public _marketingWallet =
        payable(address(0xfac820D7fa7267cc7A9213006a477c064b3bFf80));

    address public _devWallet = payable(address(0x58550ec20AA8D496eCdB8Fb8aa9231Da79850c98));    

    bool internal inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    bool private isTradingEnabled;
    uint256 public tradingStartBlock;

    uint256 private lastBlock;

    uint256 public maxBuyAmount;
    uint256 public maxSellAmount;
    uint256 public maxWalletAmount;

    uint256 private numTokensSellToAddToLiquidity = 1 * 10**9 * 10**18;
    uint8 public constant BLOCKCOUNT = 100; //Blacklist first 100 block buys

    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );

    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    constructor() {
        _rOwned[_msgSender()] = _rTotal;

        buyFee.marketingFee = 7;
        buyFee.liquidityFee = 2;
        buyFee.taxFee = 2;
        buyFee.burnFee = 1;

        sellFee.liquidityFee = 2;
        sellFee.marketingFee = 7;
        sellFee.taxFee = 2;
        sellFee.burnFee = 1;
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        // Create a uniswap pair for this new token
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());

        // set the rest of the contract variables
        uniswapV2Router = _uniswapV2Router;

        //exclude owner and this contract from fee
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;

        maxSellAmount = totalSupply().mul(125).div(100000);
        maxBuyAmount = totalSupply().mul(125).div(100000);
        maxWalletAmount = totalSupply().mul(5).div(1000);

        lastBlock = block.number;

        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    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 _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (_isExcluded[account]) return _tOwned[account];
        return tokenFromReflection(_rOwned[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 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 enableTrading() external onlyOwner {
        isTradingEnabled = true;
        tradingStartBlock = block.number;
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function totalFees() public view returns (uint256) {
        return _tFeeTotal;
    }

    function deliver(uint256 tAmount) public {
        address sender = _msgSender();
        require(
            !_isExcluded[sender],
            "Excluded addresses cannot call this function"
        );
        (uint256 rAmount, , , , , ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rTotal = _rTotal.sub(rAmount);
        _tFeeTotal = _tFeeTotal.add(tAmount);
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferFee)
        public
        view
        returns (uint256)
    {
        require(tAmount <= _tTotal, "Amount must be less than supply");
        if (!deductTransferFee) {
            (uint256 rAmount, , , , , ) = _getValues(tAmount);
            return rAmount;
        } else {
            (, uint256 rTransferAmount, , , , ) = _getValues(tAmount);
            return rTransferAmount;
        }
    }

    function tokenFromReflection(uint256 rAmount)
        public
        view
        returns (uint256)
    {
        require(
            rAmount <= _rTotal,
            "Amount must be less than total reflections"
        );
        uint256 currentRate = _getRate();
        return rAmount.div(currentRate);
    }

    function excludeFromReward(address account) public onlyOwner {
        require(!_isExcluded[account], "Account is already excluded");
        if (_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner {
        require(_isExcluded[account], "Account is already excluded");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tOwned[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    function excludeFromFee(address account) external onlyOwner {
        _isExcludedFromFee[account] = true;
    }

    function setBlackList(address addr, bool value) external onlyOwner {
        _isBlackListed[addr] = value;
    }

    function includeInFee(address account) external onlyOwner {
        _isExcludedFromFee[account] = false;
    }

    function setBuyFee(uint16 market, uint16 Liquidity, uint16 tax, uint16 burn) external onlyOwner {
        buyFee.marketingFee = market;
        buyFee.liquidityFee = Liquidity;
        buyFee.taxFee = tax;
        buyFee.burnFee = burn;
        uint256 totalBuyFee = market + Liquidity + tax + burn;
        require(totalBuyFee < 35, "Buy fees should be less than 35%");
    }

