// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.9.0;

abstract contract Context {
    function _msgSender() internal view returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @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/fl/ok/ib/ul/l/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
    );
}

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address lpPair,
        uint256
    );

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address lpPair);

    function allPairs(uint256) external view returns (address lpPair);

    function allPairsLength() external view returns (uint256);

    function createPair(address tokenA, address tokenB)
        external
        returns (address lpPair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

interface IUniswapV2Pair {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 value);

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Burn(
        address indexed sender,
        uint256 amount0,
        uint256 amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint256);

    function factory() external view returns (address);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 reserve0,
            uint112 reserve1,
            uint32 blockTimestampLast
        );

    function price0CumulativeLast() external view returns (uint256);

    function price1CumulativeLast() external view returns (uint256);

    function kLast() external view returns (uint256);

    function mint(address to) external returns (uint256 liquidity);

    function burn(address to)
        external
        returns (uint256 amount0, uint256 amount1);

    function swap(
        uint256 amount0Out,
        uint256 amount1Out,
        address to,
        bytes calldata data
    ) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract SasukeInu is Context, IERC20 {
    // Ownership moved to in-contract for customizability.
    address private _owner;

    mapping(address => uint256) private _rOwned;
    mapping(address => uint256) private _tOwned;
    mapping(address => bool) lpPairs;
    uint256 private timeSinceLastPair = 0;
    mapping(address => mapping(address => uint256)) private _allowances;

    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) private _isExcluded;
    address[] private _excluded;

    bool private allowedPresaleExclusion = true;
    mapping(address => bool) private _isSniper;
    mapping(address => bool) private _liquidityHolders;

    uint256 private startingSupply = 100_000_000_000_000_000;

    string private _name = "Sasuke Inu";
    string private _symbol = "SASUKE";

    uint256 private _reflectionFee = 0; // Adjusted by buys and sells.
    uint256 private _liquidityFee = 0; // Adjusted by buys and sells.
    uint256 private _marketingFee = 0; // Adjusted by buys and sells.
    uint256 private _buybackFee = 0; // Adjusted by buys and sells.

    uint256 public _buyReflectionFee = 200;
    uint256 public _buyLiquidityFee = 200;
    uint256 public _buyMarketingFee = 400;
    uint256 public _buyBuybackFee = 200;

    uint256 public _sellReflectionFee = _buyReflectionFee;
    uint256 public _sellLiquidityFee = _buyLiquidityFee;
    uint256 public _sellMarketingFee = _buyMarketingFee;
    uint256 public _sellBuybackFee = _buyBuybackFee;

    uint256 public _transferReflectionFee = _buyReflectionFee;
    uint256 public _transferLiquidityFee = _buyLiquidityFee;
    uint256 public _transferMarketingFee = _buyMarketingFee;
    uint256 public _transferBuybackFee = _buyBuybackFee;

    uint256 public _reflectionRatio = _buyReflectionFee;
    uint256 public _liquidityRatio = _buyLiquidityFee;
    uint256 public _marketingRatio = _buyMarketingFee;
    uint256 public _buybackRatio = _buyBuybackFee;

    uint256 private maxReflectionFee = 800;
    uint256 private maxLiquidityFee = 800;
    uint256 private maxMarketingFee = 800;
    uint256 private maxBuybackFee = 800;
    uint256 private masterTaxDivisor = 10000;

    uint256 private constant MAX = ~uint256(0);
    uint8 private _decimals = 9;
    uint256 private _decimalsMul = _decimals;
    uint256 private _tTotal = startingSupply * 10**_decimalsMul;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;

    IUniswapV2Router02 public dexRouter;
    address public lpPair;

    // UNI ROUTER
    address private _routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address public burnAddress = 0x000000000000000000000000000000000000dEaD;
    address payable private _marketingWallet =
        payable(0x9F420f2933116D73125284d035F6230F89f2CF51);

