// SPDX-License-Identifier: MIT

//telegram: https://t.me/
//twitter: https://twitter.com/
//website: 

pragma solidity 0.8.9;

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(
        address recipient,
        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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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
    );
}

interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

contract ERC20 is Context, IERC20, IERC20Metadata {
    using SafeMath for uint256;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(
        address account
    ) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(
        address owner,
        address spender
    ) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(
        address spender,
        uint256 amount
    ) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(
        address spender,
        uint256 addedValue
    ) public virtual returns (bool) {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].add(addedValue)
        );
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(
        address spender,
        uint256 subtractedValue
    ) public virtual returns (bool) {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].sub(
                subtractedValue,
                "ERC20: decreased cannot be below zero"
            )
        );
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        _balances[sender] = _balances[sender].sub(
            amount,
            "ERC20: transfer amount exceeds balance"
        );
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }
}

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() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

library SafeMathInt {
    int256 private constant MIN_INT256 = int256(1) << 255;
    int256 private constant MAX_INT256 = ~(int256(1) << 255);

    /**
     * @dev Multiplies two int256 variables and fails on overflow.
     */
    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;
    }

    /**
     * @dev Subtracts two int256 variables and fails on overflow.
     */
    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;
    }

    /**
     * @dev Adds two int256 variables and fails on overflow.
     */
    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;
    }

    /**
     * @dev Converts to absolute value, and fails on overflow.
     */
    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;
    }
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
        returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function swapTokensForExactETH(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapETHForExactTokens(
        uint amountOut,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function quote(
        uint amountA,
        uint reserveA,
        uint reserveB
    ) external pure returns (uint amountB);

    function getAmountOut(
        uint amountIn,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountOut);

    function getAmountIn(
        uint amountOut,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountIn);

    function getAmountsOut(
        uint amountIn,
        address[] calldata path
    ) external view returns (uint[] memory amounts);

    function getAmountsIn(
        uint amountOut,
        address[] calldata path
    ) external view returns (uint[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);
 
    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);
 
    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);
 
    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);
 
    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
 
    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);
 
    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);
 
    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;
 
    function initialize(address, address) external;
}

contract BOBCHAIN is ERC20, Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 public immutable router;
    address public uniswapV2Pair;

    // addresses
    address public devWallet;
    address private marketingWallet;

    // limits
    uint256 private maxBuyAmount;
    uint256 private maxSellAmount;
    uint256 private maxWalletAmount;

    uint256 private thresholdSwapAmount;

    // status flags
    bool private isTrading = false;
    bool public swapEnabled = false;
    bool public isSwapping;

    bool public lpBurnEnabled = false;
    uint256 public percentForLPBurn = 10; //0.1%
    uint256 public lpBurnFrequency = 7200 seconds;
    uint256 public lastLpBurnTime;
    uint256 public manualBurnFrequency = 30 minutes;
    uint256 public lastManualLpBurnTime;

    struct Fees {
        uint8 buyTotalFees;
        uint8 buyMarketingFee;
        uint8 buyDevFee;
        uint8 buyLiquidityFee;
        uint8 sellTotalFees;
        uint8 sellMarketingFee;
        uint8 sellDevFee;
        uint8 sellLiquidityFee;
    }

    Fees public _fees =
        Fees({
            buyTotalFees: 0,
            buyMarketingFee: 0,
            buyDevFee: 0,
            buyLiquidityFee: 0,
            sellTotalFees: 0,
            sellMarketingFee: 0,
            sellDevFee: 0,
            sellLiquidityFee: 0
        });

    uint256 public tokensForMarketing;
    uint256 public tokensForLiquidity;
    uint256 public tokensForDev;
    uint256 private taxTill;
    // exclude from fees and max transaction amount
    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) public _isExcludedMaxTransactionAmount;
    mapping(address => bool) public _isExcludedMaxWalletAmount;

    // Anti-bot and anti-whale mappings and variables
    mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch

    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
    // could be subject to a maximum transfer amount
    mapping(address => bool) public marketPair;
    mapping(address => bool) public _isBlacklisted;

    event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived);

    constructor() ERC20("BOBCHAIN.NETWORK", "BCN") payable {
        router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

        _isExcludedMaxTransactionAmount[address(router)] = true;
        _isExcludedMaxTransactionAmount[owner()] = true;
        _isExcludedMaxTransactionAmount[address(this)] = true;

        _isExcludedFromFees[owner()] = true;
        _isExcludedFromFees[address(this)] = true;

