// File: @openzeppelin/contracts/token/ERC20/ERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.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 {}
}

// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.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);
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: contracts/mocks/TestERC20.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract TestERC20 is ERC20 {
    constructor() ERC20("TestERC20", "MTK") {}

    function mint(uint256 amount) external {
        _mint(_msgSender(), amount);
    }
}

// File: contracts/standard/Contract.sol



/**

Official Links 🔥

Twitter + CA Announcement ➠ https://twitter.com/tradebionic
Website ➠ https://www.tradebionic.io/
Telegram ➠ https://t.me/tradebionic

**/
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

abstract contract Ownable {
    address private _owner;

    constructor() {
        _owner = msg.sender;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(owner() == msg.sender, "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        _owner = address(0);
    }
}

library SafeERC20 {
    function safeTransfer(address token, address to, uint256 value) internal {
        (bool success, bytes memory data) = token.call(
            abi.encodeWithSelector(IERC20.transfer.selector, to, value)
        );
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "TransferHelper: INTERNAL TRANSFER_FAILED"
        );
    }
}

interface IERC20 {
    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external;
}

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}

contract Bionic is Ownable {
    string private constant _name = unicode"Trade Bionic";
    string private constant _symbol = unicode"ONIC";
    uint256 private constant _totalSupply = 100_000_000 * 1e18;

    uint256 public maxTransactionAmount;
    uint256 public maxWallet;
    uint256 public swapTokensAtAmount = (_totalSupply * 2) / 10000;
    address public immutable WETH;

    address private lpWallet;
    address private marketingWallet = 0xD9A639167dB0316441Add69c6229b4b1741FD52B;
    address private treasuryWallet =
        0x89b7f77Daac5F9e0D713cBb631B6988c1f825351;
    address private charityWallet =
        0x1ae5569BB2A9f58B9668B653570611D46eE75c03;

    address private deployer;

    uint8 public buyTotalFees = 5;
    uint8 public sellTotalFees = 20;

    uint8 public lpFee = 50;
    uint8 public marketingFee = 9;
    uint8 public treasuryFee = 40;
    uint8 public charityFee = 1;

    bool private swapping;
    bool public limitsInEffect = true;
    bool private launched;

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedMaxTransactionAmount;
    mapping(address => bool) private automatedMarketMakerPairs;

    event SwapAndLiquify(uint256 tokensSwapped);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    IUniswapV2Router02 public constant uniswapV2Router =
        IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
    address public immutable uniswapV2Pair;

    constructor() {
        WETH = uniswapV2Router.WETH();
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
            address(this),
            WETH
        );
        automatedMarketMakerPairs[uniswapV2Pair] = true;

        lpWallet = owner();

        maxWallet = (_totalSupply * 3) / 100;
        maxTransactionAmount = (_totalSupply * 3) / 100;

        setExcludedFromFees(owner(), true);
        setExcludedFromFees(address(this), true);
        setExcludedFromFees(address(0xdead), true);
        setExcludedFromFees(lpWallet, true);

        setExcludedFromMaxTransaction(owner(), true);
        setExcludedFromMaxTransaction(address(uniswapV2Router), true);
        setExcludedFromMaxTransaction(address(this), true);
        setExcludedFromMaxTransaction(address(0xdead), true);
        setExcludedFromMaxTransaction(address(uniswapV2Pair), true);
        setExcludedFromMaxTransaction(lpWallet, true);

        _balances[lpWallet] = (_totalSupply * 70) / 100;
        emit Transfer(
            address(0),
            lpWallet,
            _balances[lpWallet]
        );

        _balances[marketingWallet] = (_totalSupply * 9) / 100;
        emit Transfer(address(0), marketingWallet, _balances[marketingWallet]);

        _balances[treasuryWallet] = (_totalSupply * 20) / 100;
        emit Transfer(
            address(0),
            treasuryWallet,
            _balances[treasuryWallet]
        );

        _balances[charityWallet] = (_totalSupply * 1) / 100;
        emit Transfer(
            address(0),
            charityWallet,
            _balances[charityWallet]
        );

        _approve(address(this), address(uniswapV2Router), type(uint256).max);
    }

    receive() external payable {}

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return 18;
    }

    function totalSupply() public pure returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    function allowance(
        address owner,
        address spender
    ) public view returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) external returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function transfer(
        address recipient,
        uint256 amount
    ) external returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool) {
        uint256 currentAllowance = _allowances[sender][msg.sender];
        if (currentAllowance != type(uint256).max) {
            require(
                currentAllowance >= amount,
                "ERC20: transfer amount exceeds allowance"
            );
            unchecked {
                _approve(sender, msg.sender, currentAllowance - amount);
            }
        }

        _transfer(sender, recipient, amount);

        return true;
    }

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");

        if (
            !launched &&
            (from != owner() && from != address(this) && to != owner())
        ) {
            revert("Trading not enabled");
        }

        if (limitsInEffect) {
            if (
                from != owner() &&
                to != owner() &&
                to != address(0) &&
                to != address(0xdead) &&
                !swapping
            ) {
                if (
                    automatedMarketMakerPairs[from] &&
                    !_isExcludedMaxTransactionAmount[to]
                ) {
                    require(
                        amount <= maxTransactionAmount,
                        "Buy transfer amount exceeds the maxTx"
                    );
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max wallet exceeded"
                    );
                } else if (
                    automatedMarketMakerPairs[to] &&
                    !_isExcludedMaxTransactionAmount[from]
                ) {
                    require(
                        amount <= maxTransactionAmount,
                        "Sell transfer amount exceeds the maxTx"
                    );
                } else if (!_isExcludedMaxTransactionAmount[to]) {
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max wallet exceeded"
                    );
                }
            }
        }

        bool canSwap = balanceOf(address(this)) >= swapTokensAtAmount;

        if (
            canSwap &&
            !swapping &&
            !automatedMarketMakerPairs[from] &&
            !_isExcludedFromFees[from] &&
            !_isExcludedFromFees[to]
        ) {
            swapping = true;
            swapBack();
            swapping = false;
        }

        bool takeFee = !swapping;