    function setSellFee(
        uint16 liq,
        uint16 market,
        uint16 tax,
        uint16 burn
    ) external onlyOwner {
        sellFee.liquidityFee = liq;
        sellFee.marketingFee = market;
        sellFee.taxFee = tax;
        sellFee.burnFee = burn;
        uint256 totalSellFee = liq + market + tax + burn;
        require(totalSellFee < 35, "Sell fees should be less than 35%");
    }

    function setNumTokensSellToAddToLiquidity(uint256 numTokens)
        external
        onlyOwner
    {
        numTokensSellToAddToLiquidity = numTokens;
    }

    function updateRouter(address newAddress) external onlyOwner {
        require(
            newAddress != address(uniswapV2Router),
            "TOKEN: The router already has that address"
        );
        uniswapV2Router = IUniswapV2Router02(newAddress);
        address get_pair = IUniswapV2Factory(uniswapV2Router.factory()).getPair(
            address(this),
            uniswapV2Router.WETH()
        );
        if (get_pair == address(0)) {
            uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())
                .createPair(address(this), uniswapV2Router.WETH());
        } else {
            uniswapV2Pair = get_pair;
        }
    }

    function setMaxWallet(uint256 value) external onlyOwner {
        require (value > 100000,"No rug pulls");
        maxWalletAmount = value * 10**18;
    }

    function setMaxBuyAmount(uint256 value) external onlyOwner {
         require (value > 100000,"No rug pulls");
        maxBuyAmount = value * 10**18;
    }

    function setMaxSellAmount(uint256 value) external onlyOwner {
         require (value > 100000,"No rug pulls");
        maxSellAmount = value * 10**18;
    }

    function setMarketingWallet(address payable wallet) external onlyOwner {
        require(
            wallet != address(0),
            "MarketingWallet address can not be zero!"
        );
        _marketingWallet = wallet;
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function claimStuckTokens(address _token) external onlyOwner {
        require(_token != address(this), "No rug pulls :)");

        if (_token == address(0x0)) {
            payable(owner()).transfer(address(this).balance);
            return;
        }

        IERC20 erc20token = IERC20(_token);
        uint256 balance = erc20token.balanceOf(address(this));
        erc20token.transfer(owner(), balance);
    }

    //to recieve ETH from uniswapV2Router when swaping
    receive() external payable {
        this;
    }

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal.sub(rFee);
        _tFeeTotal = _tFeeTotal.add(tFee);
    }

    function _getValues(uint256 tAmount)
        private
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        (
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity,
            uint256 tWallet
        ) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(
            tAmount,
            tFee,
            tLiquidity,
            tWallet,
            _getRate()
        );
        return (
            rAmount,
            rTransferAmount,
            rFee,
            tTransferAmount,
            tFee,
            tLiquidity
        );
    }

    function _getTValues(uint256 tAmount)
        private
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        uint256 tFee = calculateTaxFee(tAmount);
        uint256 tLiquidity = calculateLiquidityFee(tAmount);
        uint256 tWallet = calculateMarketingFee(tAmount) + calculateBurnFee(tAmount);
        uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
        tTransferAmount = tTransferAmount.sub(tWallet);
        return (tTransferAmount, tFee, tLiquidity, tWallet);
    }

    function _getRValues(
        uint256 tAmount,
        uint256 tFee,
        uint256 tLiquidity,
        uint256 tWallet,
        uint256 currentRate
    )
        private
        pure
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rFee = tFee.mul(currentRate);
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        uint256 rWallet = tWallet.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity).sub(
            rWallet
        );
        return (rAmount, rTransferAmount, rFee);
    }

    function _getRate() private view returns (uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply.div(tSupply);
    }

    function _getCurrentSupply() private view returns (uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (
                _rOwned[_excluded[i]] > rSupply ||
                _tOwned[_excluded[i]] > tSupply
            ) return (_rTotal, _tTotal);
            rSupply = rSupply.sub(_rOwned[_excluded[i]]);
            tSupply = tSupply.sub(_tOwned[_excluded[i]]);
        }
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function _takeLiquidityAndBurn(uint256 tLiquidity, uint256 tBurn) private {
        uint256 currentRate = _getRate();
        uint256 rLiquidity = tLiquidity.mul(currentRate);
         uint256 rBurn = tBurn.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
        _rOwned[address(0)] = _rOwned[address(0)].add(rBurn);

        if (_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
             if (_isExcluded[address(0)])
            _tOwned[address(0)] = _tOwned[address(0)].add(tBurn);
    }

    function _takeMarketing(uint256 tMarketing) private {
        uint256 currentRate = _getRate();
        uint256 rMarketing = tMarketing.mul(currentRate);