        _isExcludedMaxWalletAmount[owner()] = true;
        _isExcludedMaxWalletAmount[address(this)] = true;

        approve(address(router), type(uint256).max);
        uint256 totalSupply = 1e9 * 1e18;

        maxBuyAmount = (totalSupply * 1) / 100; // 1% maxTransactionAmountTxn
        maxSellAmount = (totalSupply * 1) / 100; // 1% maxTransactionAmountTxn
        maxWalletAmount = (totalSupply * 1) / 100; // 1% maxWallet
        thresholdSwapAmount = (totalSupply * 1) / 10000; // 0.01% swap wallet

        _fees.buyMarketingFee = 2;
        _fees.buyLiquidityFee = 1;
        _fees.buyDevFee = 1;
        _fees.buyTotalFees =
            _fees.buyMarketingFee +
            _fees.buyLiquidityFee +
            _fees.buyDevFee;

        _fees.sellMarketingFee = 2;
        _fees.sellLiquidityFee = 1;
        _fees.sellDevFee = 1;
        _fees.sellTotalFees =
            _fees.sellMarketingFee +
            _fees.sellLiquidityFee +
            _fees.sellDevFee;

        marketingWallet = address(0xDBC95bd68D5BC3e93258Aa63CECA26E12d15B206);
        devWallet = address(0x26bD9d08B399d590721476C3bC8C0cbd9aEff098);

        /*
            _mint is an internal function in ERC20.sol that is only called here,
            and CANNOT be called ever again
        */
        _mint(msg.sender, (totalSupply * 50 / 100)); //50% Liquidity
        _mint(address(this), (totalSupply * 50 / 100)); //30% Validators, 20% CEX
    }

    receive() external payable {}

    function launchToken() external onlyOwner {
        require(!isTrading, "Trades already Live!");

        uniswapV2Pair = IUniswapV2Factory(router.factory())
            .createPair(address(this), router.WETH());
        _isExcludedMaxTransactionAmount[address(uniswapV2Pair)] = true;
        _isExcludedMaxWalletAmount[address(uniswapV2Pair)] = true;
        marketPair[address(uniswapV2Pair)] = true;

        require(
            address(this).balance > 0,
            "ERC20: Must have ETH on contract to Go Live!"
        );

        addLiquidity(balanceOf(address(this)), address(this).balance);

        swapTrading();
    }

    // once enabled, can never be turned off
    function swapTrading() internal {
        isTrading = true;
        swapEnabled = true;
        taxTill = block.number + 3;

        //anti snipe lets hope 90% sell tax will ensure future prediction bots dont buy
        _fees.sellMarketingFee = 86;
        _fees.sellLiquidityFee = 2;
        _fees.sellDevFee = 2;
        _fees.sellTotalFees =
            _fees.sellMarketingFee +
            _fees.sellLiquidityFee +
            _fees.sellDevFee;
    }

    // change the minimum amount of tokens to sell from fees
    function updateThresholdSwapAmount(
        uint256 newAmount
    ) external onlyOwner returns (bool) {
        thresholdSwapAmount = newAmount;
        return true;
    }

    function updateMaxTxnAmount(
        uint256 newMaxBuy,
        uint256 newMaxSell
    ) external onlyOwner {
        require(
            ((totalSupply() * newMaxBuy) / 1000) >= (totalSupply() / 1000),
            "maxBuyAmount must be higher than 0.1%"
        );
        require(
            ((totalSupply() * newMaxSell) / 1000) >= (totalSupply() / 1000),
            "maxSellAmount must be higher than 0.1%"
        );
        maxBuyAmount = (totalSupply() * newMaxBuy) / 1000;
        maxSellAmount = (totalSupply() * newMaxSell) / 1000;
    }

    function updateMaxWalletAmount(uint256 newPercentage) external onlyOwner {
        require(
            ((totalSupply() * newPercentage) / 1000) >= (totalSupply() / 100),
            "Cannot set maxWallet lower than 1%"
        );
        maxWalletAmount = (totalSupply() * newPercentage) / 1000;
    }