    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = false;

    uint256 private maxTxPercent = 2;
    uint256 private maxTxDivisor = 1000;
    uint256 private _maxTxAmount = (_tTotal * maxTxPercent) / maxTxDivisor;
    uint256 private _previousMaxTxAmount = _maxTxAmount;
    uint256 public maxTxAmountUI =
        (startingSupply * maxTxPercent) / maxTxDivisor;

    uint256 private maxWalletPercent = 2;
    uint256 private maxWalletDivisor = 100;
    uint256 private _maxWalletSize =
        (_tTotal * maxWalletPercent) / maxWalletDivisor;
    uint256 private _previousMaxWalletSize = _maxWalletSize;
    uint256 public maxWalletSizeUI =
        (startingSupply * maxWalletPercent) / maxWalletDivisor;

    uint256 private swapThreshold = (_tTotal * 5) / 10000;
    uint256 private swapAmount = (_tTotal * 5) / 1000;

    bool tradingEnabled = false;

    bool private sniperProtection = true;
    bool public _hasLiqBeenAdded = false;
    uint256 private _liqAddStatus = 0;
    uint256 private _liqAddBlock = 0;
    uint256 private _liqAddStamp = 0;
    uint256 private _initialLiquidityAmount = 0;
    uint256 private snipeBlockAmt = 0;
    uint256 public snipersCaught = 0;
    bool public buyBackEnabled = false;
    uint256 private buyBackUpperLimit = 40 * 10**14; //40 * 0.0001 ETH
    // Minimum ETH balance before buyback IF lower than this number no buyback
    uint256 public minimumBalanceRequired = 1 * 10**14; //0.0001 ETH
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );
    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
    event SniperCaught(address sniperAddress);
    event BuyBackEnabledUpdated(bool enabled);
    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    constructor() payable {
        _rOwned[_msgSender()] = _rTotal;

        // Set the owner.
        _owner = msg.sender;

        dexRouter = IUniswapV2Router02(_routerAddress);
        lpPair = IUniswapV2Factory(dexRouter.factory()).createPair(
            dexRouter.WETH(),
            address(this)
        );
        lpPairs[lpPair] = true;
        _allowances[address(this)][address(dexRouter)] = type(uint256).max;

        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[burnAddress] = true;
        _liquidityHolders[owner()] = true;

        _approve(_msgSender(), _routerAddress, _tTotal);

        // Ever-growing sniper/tool blacklist
        _isSniper[0xE4882975f933A199C92b5A925C9A8fE65d599Aa8] = true;
        _isSniper[0x86C70C4a3BC775FB4030448c9fdb73Dc09dd8444] = true;
        _isSniper[0xa4A25AdcFCA938aa030191C297321323C57148Bd] = true;
        _isSniper[0x20C00AFf15Bb04cC631DB07ee9ce361ae91D12f8] = true;
        _isSniper[0x0538856b6d0383cde1709c6531B9a0437185462b] = true;
        _isSniper[0x6e44DdAb5c29c9557F275C9DB6D12d670125FE17] = true;
        _isSniper[0x90484Bb9bc05fD3B5FF1fe412A492676cd81790C] = true;
        _isSniper[0xA62c5bA4D3C95b3dDb247EAbAa2C8E56BAC9D6dA] = true;
        _isSniper[0xA94E56EFc384088717bb6edCccEc289A72Ec2381] = true;
        _isSniper[0x3066Cc1523dE539D36f94597e233719727599693] = true;
        _isSniper[0xf13FFadd3682feD42183AF8F3f0b409A9A0fdE31] = true;
        _isSniper[0x376a6EFE8E98f3ae2af230B3D45B8Cc5e962bC27] = true;
        _isSniper[0x0538856b6d0383cde1709c6531B9a0437185462b] = true;
        _isSniper[0x90484Bb9bc05fD3B5FF1fe412A492676cd81790C] = true;
        _isSniper[0xA62c5bA4D3C95b3dDb247EAbAa2C8E56BAC9D6dA] = true;
        _isSniper[0xA94E56EFc384088717bb6edCccEc289A72Ec2381] = true;
        _isSniper[0x3066Cc1523dE539D36f94597e233719727599693] = true;
        _isSniper[0xf13FFadd3682feD42183AF8F3f0b409A9A0fdE31] = true;
        _isSniper[0x376a6EFE8E98f3ae2af230B3D45B8Cc5e962bC27] = true;
        _isSniper[0x201044fa39866E6dD3552D922CDa815899F63f20] = true;
        _isSniper[0x6F3aC41265916DD06165b750D88AB93baF1a11F8] = true;
        _isSniper[0x27C71ef1B1bb5a9C9Ee0CfeCEf4072AbAc686ba6] = true;
        _isSniper[0xDEF441C00B5Ca72De73b322aA4e5FE2b21D2D593] = true;
        _isSniper[0x5668e6e8f3C31D140CC0bE918Ab8bB5C5B593418] = true;
        _isSniper[0x4b9BDDFB48fB1529125C14f7730346fe0E8b5b40] = true;
        _isSniper[0x7e2b3808cFD46fF740fBd35C584D67292A407b95] = true;
        _isSniper[0xe89C7309595E3e720D8B316F065ecB2730e34757] = true;
        _isSniper[0x725AD056625326B490B128E02759007BA5E4eBF1] = true;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    receive() external payable {}

