/**
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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;

        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;
    }
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable(address(msg.sender));
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

library SafeMathInt {
    int256 private constant MIN_INT256 = int256(1) << 255;
    int256 private constant MAX_INT256 = ~(int256(1) << 255);

   
    function mul(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a * b;

        // Detect overflow when multiplying MIN_INT256 with -1
        require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
        require((b == 0) || (c / b == a));
        return c;
    }

    /**
     * @dev Division of two int256 variables and fails on overflow.
     */
    function div(int256 a, int256 b) internal pure returns (int256) {
        // Prevent overflow when dividing MIN_INT256 by -1
        require(b != -1 || a != MIN_INT256);

        // Solidity already throws when dividing by 0.
        return a / b;
    }

    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a));
        return c;
    }

    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a));
        return c;
    }


    function abs(int256 a) internal pure returns (int256) {
        require(a != MIN_INT256);
        return a < 0 ? -a : a;
    }


    function toUint256Safe(int256 a) internal pure returns (uint256) {
        require(a >= 0);
        return uint256(a);
    }
}

library SafeMathUint {
  function toInt256Safe(uint256 a) internal pure returns (int256) {
    int256 b = int256(a);
    require(b >= 0);
    return b;
  }
}

library Address {
  
    function isContract(address account) internal view returns (bool) {
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function _callOptionalReturn(IERC20 token, bytes memory data) private {

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

abstract 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(0));
        _owner = address(0);
    }

    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 createPair(address tokenA, address tokenB) external returns (address pair);
}

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 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);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

contract VTRON is Context, IERC20, Ownable {

    using SafeMath for uint256;
    using SafeMathUint for uint256;
    using SafeMathInt for int256;
    using Address for address;
    using SafeERC20 for IERC20;
    
    address constant dead = 0x000000000000000000000000000000000000dEaD;
    
    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) private _isExcluded;
    address[] private _excluded;
    mapping (address => bool) public blacklisted;
    mapping (address => bool) public isTxLimitExempt;
    mapping (address => bool) public isWalletLimitExempt;

    address public router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    
    uint256 private constant MAX = ~uint256(0);
    
    uint256 private _tFeeTotal;

    string public constant _name ="Voltron Inu";
    string public constant _symbol = "VTRON";
    uint8 private constant _decimals = 18;

    uint256 public _tTotal = 100_000_000 * 10**_decimals;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));

    uint256 public numTokensSellToAddToLiquidity = 1000 * 10**_decimals;

    uint256 public _maxTxAmount = _tTotal.mul(15).div(1000);  //1.5%
    uint256 public _walletMax = _tTotal.mul(30).div(1000);  //3%

    bool public EnableTransactionLimit = true;
    bool public checkWalletLimit = true;

    uint256 private _taxFee = 0;                           
    uint256 private _previousTaxFee = _taxFee;

    uint256 private _liquidityFee = 1;
    uint256 private _previousLiquidtyFee = _liquidityFee;
    
    uint256 private _MarketingFee = 1;
    uint256 private _previousMarketingFee = _MarketingFee;

    uint256 private _DevelopmentFee = 2;
    uint256 private _previousDevelopmentFee = _DevelopmentFee;

    uint256 public AmountForLiquidity;
    uint256 public AmountForMarketing;
    uint256 public AmountForDevelopment;

    IUniswapV2Router02 public UniswapV2Router;
    address public UniswapV2Pair;

    address public MarketingWallet = address(0xE0BB21891a9A50a405A77CD38c87fB779E5C4cf4);
    address public DeveloperWallet = address(0x033708cDfA162efE674A5738Ec929aeb0CB1A42E);
    address public LiquidityReciever;

    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;    
    
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
    
    modifier lockTheSwap {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    struct BuyFee{
        uint256 setTaxFee;
        uint256 setLiquidityFee;
        uint256 setMarketingFee; 
        uint256 setDevelopmentFee;    
    }

    struct SellFee{
        uint256 setTaxFee;
        uint256 setLiquidityFee;
        uint256 setMarketingFee;
        uint256 setDevelopmentFee;
    }

    BuyFee public buyFee;
    SellFee public sellFee;

    constructor ()  {       
        
        _rOwned[_msgSender()] = _rTotal;

        buyFee.setTaxFee = 0;
        buyFee.setLiquidityFee = 10;
        buyFee.setMarketingFee = 10;
        buyFee.setDevelopmentFee = 20;

        sellFee.setTaxFee = 0;
        sellFee.setLiquidityFee = 10;
        sellFee.setMarketingFee = 10;
        sellFee.setDevelopmentFee = 20;
                
        IUniswapV2Router02 _UniswapV2Router = IUniswapV2Router02(router);
            // 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;

        LiquidityReciever = msg.sender;
        
        _isExcludedFromFee[_msgSender()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[address(dead)] = true;

        isWalletLimitExempt[_msgSender()] = true;
        isWalletLimitExempt[UniswapV2Pair] = true;
        isWalletLimitExempt[address(this)] = true;

        isTxLimitExempt[_msgSender()] = true;
        isTxLimitExempt[address(this)] = true;

        // excludeFromReward(address(dead));