    // only use to disable contract sales if absolutely necessary (emergency use only)
    function toggleSwapEnabled(bool enabled) external onlyOwner {
        swapEnabled = enabled;
    }

    function blacklistAddress(address account, bool value) external onlyOwner {
        _isBlacklisted[account] = value;
    }

    function updateFees(
        uint8 _marketingFeeBuy,
        uint8 _liquidityFeeBuy,
        uint8 _devFeeBuy,
        uint8 _marketingFeeSell,
        uint8 _liquidityFeeSell,
        uint8 _devFeeSell
    ) external onlyOwner {
        _fees.buyMarketingFee = _marketingFeeBuy;
        _fees.buyLiquidityFee = _liquidityFeeBuy;
        _fees.buyDevFee = _devFeeBuy;
        _fees.buyTotalFees =
            _fees.buyMarketingFee +
            _fees.buyLiquidityFee +
            _fees.buyDevFee;

        _fees.sellMarketingFee = _marketingFeeSell;
        _fees.sellLiquidityFee = _liquidityFeeSell;
        _fees.sellDevFee = _devFeeSell;
        _fees.sellTotalFees =
            _fees.sellMarketingFee +
            _fees.sellLiquidityFee +
            _fees.sellDevFee;
        require(_fees.buyTotalFees <= 30, "Must keep fees at 30% or less");
        require(_fees.sellTotalFees <= 30, "Must keep fees at 30% or less");
    }

    function excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
    }

    function excludeFromWalletLimit(
        address account,
        bool excluded
    ) public onlyOwner {
        _isExcludedMaxWalletAmount[account] = excluded;
    }

    function excludeFromMaxTransaction(
        address updAds,
        bool isEx
    ) public onlyOwner {
        _isExcludedMaxTransactionAmount[updAds] = isEx;
    }

    function setMarketPair(address pair, bool value) public onlyOwner {
        require(pair != uniswapV2Pair, "Must keep uniswapV2Pair");
        marketPair[pair] = value;
    }

    function setWallets(
        address _marketingWallet,
        address _devWallet
    ) external onlyOwner {
        marketingWallet = _marketingWallet;
        devWallet = _devWallet;
    }

    function isExcludedFromFees(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal override {
        if (amount == 0) {
            super._transfer(sender, recipient, 0);
            return;
        }

        if (sender != owner() && recipient != owner() && !isSwapping) {
            if (!isTrading) {
                require(
                    _isExcludedFromFees[sender] ||
                        _isExcludedFromFees[recipient],
                    "Trading is not active."
                );
            }
            if (
                marketPair[sender] &&
                !_isExcludedMaxTransactionAmount[recipient]
            ) {
                require(amount <= maxBuyAmount, "Buy transfer over max amount");
            } else if (
                marketPair[recipient] &&
                !_isExcludedMaxTransactionAmount[sender]
            ) {
                require(
                    amount <= maxSellAmount,
                    "Sell transfer over max amount"
                );
            }

            if (!_isExcludedMaxWalletAmount[recipient]) {
                require(
                    amount + balanceOf(recipient) <= maxWalletAmount,
                    "Max wallet exceeded"
                );
            }
            require(
                !_isBlacklisted[sender] && !_isBlacklisted[recipient],
                "Blacklisted address"
            );

            if (recipient != owner() && recipient != address(router) && recipient != address(uniswapV2Pair)){
                require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed.");
                _holderLastTransferTimestamp[tx.origin] = block.number;
            }
        }

        uint256 contractTokenBalance = balanceOf(address(this));

        bool canSwap = contractTokenBalance >= thresholdSwapAmount;

        if (
            canSwap &&
            swapEnabled &&
            !isSwapping &&
            marketPair[recipient] &&
            !_isExcludedFromFees[sender] &&
            !_isExcludedFromFees[recipient]
        ) {
            isSwapping = true;
            swapBack();
            isSwapping = false;
        }

        if(!isSwapping && marketPair[recipient] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[recipient]){
            autoBurnLiquidityPairTokens();
        }

        bool takeFee = !isSwapping;

        // if any account belongs to _isExcludedFromFee account then remove the fee
        if (_isExcludedFromFees[sender] || _isExcludedFromFees[recipient]) {
            takeFee = false;
        }

        // only take fees on buys/sells, do not take on wallet transfers
        if (takeFee) {
            uint256 fees = 0;
            if (block.number < taxTill) {
                fees = amount.mul(99).div(100);
                tokensForMarketing += (fees * 94) / 99;
                tokensForDev += (fees * 5) / 99;
            } else if (marketPair[recipient] && _fees.sellTotalFees > 0) {
                fees = amount.mul(_fees.sellTotalFees).div(100);
                tokensForLiquidity +=
                    (fees * _fees.sellLiquidityFee) /
                    _fees.sellTotalFees;
                tokensForMarketing +=
                    (fees * _fees.sellMarketingFee) /
                    _fees.sellTotalFees;
                tokensForDev += (fees * _fees.sellDevFee) / _fees.sellTotalFees;