        _rOwned[address(this)] = _rOwned[address(this)].add(rMarketing);
        if (_isExcluded[address(this)]) {
            _tOwned[address(this)] = _tOwned[address(this)].add(tMarketing);
        }
    }

    function calculateTaxFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_taxFee).div(10**2);
    }

    function calculateLiquidityFee(uint256 _amount)
        private
        view
        returns (uint256)
    {
        return _amount.mul(_liquidityFee).div(10**2);
    }

    function calculateBurnFee(uint256 _amount)
        private
        view
        returns (uint256)
    {
        return _amount.mul(_burnFee).div(10**2);
    }

    function calculateMarketingFee(uint256 _amount)
        private
        view
        returns (uint256)
    {
        return _amount.mul(_marketingFee).div(10**2);
    }

    function removeAllFee() private {
        _taxFee = 0;
        _liquidityFee = 0;
        _marketingFee = 0;
        _burnFee =0;
    }

    function setBuy() private {
        _taxFee = buyFee.taxFee;
        _liquidityFee = buyFee.liquidityFee;
        _marketingFee = buyFee.marketingFee;
        _burnFee = buyFee.burnFee;
    }

    function setSell() private {
        _taxFee = sellFee.taxFee;
        _liquidityFee = sellFee.liquidityFee;
        _marketingFee = sellFee.marketingFee;
        _burnFee = sellFee.burnFee;
    }

    function isExcludedFromFee(address account) public view returns (bool) {
        return _isExcludedFromFee[account];
    }

    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(
            !_isBlackListed[from] && !_isBlackListed[to],
            "Account is blacklisted"
        );
        require(
            isTradingEnabled || _isExcludedFromFee[from],
            "Trading not enabled yet"
        );



        // is the token balance of this contract address over the min number of
        // tokens that we need to initiate a swap + liquidity lock?
        // also, don't get caught in a circular liquidity event.
        // also, don't swap & liquify if sender is uniswap pair.
        uint256 contractTokenBalance = balanceOf(address(this));

        bool overMinTokenBalance = contractTokenBalance >=
            numTokensSellToAddToLiquidity;
        if (
            overMinTokenBalance &&
            !inSwapAndLiquify &&
            from != uniswapV2Pair &&
            swapAndLiquifyEnabled
        ) {
            contractTokenBalance = numTokensSellToAddToLiquidity;

            uint256 forMarketing = contractTokenBalance
                .mul(buyFee.marketingFee + sellFee.marketingFee)
                .div(
                    buyFee.marketingFee +
                        sellFee.marketingFee +
                        sellFee.liquidityFee
                );

            if (forMarketing > 0) {
                swapAndSendMarketingAndDev(forMarketing);
            }

            swapAndLiquify(contractTokenBalance - forMarketing);
        }

        //indicates if fee should be deducted from transfer
        bool takeFee = true;

        //if any account belongs to _isExcludedFromFee account then remove the fee
        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            takeFee = false;
        }

        //transfer amount, it will take tax, liquidity fee
        _tokenTransfer(from, to, amount, takeFee);
    }

    function swapAndLiquify(uint256 tokens) private lockTheSwap {
        // split the contract balance into halves
        uint256 half = tokens.div(2);
        uint256 otherHalf = tokens.sub(half);

        uint256 initialBalance = address(this).balance;

        // swap tokens for ETH
        swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered

        // how much ETH did we just swap into?
        uint256 newBalance = address(this).balance.sub(initialBalance);