        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function updateUniswapV2Router(address newAddress) public onlyOwner {
        require(
        newAddress != address(UniswapV2Router),
        "The router already has that address"
        );
        IUniswapV2Router02 _UniswapV2Router = IUniswapV2Router02(newAddress);
            // 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;
    }

    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) {
        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 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 returns(uint256) {
        require(tAmount <= _tTotal, "Amt 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, "Amt must be less than tot refl");
        uint256 currentRate =  _getRate();
        return rAmount.div(currentRate);
    }

    function excludeFromReward(address account) public onlyOwner() {
        require(!_isExcluded[account], "Account is already excluded from reward");
        if(_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner() {
        require(_isExcluded[account], "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) public onlyOwner() {
        _isExcludedFromFee[account] = true;
    }
    
    function includeInFee(address account) public onlyOwner() {
        _isExcludedFromFee[account] = false;
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function setMFeeWallet(address payable newFeeWallet) external onlyOwner {
        require(newFeeWallet != address(0), "ZERO ADDRESS");
        MarketingWallet = newFeeWallet;
    }

    function setDFeeWallet(address payable newFeeWallet) external onlyOwner {
        require(newFeeWallet != address(0), "ZERO ADDRESS");
        DeveloperWallet = newFeeWallet;
    }

    function setLFeeWallet(address payable newFeeWallet) external onlyOwner {
        require(newFeeWallet != address(0), "ZERO ADDRESS");
        LiquidityReciever = newFeeWallet;
    }

    //to recieve ETH from UniswapV2Router when swaping
    receive() external payable {}

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal.sub(rFee);
        _tFeeTotal = _tFeeTotal.add(tFee);
    }

    function _getValues(uint256 tAmount) private returns (uint256, uint256, uint256, uint256, uint256, uint256) {
        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());
        return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
    }

    function _getTValues(uint256 tAmount) private returns (uint256, uint256, uint256) {
        uint256 tFee = calculateTaxFee(tAmount);
        uint256 tLiquidity = calculateLiquidityFee(tAmount);
        uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
        return (tTransferAmount, tFee, tLiquidity);
    }

    function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rFee = tFee.mul(currentRate);
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
        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 _takeLiquidity(uint256 tLiquidity) private {
        uint256 currentRate =  _getRate();
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
        if(_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);

    }
    
    function calculateTaxFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_taxFee).div(
            10**3
        );
    }

    function calculateLiquidityFee(uint256 _amount) private returns (uint256) {

        AmountForLiquidity += _amount.mul(_liquidityFee).div(10**3);
        AmountForMarketing += _amount.mul(_MarketingFee).div(10**3);
        AmountForDevelopment += _amount.mul(_DevelopmentFee).div(10**3);

        return _amount.mul(_liquidityFee + _MarketingFee + _DevelopmentFee).div(
            10**3
        );
    }
  
    function removeAllFee() private {
        uint subtotal = _taxFee.add(_DevelopmentFee).add(_liquidityFee).add(_MarketingFee);
        if(subtotal == 0) return; 
        
        _previousTaxFee = _taxFee;
        _previousLiquidtyFee = _liquidityFee;
        _previousMarketingFee = _MarketingFee;
        _previousDevelopmentFee = _DevelopmentFee;

        _taxFee = 0;
        _liquidityFee = 0;
        _MarketingFee = 0;
        _DevelopmentFee = 0;
    }
    
    function restoreAllFee() private {
        _taxFee = _previousTaxFee;
        _liquidityFee = _previousLiquidtyFee;
        _MarketingFee = _previousMarketingFee;
        _DevelopmentFee = _previousDevelopmentFee;
    }

    function setBuy() private {
        _taxFee = buyFee.setTaxFee;
        _liquidityFee = buyFee.setLiquidityFee;
        _MarketingFee = buyFee.setMarketingFee;
        _DevelopmentFee = buyFee.setDevelopmentFee;
    }
    
    function setSell() private {
        _taxFee = sellFee.setTaxFee;
        _liquidityFee = sellFee.setLiquidityFee;
        _MarketingFee = sellFee.setMarketingFee;
        _DevelopmentFee = sellFee.setDevelopmentFee;
    }

    function isExcludedFromFee(address account) public view returns(bool) {
        return _isExcludedFromFee[account];
    }

    function setSwapTokenLimit(uint _value) public onlyOwner {
        numTokensSellToAddToLiquidity = _value;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ERC20: approve from zero address");
        require(spender != address(0), "ERC20: approve to 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 zero address");
        require(to != address(0), "ERC20: transfer to zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(!blacklisted[from] || !blacklisted[to],"Error: Blacklist Bots/Contracts not Allowed!!");

        if(!isTxLimitExempt[from] && !isTxLimitExempt[to] && EnableTransactionLimit) {
            require(amount <= _maxTxAmount, "Error: Transfer amount exceeds the maxTxAmount.");
        }

        if(checkWalletLimit && !isWalletLimitExempt[to]) {
            require(balanceOf(to).add(amount) <= _walletMax,"Error: Transfer Amount exceeds Wallet Limit.");
        }

        uint256 contractTokenBalance = balanceOf(address(this));
        
        bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
        if (
            !inSwapAndLiquify &&
            to == UniswapV2Pair &&
            swapAndLiquifyEnabled
        ) {
            if(overMinTokenBalance){
                swapAndLiquify();
            }