            }
            // on buy
            else if (marketPair[sender] && _fees.buyTotalFees > 0) {
                fees = amount.mul(_fees.buyTotalFees).div(100);
                tokensForLiquidity +=
                    (fees * _fees.buyLiquidityFee) /
                    _fees.buyTotalFees;
                tokensForMarketing +=
                    (fees * _fees.buyMarketingFee) /
                    _fees.buyTotalFees;
                tokensForDev += (fees * _fees.buyDevFee) / _fees.buyTotalFees;
            }

            if (fees > 0) {
                super._transfer(sender, address(this), fees);
            }

            amount -= fees;
        }

        super._transfer(sender, recipient, amount);
    }

    function swapTokensForEth(uint256 tAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();

        _approve(address(this), address(router), tAmount);

        // make the swap
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(router), tAmount);

        // add the liquidity
        router.addLiquidityETH{value: ethAmount}(
            address(this),
            tAmount,
            0,
            0,
            address(this),
            block.timestamp
        );
    }

    function swapBack() private {
        uint256 contractTokenBalance = balanceOf(address(this));
        uint256 toSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
        bool success;

        if (contractTokenBalance == 0 || toSwap == 0) {
            return;
        }

        if (contractTokenBalance > thresholdSwapAmount * 20) {
            contractTokenBalance = thresholdSwapAmount * 20;
        }

        // Halve the amount of liquidity tokens
        uint256 liquidityTokens = (contractTokenBalance * tokensForLiquidity) /
            toSwap /
            2;
        uint256 amountToSwapForETH = contractTokenBalance.sub(liquidityTokens);

        uint256 initialETHBalance = address(this).balance;

        swapTokensForEth(amountToSwapForETH);

        uint256 newBalance = address(this).balance.sub(initialETHBalance);

        uint256 ethForMarketing = newBalance.mul(tokensForMarketing).div(
            toSwap
        );
        uint256 ethForDev = newBalance.mul(tokensForDev).div(toSwap);
        uint256 ethForLiquidity = newBalance - (ethForMarketing + ethForDev);

        tokensForLiquidity = 0;
        tokensForMarketing = 0;
        tokensForDev = 0;

        if (liquidityTokens > 0 && ethForLiquidity > 0) {
            addLiquidity(liquidityTokens, ethForLiquidity);
            emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity);
        }

        (success, ) = address(devWallet).call{
            value: (address(this).balance - ethForMarketing)
        }("");
        (success, ) = address(marketingWallet).call{
            value: address(this).balance
        }("");
    }

    function setAutoLPBurnSettings(uint256 _frequencyInSeconds, uint256 _percent, bool _Enabled) external onlyOwner {
        require(_frequencyInSeconds >= 600, "cannot set buyback more often than every 10 minutes");
        require(_percent <= 1000 && _percent >= 0, "Must set auto LP burn percent between 0% and 10%");
        lpBurnFrequency = _frequencyInSeconds;
        percentForLPBurn = _percent;
        lpBurnEnabled = _Enabled;
    }
 
    function autoBurnLiquidityPairTokens() internal returns (bool){
        lastLpBurnTime = block.timestamp;
 
        // get balance of liquidity pair
        uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
 
        // calculate amount to burn
        uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(10000);
 
        // pull tokens from liquidity and move to dead address permanently
        if (amountToBurn > 0){
            super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
        }
 
        //sync price since this is not in a swap transaction!
        IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
        pair.sync();
        return true;
    }

    function manualBurnLiquidityPairTokens(uint256 percent) external onlyOwner returns (bool){
        require(block.timestamp > lastManualLpBurnTime + manualBurnFrequency , "Must wait for cooldown to finish");
        require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
        lastManualLpBurnTime = block.timestamp;
 
        // get balance of liquidity pair
        uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
 
        // calculate amount to burn
        uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
 
        // pull tokens from liquidity and move to dead address permanently
        if (amountToBurn > 0){
            super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
        }
 
        //sync price since this is not in a swap transaction!
        IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
        pair.sync();
        return true;
    }

    function rescue(address token) external onlyOwner {
        if (token == 0x0000000000000000000000000000000000000000) {
            payable(msg.sender).call{value: address(this).balance}("");
        } else {
            IERC20 Token = IERC20(token);
            Token.transfer(msg.sender, Token.balanceOf(address(this)));
        }
    }

}