// File: contracts/NativeAi.sol



// SPDX-License-Identifier: MIT
/*
  
         _             _                 _          _    _          _       _               _                    _     
        /\ \     _    / /\              /\ \       /\ \ /\ \    _ / /\     /\ \            / /\                 /\ \   
       /  \ \   /\_\ / /  \             \_\ \      \ \ \\ \ \  /_/ / /    /  \ \          / /  \                \ \ \  
      / /\ \ \_/ / // / /\ \            /\__ \     /\ \_\\ \ \ \___\/    / /\ \ \        / / /\ \               /\ \_\ 
     / / /\ \___/ // / /\ \ \          / /_ \ \   / /\/_// / /  \ \ \   / / /\ \_\      / / /\ \ \             / /\/_/ 
    / / /  \/____// / /  \ \ \        / / /\ \ \ / / /   \ \ \   \_\ \ / /_/_ \/_/     / / /  \ \ \           / / /    
   / / /    / / // / /___/ /\ \      / / /  \/_// / /     \ \ \  / / // /____/\       / / /___/ /\ \         / / /     
  / / /    / / // / /_____/ /\ \    / / /      / / /       \ \ \/ / // /\____\/      / / /_____/ /\ \       / / /      
 / / /    / / // /_________/\ \ \  / / /   ___/ / /__       \ \ \/ // / /______     / /_________/\ \ \  ___/ / /__     
/ / /    / / // / /_       __\ \_\/_/ /   /\__\/_/___\       \ \  // / /_______\   / / /_       __\ \_\/\__\/_/___\    
\/_/     \/_/ \_\___\     /____/_/\_\/    \/_________/        \_\/ \/__________/   \_\___\     /____/_/\/_________/    
                                                                                                                       

// +─────────+──────────────────────────────────────────────────────────+
// | NAME    | NATIVE AI                                                |
// +─────────+──────────────────────────────────────────────────────────+
// | TOKEN   | NAI                                                      |
// +─────────+──────────────────────────────────────────────────────────+
// | WEBSITE | https://nativeai.io                                      |
// +─────────+──────────────────────────────────────────────────────────+
// | TELEGRAM| https://t.me/NativeAIPortal                              |
// +─────────+──────────────────────────────────────────────────────────+
// | MISSION | Native token interacts with AI to deliver unparalleled   |
// |         | benefits to its holders. Our token leverages the power of|
// |         | artificial intelligence to provide real-time insights,   |
// |         | automate processes, and enhance security, making it the  |
// |         | preferred choice for investors and traders alike.        |
// +─────────+──────────────────────────────────────────────────────────+
// | VISION  | reate a seamless and secure platform that provides       |
// |         | personalized recommendations and market analysis, helping|
// |         | users make informed investment decisions.                |
// +─────────+──────────────────────────────────────────────────────────+
// | VALUES  | Community · Utility · Impact                             |
// +─────────+──────────────────────────────────────────────────────────+
// | TOKEN   | TOTAL SUPPLY | 100,000,000                               |
// |         | LAUNCH       | STEALTH                                   |
// |         | MAX WALLET   | 2%                                        |
// |         | TAX          | 5/5                                       |
// +─────────+──────────────────────────────────────────────────────────+
 */
pragma solidity 0.8.17;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount)
        external
        returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

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;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account)
        public
        view
        virtual
        override
        returns (uint256)
    {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender)
        public
        view
        virtual
        override
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(
            currentAllowance >= amount,
            "ERC20: transfer amount exceeds allowance"
        );
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender] + addedValue
        );
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        returns (bool)
    {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        uint256 senderBalance = _balances[sender];
        require(
            senderBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    function _createInitialSupply(address account, uint256 amount)
        internal
        virtual
    {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    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);
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership(bool confirmRenounce)
        external
        virtual
        onlyOwner
    {
        require(confirmRenounce, "Please confirm renounce!");
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface ILpPair {
    function sync() external;
}

interface IDexRouter {
    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 swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);
}

interface IDexFactory {
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

interface IChatGPT {
    function getResponse(string memory _input) external view returns (bytes32);
}

contract AIInteractor {
    IChatGPT public chatGPT;
    string public chatGPTAPI;

    function setChatGPTAPI(string memory _api) public {
        chatGPTAPI = _api;
    }

    function getResponse(string memory _input) public view returns (bytes32) {
        return chatGPT.getResponse(_input);
    }
}

contract NativeAi is ERC20, Ownable, AIInteractor {
    uint256 public maxBuyAmount;
    uint256 public maxSellAmount;
    uint256 public maxWallet;

    IDexRouter public dexRouter;

    address public lpPair;

    bool private swapping;
    uint256 public swapTokensAtAmount;

    address public devAddress;
    address public servicesAddress;

    uint256 public tradingActiveBlock = 0; // 0 means trading is not active
    uint256 public blockForPenaltyEnd;
    mapping(address => bool) public boughtEarly;
    address[] public earlyBuyers;
    uint256 public botsCaught;

    bool public limitsInEffect = true;
    bool public tradingActive = false;
    bool public swapEnabled = false;