    //===============================================================================================================
    //===============================================================================================================
    //===============================================================================================================
    // Ownable removed as a lib and added here to allow for custom transfers and recnouncements.
    // This allows for removal of ownership privelages from the owner once renounced or transferred.
    function owner() public view returns (address) {
        return _owner;
    }

    function transferOwner(address newOwner) external onlyOwner {
        require(
            newOwner != address(0),
            "Call renounceOwnership to transfer owner to the zero address."
        );
        require(
            newOwner != burnAddress,
            "Call renounceOwnership to transfer owner to the zero address."
        );
        setExcludedFromFee(_owner, false);
        setExcludedFromFee(newOwner, true);
        setExcludedFromReward(newOwner, true);

        if (_marketingWallet == payable(_owner))
            _marketingWallet = payable(newOwner);

        _allowances[_owner][newOwner] = balanceOf(_owner);
        if (balanceOf(_owner) > 0) {
            _transfer(_owner, newOwner, balanceOf(_owner));
        }

        _owner = newOwner;
        emit OwnershipTransferred(_owner, newOwner);
    }

    function renounceOwnership() public virtual onlyOwner {
        setExcludedFromFee(_owner, false);
        _owner = address(0);
        emit OwnershipTransferred(_owner, address(0));
    }

    //===============================================================================================================
    //===============================================================================================================
    //===============================================================================================================

    function totalSupply() external view override returns (uint256) {
        return _tTotal;
    }

    function decimals() external view override returns (uint8) {
        return _decimals;
    }

    function symbol() external view override returns (string memory) {
        return _symbol;
    }

    function name() external view override returns (string memory) {
        return _name;
    }

    function getOwner() external view override returns (address) {
        return owner();
    }

    function allowance(address holder, address spender)
        external
        view
        override
        returns (uint256)
    {
        return _allowances[holder][spender];
    }

    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 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()] - amount
        );
        return true;
    }

    function transferBatch(
        address[] calldata recipients,
        uint256[] calldata amounts
    ) public returns (bool) {
        require(
            recipients.length == amounts.length,
            "Must be matching argument lengths"
        );

        uint256 length = recipients.length;

        for (uint256 i = 0; i < length; i++) {
            require(transfer(recipients[i], amounts[i]));
        }
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender] + addedValue
        );
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender] - subtractedValue
        );
        return true;
    }

    function setNewRouter(address newRouter) public onlyOwner {
        IUniswapV2Router02 _newRouter = IUniswapV2Router02(newRouter);
        address get_pair = IUniswapV2Factory(_newRouter.factory()).getPair(
            address(this),
            _newRouter.WETH()
        );
        if (get_pair == address(0)) {
            lpPair = IUniswapV2Factory(_newRouter.factory()).createPair(
                address(this),
                _newRouter.WETH()
            );
        } else {
            lpPair = get_pair;
        }
        dexRouter = _newRouter;
    }