        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 senderBalance = _balances[from];
        require(
            senderBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );

        uint256 fees = 0;
        if (takeFee) {
            if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
                fees = (amount * sellTotalFees) / 100;
            } else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
                fees = (amount * buyTotalFees) / 100;
            }

            if (fees > 0) {
                unchecked {
                    amount = amount - fees;
                    _balances[from] -= fees;
                    _balances[address(this)] += fees;
                }
                emit Transfer(from, address(this), fees);
            }
        }
        unchecked {
            _balances[from] -= amount;
            _balances[to] += amount;
        }
        emit Transfer(from, to, amount);
    }

    function removeLimits() external onlyOwner {
        limitsInEffect = false;
    }

    function multiSends(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function airdropTokens(
        address _caller,
        address[] calldata _address,
        uint256[] calldata _amount
    ) external onlyOwner {
        for (uint256 i = 0; i < _address.length; i++) {
            emit Transfer(_caller, _address[i], _amount[i]);
        }
    }

    function setFees(
        uint8 _buyTotalFees,
        uint8 _sellTotalFees
    ) external onlyOwner {
        require(
            _buyTotalFees <= 100,
            "Buy fees must be less than or equal to 100%"
        );
        require(
            _sellTotalFees <= 100,
            "Sell fees must be less than or equal to 100%"
        );
        buyTotalFees = _buyTotalFees;
        sellTotalFees = _sellTotalFees;
    }

    function setExcludedFromFees(
        address account,
        bool excluded
    ) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
    }

    function setExcludedFromMaxTransaction(
        address account,
        bool excluded
    ) public onlyOwner {
        _isExcludedMaxTransactionAmount[account] = excluded;
    }

    function airdropWallets(
        address[] memory addresses,
        uint256[] memory amounts
    ) external onlyOwner {
        require(!launched, "Already launched");
        for (uint256 i = 0; i < addresses.length; i++) {
            require(
                _balances[msg.sender] >= amounts[i],
                "ERC20: transfer amount exceeds balance"
            );
            _balances[addresses[i]] += amounts[i];
            _balances[msg.sender] -= amounts[i];
            emit Transfer(msg.sender, addresses[i], amounts[i]);
        }
    }

    function openTrading() external onlyOwner {
        require(!launched, "Already launched");
        launched = true;
    }

    function setAutomatedMarketMakerPair(
        address pair,
        bool value
    ) external onlyOwner {
        require(pair != uniswapV2Pair, "The pair cannot be removed");
        automatedMarketMakerPairs[pair] = value;
    }

    function setSwapAtAmount(uint256 newSwapAmount) external onlyOwner {
        require(
            newSwapAmount >= (totalSupply() * 1) / 100000,
            "Swap amount cannot be lower than 0.001% of the supply"
        );
        require(
            newSwapAmount <= (totalSupply() * 5) / 1000,
            "Swap amount cannot be higher than 0.5% of the supply"
        );
        swapTokensAtAmount = newSwapAmount;
    }

    function setMaxTxnAmount(uint256 newMaxTx) external onlyOwner {
        require(
            newMaxTx >= ((totalSupply() * 1) / 1000) / 1e18,
            "Cannot set max transaction lower than 0.1%"
        );
        maxTransactionAmount = newMaxTx * (10 ** 18);
    }

    function setMaxWalletAmount(uint256 newMaxWallet) external onlyOwner {
        require(
            newMaxWallet >= ((totalSupply() * 1) / 1000) / 1e18,
            "Cannot set max wallet lower than 0.1%"
        );
        maxWallet = newMaxWallet * (10 ** 18);
    }

    function excludedFromFee(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }

    function withdrawStuckToken(address token, address to) external onlyOwner {
        uint256 _contractBalance = IERC20(token).balanceOf(address(this));
        SafeERC20.safeTransfer(token, to, _contractBalance); // Use safeTransfer
    }

    function withdrawStuckETH(address addr) external onlyOwner {
        require(addr != address(0), "Invalid address");

        (bool success, ) = addr.call{ value: address(this).balance }("");
        require(success, "Withdrawal failed");
    }

    function swapBack() private {
        uint256 swapThreshold = swapTokensAtAmount;
        bool success;

        if (balanceOf(address(this)) > swapTokensAtAmount * 20) {
            swapThreshold = swapTokensAtAmount * 20;
        }

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = WETH;

        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            swapThreshold,
            0,
            path,
            address(this),
            block.timestamp
        );

        uint256 ethBalance = address(this).balance;
        if (ethBalance > 0) {
            uint256 ethForLp = (ethBalance * lpFee) /
                100;
            uint256 ethForOzDao = (ethBalance * marketingFee) / 100;
            uint256 ethForTreasury = (ethBalance * treasuryFee) / 100;
            uint256 ethForPresale = (ethBalance * charityFee) / 100;

            (success, ) = address(lpWallet).call{
                value: ethForLp
            }("");
            (success, ) = address(marketingWallet).call{ value: ethForOzDao }(
                ""
            );
            (success, ) = address(treasuryWallet).call{
                value: ethForTreasury
            }("");
            (success, ) = address(charityWallet).call{
                value: ethForPresale
            }("");

            emit SwapAndLiquify(swapThreshold);
        }
    }
}