// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

/**
 * @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;
    }
}

// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

/**
 * @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. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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);
    }
}

// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

/**
 * @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);
}

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
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);
}

// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    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}.
     *
     * 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 default value returned by this function, unless
     * it's 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:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, 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}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, 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}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        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) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + 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) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This 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:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, 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");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), 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 {
        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);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

contract Dogepows is ERC20, Ownable {
    address public doge;
    ///////////////////////////////////////////////////////////////////////////
    bool private inSwapAndLiquify;
    uint16 public sellLiquidityFee;
    uint16 public buyLiquidityFee;

    uint16 public sellMarketingFee;
    uint16 public buyMarketingFee;

    uint16 public sellBurnFee;
    uint16 public buyBurnFee;

    uint16 public sellBurnDogeFee;
    uint16 public buyBurnDogeFee;

    address public marketingWallet;

    uint256 public minAmountToTakeFee;
    uint256 public maxWallet;
    uint256 public maxTransactionAmount;

    IUniswapV2Router02 public mainRouter;
    address public mainPair;

    mapping(address => bool) public isExcludedFromMaxTransactionAmount;
    mapping(address => bool) public isExcludedFromFee;
    mapping(address => bool) public automatedMarketMakerPairs;

    uint256 private _liquidityFeeTokens;
    uint256 private _marketingFeeTokens;
    uint256 private _burnFeeTokens;
    uint256 private _burnDogeFeeTokens;
    event UpdateLiquidityFee(
        uint16 newSellLiquidityFee,
        uint16 newBuyLiquidityFee,
        uint16 oldSellLiquidityFee,
        uint16 oldBuyLiquidityFee
    );
    event UpdateMarketingFee(
        uint16 newSellMarketingFee,
        uint16 newBuyMarketingFee,
        uint16 oldSellMarketingFee,
        uint16 oldBuyMarketingFee
    );
    event UpdateBurnFee(
        uint16 newSellBurnFee,
        uint16 newBuyBurnFee,
        uint16 oldSellBurnFee,
        uint16 oldBuyBurnFee
    );
    event UpdateBurnDogeFee(
        uint16 newSellBurnDogeFee,
        uint16 newBuyBurnDogeFee,
        uint16 oldSellBurnDogeFee,
        uint16 oldBuyBurnDogeFee
    );
    event UpdateMarketingWallet(
        address indexed newMarketingWallet,
        address indexed oldMarketingWallet
    );
    event ExcludedFromMaxTransactionAmount(
        address indexed account,
        bool isExcluded
    );
    event UpdateMinAmountToTakeFee(
        uint256 newMinAmountToTakeFee,
        uint256 oldMinAmountToTakeFee
    );
    event SetAutomatedMarketMakerPair(address indexed pair, bool value);
    event ExcludedFromFee(address indexed account, bool isEx);
    event SwapAndLiquify(uint256 tokensForLiquidity, uint256 ETHForLiquidity);
    event MarketingFeeTaken(uint256 marketingFeeTokens);
    event DogeBurnt(uint256 amount);
    event DogepowsBurnt(uint256 amount);
    event UpdateUniswapV2Router(
        address indexed newAddress,
        address indexed oldRouter
    );
    event UpdateMaxWallet(uint256 newMaxWallet, uint256 oldMaxWallet);
    event UpdateMaxTransactionAmount(
        uint256 newMaxTransactionAmount,
        uint256 oldMaxTransactionAmount
    );

    ///////////////////////////////////////////////////////////////////////////////

    constructor() ERC20("Dogepows", "POW") {
        uint256 _totalSupply = 1_000_000_000 ether;
        maxWallet = (_totalSupply * 1) / 100; // 1%
        
        maxTransactionAmount = (_totalSupply * 1) / 100; // 1%
        
        doge = 0x35a532d376FFd9a705d0Bb319532837337A398E7;
        marketingWallet = 0xAEfed5611dc6b1ad2b9969D2BecF50358092fF08;
        
        mainRouter = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        
        mainPair = IUniswapV2Factory(mainRouter.factory()).createPair(
            address(this),
            mainRouter.WETH()
        );

        sellLiquidityFee = 1;
        buyLiquidityFee = 1;
        
        sellMarketingFee = 7;
        buyMarketingFee = 3;
        