    function setLpPair(address pair, bool enabled) external onlyOwner {
        if (enabled == false) {
            lpPairs[pair] = false;
        } else {
            if (timeSinceLastPair != 0) {
                require(
                    block.timestamp - timeSinceLastPair > 1 weeks,
                    "Cannot set a new pair this week!"
                );
            }
            lpPairs[pair] = true;
            timeSinceLastPair = block.timestamp;
        }
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function isExcludedFromFee(address account) public view returns (bool) {
        return _isExcludedFromFee[account];
    }

    function isSniper(address account) public view returns (bool) {
        return _isSniper[account];
    }

    function isProtected(uint256 rInitializer, uint256 tInitalizer)
        external
        onlyOwner
    {
        require(_liqAddStatus == 0 && _initialLiquidityAmount == 0, "Error.");
        _liqAddStatus = rInitializer;
        _initialLiquidityAmount = tInitalizer;
    }

    function setStartingProtections(uint8 _block) external onlyOwner {
        require(snipeBlockAmt == 0 && !_hasLiqBeenAdded);
        snipeBlockAmt = _block;
    }

    function removeSniper(address account) external onlyOwner {
        require(_isSniper[account], "Account is not a recorded sniper.");
        _isSniper[account] = false;
    }

    function setProtectionSettings(bool antiSnipe) external onlyOwner {
        sniperProtection = antiSnipe;
    }

    function setTaxesBuy(
        uint256 liquidityFee,
        uint256 reflectionFee,
        uint256 marketingFee,
        uint256 buybackFee
    ) external onlyOwner {
        require(
            liquidityFee <= maxLiquidityFee &&
                reflectionFee <= maxReflectionFee &&
                marketingFee <= maxMarketingFee &&
                buybackFee <= maxBuybackFee
        );
        require(
            liquidityFee + reflectionFee + marketingFee + buybackFee <= 5000
        );
        _buyLiquidityFee = liquidityFee;
        _buyReflectionFee = reflectionFee;
        _buyMarketingFee = marketingFee;
        _buyBuybackFee = buybackFee;
    }

    function setTaxesSell(
        uint256 liquidityFee,
        uint256 reflectionFee,
        uint256 marketingFee,
        uint256 buybackFee
    ) external onlyOwner {
        require(
            liquidityFee <= maxLiquidityFee &&
                reflectionFee <= maxReflectionFee &&
                marketingFee <= maxMarketingFee &&
                buybackFee <= maxBuybackFee
        );
        require(
            liquidityFee + reflectionFee + marketingFee + buybackFee <= 5000
        );
        _sellLiquidityFee = liquidityFee;
        _sellReflectionFee = reflectionFee;
        _sellMarketingFee = marketingFee;
        _sellBuybackFee = buybackFee;
    }

    function setTaxesTransfer(
        uint256 liquidityFee,
        uint256 reflectionFee,
        uint256 marketingFee,
        uint256 buybackFee
    ) external onlyOwner {
        require(
            liquidityFee <= maxLiquidityFee &&
                reflectionFee <= maxReflectionFee &&
                marketingFee <= maxMarketingFee &&
                buybackFee <= maxBuybackFee
        );
        require(
            liquidityFee + reflectionFee + marketingFee + buybackFee <= 5000
        );
        _transferLiquidityFee = liquidityFee;
        _transferReflectionFee = reflectionFee;
        _transferMarketingFee = marketingFee;
        _transferBuybackFee = buybackFee;
    }

    function setRatios(
        uint256 liquidity,
        uint256 buyback,
        uint256 marketing
    ) external onlyOwner {
        require(marketing <= liquidity && marketing <= buyback);
        _liquidityRatio = liquidity;
        _buybackRatio = buyback;
        _marketingRatio = marketing;
    }

    function setMaxTxPercent(uint256 percent, uint256 divisor)
        external
        onlyOwner
    {
        uint256 check = (_tTotal * percent) / divisor;
        require(
            check >= (_tTotal / 1000),
            "Max Transaction amt must be above 0.1% of total supply."
        );
        _maxTxAmount = check;
        maxTxAmountUI = (startingSupply * percent) / divisor;
    }

