// File: @openzeppelin/contracts/access/Ownable.sol



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

pragma solidity ^0.8.0;

import "../utils/Context.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);
    }
}

// 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/AIX.sol



// SPDX-License-Identifier: MIT
/*
      db          `7MMF'    `YMM'   `MP'
     ;MM:           MM        VMb.  ,P
    ,V^MM.          IM         `MM.M'
   ,M  `MM          MM           MMb
   AbmmmqMA         MM         ,M'`Mb.
  A'     VML        MM        ,P   `MM.
.AMA.   .AMMA.    .JMML.    .MM:.  .:MMa.

AIgentX 🤖🧠: An innovative AI Ecosystem Enabling Improved Engagement and Project Oversight.

AIgentX is a dynamic AI ecosystem that harnesses advanced AI and ML technologies.
It utilizes custom business and project data to provide detailed, natural language responses, optimizing interactions,
and reducing costs while offering comprehensive AI solutions for businesses and
projects across platforms like Telegram and Discord. This ecosystem empowers users to create personalized AI
for improved community engagement, accurate project representation, customer satisfaction and sales growth.


Socials:
📝Twitter: https://twitter.com/0xAIgentx
✉️Telegram: https://t.me/+hWMgnOdPhG40Nzhl
🌐Website: https://aigentx.xyz/
📰Whitepaper: https://aigentx.gitbook.io/whitepaper/
📰Medium: https://medium.com/@0xaigentx
*/

pragma solidity 0.8.6;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";

/**
 * @title AIX Token Contract
 */
contract AIX is IERC20Metadata, Ownable, ERC20 {
    /**
     * Sniper Bot and Malicious Actor Protection during the launch stage:
     * The AIX token employs strategies against sniper bots and malicious users:
     *
     * 1. Selling Fee:
     * - Temporarily sets a 100% selling fee to prevent buying from sniper-bots.
     * - After the launch, disabled by the owner, this cannot be reactivated.
     *
     * 2. Blacklist:
     * - During the launch addresses can be blacklisted.
     * - After the launch, blacklisting is permanently disabled.
     *
     * These mechanisms promote price stability and protect genuine investors.
     *
     * After the launch stage:
     * - Users cannot be blacklisted.
     * - buyFee and sellFee must be <= 5%.
     */

    /// @notice Emitted when a liquidity pool pair is updated.
    event LPPairSet(address indexed pair, bool enabled);

    /// @notice Emitted when an account is marked or unmarked as a liquidity holder (treasury, staking, etc).
    event LiquidityHolderSet(address indexed account, bool flag);

    /// @notice Emitted (once) when fees are locked forever.
    event FeesLockedForever();

    /// @notice Emitted (once) when sniper bot protection is disabled forever.
    event SniperBotProtectionDisabledForever();

    event BlacklistSet(address indexed account, bool flag);

    /// @notice Emitted (once) when blacklist add is restricted forever.
    event BlacklistAddRestrictedForever();

    event BuyFeeNumeratorSet(uint256 value);
    event SellFeeNumeratorSet(uint256 value);
    event TreasurySet(address treasury);
    event BuyFeePaid(address indexed from, address indexed to, uint256 amount);
    event SellFeePaid(address indexed from, address indexed to, uint256 amount);

    /**
     * @dev Struct to group account-specific flags to optimize storage usage.
     * This design pattern leverages Solidity's storage layout, where multiple
     * state variables of the same type are packed into a single storage slot
     * to minimize gas costs.
     *
     *   +-------------------- bytes32 slot ------------------------------+
     *   | 0 | 0 | 0 | ... | isBlackListed | isLiquidityHolder | isLPPool |
     *   +----------------------------------------------------------------+
     *
     * For a deeper understanding of storage packing and its benefits, you can refer to:
     * - https://docs.soliditylang.org/en/latest/internals/layout_in_storage.html
     * - https://dev.to/web3_ruud/advance-soliditymastering-storage-slot-c38
     */
    struct AccountInfo {
        bool isLPPool;
        bool isLiquidityHolder;
        bool isBlackListed;
    }
    mapping (address => AccountInfo) public accountInfo;

    string constant private _name = "AIgentX";
    string constant private _symbol = "AIX";
    uint256 constant private TOTAL_SUPPLY = 100_000_000 * (10 ** 18);

    uint256 constant public DENOMINATOR = 10000;
    uint256 constant public MAX_BUY_FEE_NUMERATOR = 500;  // 5%
    uint256 constant public MAX_SELL_FEE_NUMERATOR = 500;  // 5%
    uint256 public buyFeeNumerator;
    uint256 public _sellFeeNumerator;
    address public treasury;
    bool public feesAreLockedForever;
    bool public sniperBotProtectionDisabledForever;
    bool public blacklistAddRestrictedForever;