        }
        
        //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;
        }

        _tokenTransfer(from,to,amount,takeFee);

    }

    function swapAndLiquify() private lockTheSwap {
        if(AmountForLiquidity > 0) swapAndLiquidate(AmountForLiquidity);
        if(AmountForMarketing > 0) sendToMarketing(AmountForMarketing);
        if(AmountForDevelopment > 0) sendToDevelopment(AmountForDevelopment);
    }

    function sendToMarketing(uint _token) private {
        uint initalBalance = address(this).balance;
        swapTokensForETH(_token);
        uint recieveBalance = address(this).balance.sub(initalBalance);
        payable(MarketingWallet).transfer(recieveBalance);
        AmountForMarketing = AmountForMarketing.sub(_token);
    }

    function sendToDevelopment(uint _token) private {
        uint initalBalance = address(this).balance;
        swapTokensForETH(_token);
        uint recieveBalance = address(this).balance.sub(initalBalance);
        payable(DeveloperWallet).transfer(recieveBalance);
        AmountForDevelopment = AmountForDevelopment.sub(_token);
    }

    function swapAndLiquidate(uint _token) private {
        uint half = _token.div(2);
        uint otherhalf = _token.sub(half);
        uint initalBalance = address(this).balance;
        swapTokensForETH(otherhalf);
        uint recieveBalance = address(this).balance.sub(initalBalance);
        addLiquidity(half,recieveBalance);
        AmountForLiquidity = AmountForLiquidity.sub(_token);
    }
        
    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
            LiquidityReciever,
            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){

                if (sender == UniswapV2Pair) {
                    setBuy();
                }
                if (recipient == UniswapV2Pair) {
                    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);
        }
        
        if(!takeFee)
            restoreAllFee();
    }

    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);
        _takeLiquidity(tLiquidity);
        _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);           
        _takeLiquidity(tLiquidity);
        _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);   
        _takeLiquidity(tLiquidity);
        _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);        
        _takeLiquidity(tLiquidity);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _tokenTransferNoFee(address sender, address recipient, uint256 amount) private {
        uint256 currentRate =  _getRate();  
        uint256 rAmount = amount.mul(currentRate);   

        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rAmount); 
        
        if (_isExcluded[sender]) {
            _tOwned[sender] = _tOwned[sender].sub(amount);
        } 
        if (_isExcluded[recipient]) {
            _tOwned[recipient] = _tOwned[recipient].add(amount);
        } 
        emit Transfer(sender, recipient, amount);
    }

    function recoverFunds() public onlyOwner {
        (bool os,) = payable(msg.sender).call{value: address(this).balance}("");
        require(os);
    }

    function recoverERC20(address tokenAddress, uint256 tokenAmount) public onlyOwner {
        if(tokenAddress == address(this)) {
            _tokenTransferNoFee(address(this),owner(),tokenAmount);
        } 
        else {
            IERC20(tokenAddress).transfer(owner(), tokenAmount);
        }
    }

    //To Block Bots to trade
    function blacklistBot(address _adr,bool _status) public onlyOwner {
        // require(Address.isContract(_adr),"Error: BlackList Applicable For Bot/Contracts!!");
        blacklisted[_adr] = _status;
    }

    function setMaxWalletLimit(uint256 newLimit) external onlyOwner() {
        _walletMax = newLimit;
    }

    function setTxLimit(uint256 newLimit) external onlyOwner() {
        _maxTxAmount = newLimit;
    }

    function ExcludeWalletLimit(address _adr,bool _status) public onlyOwner {
        require(isWalletLimitExempt[_adr] != _status,"Not Changed!!");
        isWalletLimitExempt[_adr] = _status;
    }

    function ExcludeTxLimit(address _adr,bool _status) public onlyOwner {
        require(isTxLimitExempt[_adr] != _status,"Not Changed!!");
        isTxLimitExempt[_adr] = _status;
    }

    function enableTxLimit(bool _status) public onlyOwner {
        EnableTransactionLimit = _status;
    }

    function enableWalletLimit(bool _status) public onlyOwner {
        checkWalletLimit = _status;
    }

    function setBuyFee(
        uint _newReflection,
        uint _newLiquidity,
        uint _newMarketing,
        uint _newDevelopment
    ) public onlyOwner {
        buyFee.setTaxFee = _newReflection;
        buyFee.setLiquidityFee = _newLiquidity;
        buyFee.setMarketingFee = _newMarketing;
        buyFee.setDevelopmentFee = _newDevelopment;
    }

    function setSellFee(
        uint _newReflection,
        uint _newLiquidity,
        uint _newMarketing,
        uint _newDevelopment
    ) public onlyOwner {
        sellFee.setTaxFee = _newReflection;
        sellFee.setLiquidityFee = _newLiquidity;
        sellFee.setMarketingFee = _newMarketing;
        sellFee.setDevelopmentFee = _newDevelopment;
    }

}