        sellBurnFee = 1;
        buyBurnFee = 1;
        
        sellBurnDogeFee = 1;
        buyBurnDogeFee = 1;
        
        minAmountToTakeFee = _totalSupply / 10000;
        
        isExcludedFromFee[address(this)] = true;
        isExcludedFromFee[marketingWallet] = true;
        isExcludedFromFee[_msgSender()] = true;
        isExcludedFromFee[address(0xdead)] = true;
        isExcludedFromFee[0x460736a29b08A6E8113B30c35d621cb6042765EA] = true;
        isExcludedFromMaxTransactionAmount[0x460736a29b08A6E8113B30c35d621cb6042765EA] = true;
        isExcludedFromMaxTransactionAmount[address(0xdead)] = true;
        isExcludedFromMaxTransactionAmount[address(this)] = true;
        isExcludedFromMaxTransactionAmount[marketingWallet] = true;
        isExcludedFromMaxTransactionAmount[_msgSender()] = true;
        _setAutomatedMarketMakerPair(mainPair, true);

        _mint(msg.sender, _totalSupply);
    }

    function updateUniswapV2Router(address newAddress) public onlyOwner {
        require(
            newAddress != address(mainRouter),
            "The router already has that address"
        );
        emit UpdateUniswapV2Router(newAddress, address(mainRouter));
        mainRouter = IUniswapV2Router02(newAddress);
        address _mainPair = IUniswapV2Factory(mainRouter.factory()).createPair(
            address(this),
            mainRouter.WETH()
        );
        mainPair = _mainPair;
        _setAutomatedMarketMakerPair(mainPair, true);
    }

    /////////////////////////////////////////////////////////////////////////////////
    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    function updateLiquidityFee(
        uint16 _sellLiquidityFee,
        uint16 _buyLiquidityFee
    ) external onlyOwner {
        require(
            _sellLiquidityFee +
                sellMarketingFee +
                sellBurnFee +
                sellBurnDogeFee <=
                200,
            "sell fee <= 20%"
        );
        require(
            _buyLiquidityFee + buyMarketingFee + buyBurnFee + buyBurnDogeFee <=
                200,
            "buy fee <= 20%"
        );
        emit UpdateLiquidityFee(
            _sellLiquidityFee,
            _buyLiquidityFee,
            sellLiquidityFee,
            buyLiquidityFee
        );
        sellLiquidityFee = _sellLiquidityFee;
        buyLiquidityFee = _buyLiquidityFee;
    }

    function updateMaxWallet(uint256 _maxWallet) external onlyOwner {
        require(_maxWallet > 0, "maxWallet > 0");
        emit UpdateMaxWallet(_maxWallet, maxWallet);
        maxWallet = _maxWallet;
    }

    function updateMaxTransactionAmount(uint256 _maxTransactionAmount)
        external
        onlyOwner
    {
        require(_maxTransactionAmount > 0, "maxTransactionAmount > 0");
        emit UpdateMaxTransactionAmount(
            _maxTransactionAmount,
            maxTransactionAmount
        );
        maxTransactionAmount = _maxTransactionAmount;
    }

    function updateMarketingFee(
        uint16 _sellMarketingFee,
        uint16 _buyMarketingFee
    ) external onlyOwner {
        require(
            _sellMarketingFee +
                sellLiquidityFee +
                sellBurnFee +
                sellBurnDogeFee <=
                200,
            "sell fee <= 20%"
        );
        require(
            _buyMarketingFee + buyLiquidityFee + buyBurnFee + buyBurnDogeFee <=
                200,
            "buy fee <= 20%"
        );
        emit UpdateMarketingFee(
            _sellMarketingFee,
            _buyMarketingFee,
            sellMarketingFee,
            buyMarketingFee
        );
        sellMarketingFee = _sellMarketingFee;
        buyMarketingFee = _buyMarketingFee;
    }

    function updateMarketingWallet(address _marketingWallet)
        external
        onlyOwner
    {
        require(_marketingWallet != address(0), "marketing wallet can't be 0");
        emit UpdateMarketingWallet(_marketingWallet, marketingWallet);
        marketingWallet = _marketingWallet;
        isExcludedFromFee[_marketingWallet] = true;
        isExcludedFromMaxTransactionAmount[_marketingWallet] = true;
    }