        // add liquidity to uniswap
        addLiquidity(otherHalf, newBalance);

        emit SwapAndLiquify(half, newBalance, otherHalf);
    }

    function swapAndSendMarketingAndDev(uint256 amount) private lockTheSwap {
        uint256 initialBalance = address(this).balance;
        swapTokensForEth(amount);
        uint256 newBalance = address(this).balance.sub(initialBalance);
        uint256 devShare = newBalance.div(7);
        payable(_devWallet).transfer(devShare);

        payable(_marketingWallet).transfer(newBalance - devShare );
    }

    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),
            block.timestamp
        );
    }

    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
            address(0xdead),
            block.timestamp
        );
    }

    //this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 amount,
        bool takeFee
    ) private {
        removeAllFee();

        if (takeFee) {
            require(block.number > lastBlock, "One transfer per block");

            lastBlock = block.number;

            if (recipient != uniswapV2Pair) {
                require(
                    balanceOf(recipient) + amount <= maxWalletAmount,
                    "Balance exceeds limit"
                );
            }
            if (sender == uniswapV2Pair) {
                require(amount <= maxBuyAmount, "Buy exceeds limit");

                if (block.number < tradingStartBlock + BLOCKCOUNT) {
                    _isBlackListed[recipient] = true;
                }
                setBuy();
            }
            if (recipient == uniswapV2Pair) {
                require(amount <= maxSellAmount, "Sell exceeds limit");
                setSell();
            }
        }

        if (_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferFromExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && _isExcluded[recipient]) {
            _transferToExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferStandard(sender, recipient, amount);
        } else if (_isExcluded[sender] && _isExcluded[recipient]) {
            _transferBothExcluded(sender, recipient, amount);
        } else {
            _transferStandard(sender, recipient, amount);
        }
    }

    function _transferStandard(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidityAndBurn(tLiquidity, calculateBurnFee(tAmount));
        _takeMarketing(calculateMarketingFee(tAmount));
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferToExcluded(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
         _takeLiquidityAndBurn(tLiquidity, calculateBurnFee(tAmount));
        _takeMarketing(calculateMarketingFee(tAmount));
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferFromExcluded(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _tOwned[sender] = _tOwned[sender].sub(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidityAndBurn(tLiquidity, calculateBurnFee(tAmount));
        _takeMarketing(calculateMarketingFee(tAmount));
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferBothExcluded(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _tOwned[sender] = _tOwned[sender].sub(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidityAndBurn(tLiquidity, calculateBurnFee(tAmount));
        _takeMarketing(calculateMarketingFee(tAmount));
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }
}
function _tokenTransfer(
    address sender,
    address recipient,
    uint256 amount,
    bool takeFee
) private {
    removeAllFee();

    if (takeFee) {
        require(block.number > lastBlock, "One transfer per block");

        lastBlock = block.number;

        if (recipient != uniswapV2Pair) {
            require(
                balanceOf(recipient) + amount <= maxWalletAmount,
                "Balance exceeds limit"
            );
        }
        if (sender == uniswapV2Pair) {
            require(amount <= maxBuyAmount, "Buy exceeds limit");

            if (block.number < tradingStartBlock + BLOCKCOUNT) {
                _isBlackListed[recipient] = true;
            }
            setBuy();
        }
        if (recipient == uniswapV2Pair) {
            require(amount <= maxSellAmount, "Sell exceeds limit");
            setSell();
        }
    }

    if (_isExcluded[sender] && !_isExcluded[recipient]) {
        _transferFromExcluded(sender, recipient, amount);
    } else if (!_isExcluded[sender] && _isExcluded[recipient]) {
        _transferToExcluded(sender, recipient, amount);
    } else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
        _transferStandard(sender, recipient, amount);
    } else if (_isExcluded[sender] && _isExcluded[recipient]) {
        _transferBothExcluded(sender, recipient, amount);
    } else {
        _transferStandard(sender, recipient, amount);
    }
}

//this method is responsible for taking all fee, if takeFee is true