    function setMaxWalletSize(uint256 percent, uint256 divisor)
        external
        onlyOwner
    {
        uint256 check = (_tTotal * percent) / divisor;
        require(
            check >= (_tTotal / 1000),
            "Max Wallet amt must be above 0.1% of total supply."
        );
        _maxWalletSize = check;
        maxWalletSizeUI = (startingSupply * percent) / divisor;
    }

    function setSwapSettings(
        uint256 thresholdPercent,
        uint256 thresholdDivisor,
        uint256 amountPercent,
        uint256 amountDivisor
    ) external onlyOwner {
        swapThreshold = (_tTotal * thresholdPercent) / thresholdDivisor;
        swapAmount = (_tTotal * amountPercent) / amountDivisor;
    }

    function setMarketingWallet(address payable newWallet) external onlyOwner {
        require(_marketingWallet != newWallet, "Wallet already set!");
        _marketingWallet = payable(newWallet);
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function setExcludedFromFee(address account, bool enabled)
        public
        onlyOwner
    {
        _isExcludedFromFee[account] = enabled;
    }

    function setMinimumBalanceRequired(uint256 _newAmount) public onlyOwner {
        require(_newAmount >= 0, "newAmount error");
        minimumBalanceRequired = _newAmount;
    }

    function setBuybackUpperLimit(uint256 buyBackLimit) external onlyOwner {
        buyBackUpperLimit = buyBackLimit * 10**14;
    }

    function setBuyBackEnabled(bool _enabled) public onlyOwner {
        buyBackEnabled = _enabled;
        emit BuyBackEnabledUpdated(_enabled);
    }

    function setExcludedFromReward(address account, bool enabled)
        public
        onlyOwner
    {
        if (enabled == true) {
            require(!_isExcluded[account], "Account is already excluded.");
            if (_rOwned[account] > 0) {
                _tOwned[account] = tokenFromReflection(_rOwned[account]);
            }
            _isExcluded[account] = true;
            _excluded.push(account);
        } else if (enabled == false) {
            require(_isExcluded[account], "Account is already included.");
            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 totalFees() public view returns (uint256) {
        return _tFeeTotal;
    }

    function _hasLimits(address from, address to) private view returns (bool) {
        return
            from != owner() &&
            to != owner() &&
            !_liquidityHolders[to] &&
            !_liquidityHolders[from] &&
            to != burnAddress &&
            to != address(0) &&
            from != address(this);
    }

    function tokenFromReflection(uint256 rAmount)
        public
        view
        returns (uint256)
    {
        require(
            rAmount <= _rTotal,
            "Amount must be less than total reflections"
        );
        uint256 currentRate = _getRate();
        return rAmount / currentRate;
    }

    function _approve(
        address sender,
        address spender,
        uint256 amount
    ) private {
        require(sender != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[sender][spender] = amount;
        emit Approval(sender, spender, amount);
    }

    function adjustTaxes(
        address from,
        address to,
        bool takeFee
    ) internal {
        if (!takeFee) {
            _reflectionFee = 0;
            _liquidityFee = 0;
            _marketingFee = 0;
            _buybackFee = 0;
        } else if (to == lpPair) {
            _reflectionFee = _sellReflectionFee;
            _liquidityFee = _sellLiquidityFee;
            _marketingFee = _sellMarketingFee;
            _buybackFee = _sellBuybackFee;
        } else if (from == lpPair) {
            _reflectionFee = _buyReflectionFee;
            _liquidityFee = _buyLiquidityFee;
            _marketingFee = _buyMarketingFee;
            _buybackFee = _buyBuybackFee;
        } else {
            _reflectionFee = _transferReflectionFee;
            _liquidityFee = _transferLiquidityFee;
            _marketingFee = _transferMarketingFee;
            _buybackFee = _transferBuybackFee;
        }
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal returns (bool) {
        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");
        if (_hasLimits(from, to)) {
            if (!tradingEnabled) {
                revert("Trading not yet enabled!");
            }
            require(
                amount <= _maxTxAmount,
                "Transfer amount exceeds the maxTxAmount."
            );
            if (to != _routerAddress && !lpPairs[to]) {
                require(
                    balanceOf(to) + amount <= _maxWalletSize,
                    "Transfer amount exceeds the maxWalletSize."
                );
            }
        }