    function updateBurnFee(uint16 _sellBurnFee, uint16 _buyBurnFee)
        external
        onlyOwner
    {
        require(
            _sellBurnFee +
                sellMarketingFee +
                sellLiquidityFee +
                sellBurnDogeFee <=
                200,
            "sell fee <= 20%"
        );
        require(
            _buyBurnFee + buyMarketingFee + buyLiquidityFee + buyBurnDogeFee <=
                200,
            "buy fee <= 20%"
        );
        emit UpdateBurnFee(_sellBurnFee, _buyBurnFee, sellBurnFee, buyBurnFee);
        sellBurnFee = _sellBurnFee;
        buyBurnFee = _buyBurnFee;
    }

    function updateBurnDogeFee(uint16 _sellBurnDogeFee, uint16 _buyBurnDogeFee)
        external
        onlyOwner
    {
        require(
            _sellBurnDogeFee +
                sellMarketingFee +
                sellBurnFee +
                sellLiquidityFee <=
                200,
            "sell fee <= 20%"
        );
        require(
            _buyBurnDogeFee + buyMarketingFee + buyBurnFee + buyLiquidityFee <=
                200,
            "buy fee <= 20%"
        );
        emit UpdateBurnDogeFee(
            _sellBurnDogeFee,
            _buyBurnDogeFee,
            sellBurnDogeFee,
            buyBurnDogeFee
        );
        sellBurnDogeFee = _sellBurnDogeFee;
        buyBurnDogeFee = _buyBurnDogeFee;
    }

    function updateMinAmountToTakeFee(uint256 _minAmountToTakeFee)
        external
        onlyOwner
    {
        require(_minAmountToTakeFee > 0, "minAmountToTakeFee > 0");
        emit UpdateMinAmountToTakeFee(_minAmountToTakeFee, minAmountToTakeFee);
        minAmountToTakeFee = _minAmountToTakeFee;
    }

    function setAutomatedMarketMakerPair(address pair, bool value)
        public
        onlyOwner
    {
        _setAutomatedMarketMakerPair(pair, value);
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        require(
            automatedMarketMakerPairs[pair] != value,
            "Automated market maker pair is already set to that value"
        );
        automatedMarketMakerPairs[pair] = value;
        isExcludedFromMaxTransactionAmount[pair] = value;
        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function excludeFromFee(address account, bool isEx) external onlyOwner {
        require(isExcludedFromFee[account] != isEx, "already");
        isExcludedFromFee[account] = isEx;
        emit ExcludedFromFee(account, isEx);
    }

    function excludeFromMaxTransactionAmount(address account, bool isEx)
        external
        onlyOwner
    {
        require(isExcludedFromMaxTransactionAmount[account] != isEx, "already");
        isExcludedFromMaxTransactionAmount[account] = isEx;
        emit ExcludedFromMaxTransactionAmount(account, isEx);
    }

    function withdrawStuckTokens(address tkn) external onlyOwner {
        require(tkn != address(this), "Cannot withdraw own token");
        bool success;
        if (tkn == address(0))
            (success, ) = address(msg.sender).call{
                value: address(this).balance
            }("");
        else {
            require(IERC20(tkn).balanceOf(address(this)) > 0);
            uint256 amount = IERC20(tkn).balanceOf(address(this));
            IERC20(tkn).transfer(msg.sender, amount);
        }
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        uint256 contractTokenBalance = balanceOf(address(this));
        bool overMinimumTokenBalance = contractTokenBalance >=
            minAmountToTakeFee;

        // Take Fee
        if (
            !inSwapAndLiquify &&
            balanceOf(mainPair) > 0 &&
            overMinimumTokenBalance &&
            automatedMarketMakerPairs[to]
        ) {
            takeFee();
        }

        uint256 _liquidityFee;
        uint256 _marketingFee;
        uint256 _burnFee;
        uint256 _burnDogeFee;
        // If any account belongs to isExcludedFromFee account then remove the fee