    constructor(
        address _treasury,
        uint256 _buyFeeNumeratorValue,
        uint256 _sellFeeNumeratorValue
    ) Ownable() ERC20(_name, _symbol) {
        _mint(msg.sender, TOTAL_SUPPLY);
        setLiquidityHolder(msg.sender, true);
        setLiquidityHolder(_treasury, true);
        setTreasury(_treasury);
        setBuyFeeNumerator(_buyFeeNumeratorValue);
        setSellFeeNumerator(_sellFeeNumeratorValue);
    }

    function setTreasury(address _treasury) public onlyOwner {
        require(_treasury != address(0), "Treasury address cannot be zero");
        treasury = _treasury;
        emit TreasurySet(_treasury);
    }

    function lockFeesForever() external onlyOwner {
        require(!feesAreLockedForever, "already set");
        feesAreLockedForever = true;
        emit FeesLockedForever();
    }

    function restrictBlacklistAddForever() external onlyOwner {
        require(!blacklistAddRestrictedForever, "already set");
        blacklistAddRestrictedForever = true;
        emit BlacklistAddRestrictedForever();
    }

    function setLpPair(address pair, bool enabled) external onlyOwner {
        accountInfo[pair].isLPPool = enabled;
        emit LPPairSet(pair, enabled);
    }

    function setBlacklisted(address account, bool isBlacklisted) external onlyOwner {
        if (isBlacklisted) {
            require(!blacklistAddRestrictedForever, "Blacklist add restricted forever");
        }
        accountInfo[account].isBlackListed = isBlacklisted;
        emit BlacklistSet(account, isBlacklisted);
    }

    function setBuyFeeNumerator(uint256 value) public onlyOwner {
        require(!feesAreLockedForever, "Fees are locked forever");
        require(value <= MAX_BUY_FEE_NUMERATOR, "Exceeds maximum buy fee");
        buyFeeNumerator = value;
        emit BuyFeeNumeratorSet(value);
    }

    function setSellFeeNumerator(uint256 value) public onlyOwner {
        require(!feesAreLockedForever, "Fees are locked forever");
        require(value <= MAX_SELL_FEE_NUMERATOR, "Exceeds maximum buy fee");
        _sellFeeNumerator = value;
        emit SellFeeNumeratorSet(value);
    }

    function sellFeeNumerator() public view returns(uint256) {
        if (sniperBotProtectionDisabledForever) {
            return _sellFeeNumerator;
        }
        return DENOMINATOR;  // 100% to prevent sniper bots from buying
    }

    function disableSniperBotProtectionForever() external onlyOwner {
        require(!sniperBotProtectionDisabledForever, "already set");
        sniperBotProtectionDisabledForever = true;
        emit SniperBotProtectionDisabledForever();
    }

    function setLiquidityHolder(address account, bool flag) public onlyOwner {
        accountInfo[account].isLiquidityHolder = flag;
        emit LiquidityHolderSet(account, flag);
    }

    function _hasLimits(AccountInfo memory fromInfo, AccountInfo memory toInfo) internal pure returns(bool) {
        return !fromInfo.isLiquidityHolder && !toInfo.isLiquidityHolder;
    }

    function _transfer(address from, address to, uint256 amount) internal override {
        AccountInfo memory fromInfo = accountInfo[from];
        AccountInfo memory toInfo = accountInfo[to];

        require(!fromInfo.isBlackListed && !toInfo.isBlackListed, "Blacklisted");

        if (!_hasLimits(fromInfo, toInfo) ||
            (fromInfo.isLPPool && toInfo.isLPPool)  // no fee for transferring between pools
        ) {
            super._transfer(from, to, amount);
            return;
        }

        if (fromInfo.isLPPool) {
            // buy
            uint256 buyFeeAmount = amount * buyFeeNumerator / DENOMINATOR;
            emit BuyFeePaid(from, treasury, buyFeeAmount);
            super._transfer(from, treasury, buyFeeAmount);
            unchecked {  // underflow is not possible
                amount -= buyFeeAmount;
            }
        } else if (toInfo.isLPPool) {
            // sell
            uint256 sellFeeAmount = amount * sellFeeNumerator() / DENOMINATOR;
            emit SellFeePaid(from, treasury, sellFeeAmount);
            super._transfer(from, treasury, sellFeeAmount);
            unchecked {  // underflow is not possible
                amount -= sellFeeAmount;
            }
        } else {
            // no fees for usual transfers
        }

        super._transfer(from, to, amount);
    }
}