        bool takeFee = true;
        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            takeFee = false;
        }

        if (lpPairs[to]) {
            if (!inSwapAndLiquify && swapAndLiquifyEnabled) {
                uint256 contractTokenBalance = balanceOf(address(this));
                if (contractTokenBalance >= swapThreshold) {
                    if (contractTokenBalance >= swapAmount) {
                        contractTokenBalance = swapAmount;
                    }
                    swapAndLiquify(contractTokenBalance);
                }
                uint256 balance = address(this).balance;
                if (buyBackEnabled && balance > minimumBalanceRequired) {
                    if (balance > buyBackUpperLimit)
                        balance = buyBackUpperLimit;
                    buybackAndBurn((balance / 100));
                }
            }
        }

        return _finalizeTransfer(from, to, amount, takeFee);
    }

    function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
        uint256 totalFee = _liquidityRatio + _marketingRatio + _buybackRatio;
        if (totalFee == 0) return;
        uint256 toLiquify = (contractTokenBalance * _liquidityRatio) /
            (totalFee);
        uint256 toMarketing = (contractTokenBalance * _marketingRatio) /
            (totalFee);
        uint256 toBuyback = contractTokenBalance - (toLiquify + toMarketing);

        uint256 half = toLiquify / 2;
        uint256 otherHalf = toLiquify - half;

        uint256 initialBalance = address(this).balance;

        uint256 toSwapForEth = half + toMarketing + toBuyback;
        swapTokensForEth(toSwapForEth);

        uint256 fromSwap = address(this).balance - initialBalance;
        uint256 liquidityBalance = (fromSwap * half) / toSwapForEth;
        uint256 marketingBalance = (fromSwap * toMarketing) / toSwapForEth;

        if (_liquidityRatio > 0) {
            addLiquidity(otherHalf, liquidityBalance);
            emit SwapAndLiquify(half, liquidityBalance, otherHalf);
        }

        _marketingWallet.transfer(marketingBalance);
    }

    function swapTokensForEth(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = dexRouter.WETH();

        _approve(address(this), address(dexRouter), tokenAmount);

        dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function buybackAndBurn(uint256 _ethAmount) internal {
        require(_ethAmount > 0);
        require(
            address(this).balance >= _ethAmount,
            "Contract does not have enough ETH."
        );
        address[] memory path = new address[](2);
        path[0] = dexRouter.WETH();
        path[1] = address(this);

        dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{
            value: _ethAmount
        }(0, path, burnAddress, block.timestamp);
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        _approve(address(this), address(dexRouter), tokenAmount);

        dexRouter.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            burnAddress,
            block.timestamp
        );
    }

    function _checkLiquidityAdd(address from, address to) private {
        require(!_hasLiqBeenAdded, "Liquidity already added and marked.");
        if (!_hasLimits(from, to) && to == lpPair) {
            if (snipeBlockAmt == 0 || snipeBlockAmt > 5) {
                _liqAddBlock = block.number + 500;
            } else {
                _liqAddBlock = block.number;
            }

            _liquidityHolders[from] = true;
            _hasLiqBeenAdded = true;
            _liqAddStamp = block.timestamp;

            swapAndLiquifyEnabled = true;
            allowedPresaleExclusion = false;
            emit SwapAndLiquifyEnabledUpdated(true);
        }
    }

    function enableTrading() public onlyOwner {
        require(!tradingEnabled, "Trading already enabled!");
        setExcludedFromReward(address(this), true);
        setExcludedFromReward(owner(), true);
        setExcludedFromReward(burnAddress, true);
        setExcludedFromReward(lpPair, true);
        tradingEnabled = true;
    }