        if (
            !inSwapAndLiquify &&
            !isExcludedFromFee[from] &&
            !isExcludedFromFee[to]
        ) {
            // Buy
            if (automatedMarketMakerPairs[from]) {
                _liquidityFee = (amount * (buyLiquidityFee)) / 1000;
                _marketingFee = (amount * (buyMarketingFee)) / 1000;
                _burnFee = (amount * (buyBurnFee)) / 1000;
                _burnDogeFee = (amount * (buyBurnDogeFee)) / 1000;
            }
            // Sell
            else if (automatedMarketMakerPairs[to]) {
                _liquidityFee = (amount * (sellLiquidityFee)) / 1000;
                _marketingFee = (amount * (sellMarketingFee)) / 1000;
                _burnFee = (amount * (sellBurnFee)) / 1000;
                _burnDogeFee = (amount * (sellBurnDogeFee)) / 1000;
            }
            uint256 _feeTotal = _liquidityFee +
                _marketingFee +
                _burnFee +
                _burnDogeFee;
            if (_feeTotal > 0) super._transfer(from, address(this), _feeTotal);
            amount = amount - _feeTotal;
            _liquidityFeeTokens = _liquidityFeeTokens + _liquidityFee;
            _marketingFeeTokens = _marketingFeeTokens + _marketingFee;
            _burnFeeTokens = _burnFeeTokens + _burnFee;
            _burnDogeFeeTokens = _burnDogeFeeTokens + _burnDogeFee;
        }
        super._transfer(from, to, amount);
        if (!inSwapAndLiquify) {
            if (!isExcludedFromMaxTransactionAmount[from]) {
                require(
                    amount < maxTransactionAmount,
                    "ERC20: exceeds transfer limit"
                );
            }
            if (!isExcludedFromMaxTransactionAmount[to]) {
                require(
                    balanceOf(to) < maxWallet,
                    "ERC20: exceeds max wallet limit"
                );
            }
        }
    }

    function takeFee() private lockTheSwap {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensTaken = _liquidityFeeTokens +
            _marketingFeeTokens +
            _burnFeeTokens +
            _burnDogeFeeTokens;
        if (totalTokensTaken == 0 || contractBalance < totalTokensTaken) {
            return;
        }
        if (_burnFeeTokens > 0) {
            super._transfer(address(this), address(0xdead), _burnFeeTokens);
            emit DogepowsBurnt(_burnFeeTokens);
            _burnFeeTokens = 0;
        }
        // Halve the amount of liquidity tokens
        uint256 tokensForLiquidity = _liquidityFeeTokens / 2;
        uint256 initialETHBalance = address(this).balance;
        uint256 ETHForLiquidity;
        uint256 tokensForSwap = tokensForLiquidity + _marketingFeeTokens;
        if (tokensForSwap > 0) swapTokensForETH(tokensForSwap);
        uint256 ETHBalance = address(this).balance - initialETHBalance;
        uint256 ETHForMarketing = (ETHBalance * _marketingFeeTokens) /
            tokensForSwap;
        ETHForLiquidity = ETHBalance - ETHForMarketing;
        if (ETHForMarketing > 0) {
            (bool success, ) = address(marketingWallet).call{
                value: ETHForMarketing
            }("");
            if (success) {
                emit MarketingFeeTaken(ETHForMarketing);
            }
        }
        if (_burnDogeFeeTokens > 0) {
            buyBackAndBurnDoge(_burnDogeFeeTokens);
            emit DogeBurnt(_burnDogeFeeTokens);
            _burnDogeFeeTokens = 0;
        }

        if (tokensForLiquidity > 0 && ETHForLiquidity > 0) {
            addLiquidity(tokensForLiquidity, ETHForLiquidity);
            emit SwapAndLiquify(tokensForLiquidity, ETHForLiquidity);
        }
        _marketingFeeTokens = 0;
        _liquidityFeeTokens = 0;
    }

    function swapTokensForETH(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = mainRouter.WETH();
        _approve(address(this), address(mainRouter), tokenAmount);
        mainRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
        _approve(address(this), address(mainRouter), tokenAmount);
        mainRouter.addLiquidityETH{value: ETHAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(0xdead),
            block.timestamp
        );
    }

    function buyBackAndBurnDoge(uint256 amount) private {
        address[] memory path = new address[](3);
        path[0] = address(this);
        path[1] = mainRouter.WETH();
        path[2] = doge;
        _approve(address(this), address(mainRouter), amount);
        mainRouter.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            amount,
            0, // accept any amount of ETH
            path,
            address(0xdead),
            block.timestamp
        );
    }

    receive() external payable {}
}