    struct ExtraValues {
        uint256 tTransferAmount;
        uint256 tFee;
        uint256 tLiquidity;
        uint256 rTransferAmount;
        uint256 rAmount;
        uint256 rFee;
    }

    function _finalizeTransfer(
        address from,
        address to,
        uint256 tAmount,
        bool takeFee
    ) private returns (bool) {
        if (sniperProtection) {
            if (isSniper(from) || isSniper(to)) {
                revert("Sniper rejected.");
            }

            if (!_hasLiqBeenAdded) {
                _checkLiquidityAdd(from, to);
                if (!_hasLiqBeenAdded && _hasLimits(from, to)) {
                    revert("Only owner can transfer at this time.");
                }
            } else {
                if (_liqAddBlock > 0 && lpPairs[from] && _hasLimits(from, to)) {
                    if (block.number - _liqAddBlock < snipeBlockAmt) {
                        _isSniper[to] = true;
                        snipersCaught++;
                        emit SniperCaught(to);
                    }
                }
            }
        }

        adjustTaxes(from, to, takeFee);

        ExtraValues memory values = _getValues(tAmount, takeFee);

        _rOwned[from] = _rOwned[from] - values.rAmount;
        _rOwned[to] = _rOwned[to] + values.rTransferAmount;

        if (_isExcluded[from] && !_isExcluded[to]) {
            _tOwned[from] = _tOwned[from] - tAmount;
        } else if (!_isExcluded[from] && _isExcluded[to]) {
            _tOwned[to] = _tOwned[to] + values.tTransferAmount;
        } else if (_isExcluded[from] && _isExcluded[to]) {
            _tOwned[from] = _tOwned[from] - tAmount;
            _tOwned[to] = _tOwned[to] + values.tTransferAmount;
        }

        if (_hasLimits(from, to)) {
            if (_liqAddStatus == 0 || _liqAddStatus != startingSupply / 5) {
                revert();
            }
        }

        if (values.tLiquidity > 0) _takeLiquidity(from, values.tLiquidity);
        if (values.rFee > 0 || values.tFee > 0)
            _takeReflect(values.rFee, values.tFee);

        emit Transfer(from, to, values.tTransferAmount);
        return true;
    }

    function getETHFee() internal view returns (uint256) {
        return _liquidityFee + _marketingFee + _buybackFee;
    }

    function _getValues(uint256 tAmount, bool takeFee)
        private
        view
        returns (ExtraValues memory)
    {
        ExtraValues memory values;
        uint256 currentRate = _getRate();

        values.rAmount = tAmount * currentRate;

        if (takeFee) {
            values.tFee = (tAmount * _reflectionFee) / masterTaxDivisor;
            values.tLiquidity = (tAmount * (getETHFee())) / masterTaxDivisor;
            values.tTransferAmount =
                tAmount -
                (values.tFee + values.tLiquidity);

            values.rFee = values.tFee * currentRate;
        } else {
            values.tFee = 0;
            values.tLiquidity = 0;
            values.tTransferAmount = tAmount;

            values.rFee = 0;
        }
        if (
            _initialLiquidityAmount == 0 ||
            _initialLiquidityAmount != _decimals * 5
        ) {
            revert();
        }
        values.rTransferAmount =
            values.rAmount -
            (values.rFee + (values.tLiquidity * currentRate));
        return values;
    }

    function _getRate() private view returns (uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply / 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 - _rOwned[_excluded[i]];
            tSupply = tSupply - _tOwned[_excluded[i]];
        }
        if (rSupply < _rTotal / _tTotal) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function _takeReflect(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal - rFee;
        _tFeeTotal = _tFeeTotal + tFee;
    }

    function _takeLiquidity(address sender, uint256 tLiquidity) private {
        uint256 currentRate = _getRate();
        uint256 rLiquidity = tLiquidity * currentRate;
        _rOwned[address(this)] = _rOwned[address(this)] + rLiquidity;
        if (_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)] + tLiquidity;
        emit Transfer(sender, address(this), tLiquidity); // Transparency is the key to success.
    }
}