    // Anti-bot and anti-whale mappings and variables
    mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch

    mapping(address => string[]) public interactionHistory;

    // Store the time of interaction
    mapping(address => uint[]) public interactionTime;

    mapping(address => uint) userData;

    bool public transferDelayEnabled = true;

    uint256 public buyTotalFees;
    uint256 public buyDevFee;
    uint256 public buyLiquidityFee;
    uint256 public buyServicesFee;

    uint256 private originalSellDevFee;
    uint256 private originalSellLiquidityFee;
    uint256 private originalSellServicesFee;

    uint256 public sellTotalFees;
    uint256 public sellDevFee;
    uint256 public sellLiquidityFee;
    uint256 public sellServicesFee;

    uint256 public tokensForDev;
    uint256 public tokensForLiquidity;
    uint256 public tokensForServices;
    bool public sellingEnabled = true;
    bool public highTaxModeEnabled = true;
    bool public markBotsEnabled = true;

    /******************/

    // exlcude from fees and max transaction amount
    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) public _isExcludedMaxTransactionAmount;

    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
    // could be subject to a maximum transfer amount
    mapping(address => bool) public automatedMarketMakerPairs;

    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

    event EnabledTrading();

    event ExcludeFromFees(address indexed account, bool isExcluded);

    event UpdatedMaxBuyAmount(uint256 newAmount);

    event UpdatedMaxSellAmount(uint256 newAmount);

    event UpdatedMaxWalletAmount(uint256 newAmount);

    event UpdatedDevAddress(address indexed newWallet);

    event UpdatedServicesAddress(address indexed newWallet);

    event MaxTransactionExclusion(address _address, bool excluded);

    event OwnerForcedSwapBack(uint256 timestamp);

    event CaughtEarlyBuyer(address sniper);

    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiquidity
    );

    event TransferForeignToken(address token, uint256 amount);

    event UpdatedPrivateMaxSell(uint256 amount);

    event EnabledSelling();

    event DisabledHighTaxModeForever();

    constructor() payable ERC20("Native AI", "NAI") {
        address newOwner = msg.sender; // can leave alone if owner is deployer.

        address _dexRouter;

        if (block.chainid == 1) {
            _dexRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH: Uniswap V2
        } else if (block.chainid == 5) {
            _dexRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH: GOERLI
        } else {
            revert("Chain not configured");
        }

        // initialize router
        dexRouter = IDexRouter(_dexRouter);

        // create pair
        lpPair = IDexFactory(dexRouter.factory()).createPair(
            address(this),
            dexRouter.WETH()
        );
        _excludeFromMaxTransaction(address(lpPair), true);
        _setAutomatedMarketMakerPair(address(lpPair), true);

        uint256 totalSupply = 100 * 1e6 * 1e18; // 100 million

        maxBuyAmount = (totalSupply * 1) / 100; // 1%
        maxSellAmount = (totalSupply * 1) / 100; // 1%
        maxWallet = (totalSupply * 2) / 100; // 2%
        swapTokensAtAmount = (totalSupply * 5) / 10000; // 0.05 %

        buyDevFee = 90;
        buyLiquidityFee = 0;
        buyServicesFee = 0;
        buyTotalFees = buyDevFee + buyLiquidityFee + buyServicesFee;

        originalSellDevFee = 2;
        originalSellLiquidityFee = 0;
        originalSellServicesFee = 3;

        sellDevFee = 90;
        sellLiquidityFee = 0;
        sellServicesFee = 0;
        sellTotalFees = sellDevFee + sellLiquidityFee + sellServicesFee;

        devAddress = address(msg.sender);
        servicesAddress = address(0x8AdBB586108AD5d300E403B664A0abe25d9c2E73);

        _excludeFromMaxTransaction(newOwner, true);
        _excludeFromMaxTransaction(address(this), true);
        _excludeFromMaxTransaction(address(0xdead), true);
        _excludeFromMaxTransaction(address(devAddress), true);
        _excludeFromMaxTransaction(address(servicesAddress), true);
        _excludeFromMaxTransaction(address(dexRouter), true);

        excludeFromFees(newOwner, true);
        excludeFromFees(address(this), true);
        excludeFromFees(address(0xdead), true);
        excludeFromFees(address(devAddress), true);
        excludeFromFees(address(servicesAddress), true);
        excludeFromFees(address(dexRouter), true);

        _createInitialSupply(address(this), totalSupply); // Tokens for liquidity

        transferOwnership(newOwner);
    }

    receive() external payable {}

    // AI Engine function
    function aiEngine(uint256 _value, string memory _input) view public returns (uint) {
        // Call the ChatGPT instance to process the user data
        bytes32 result = chatGPT.getResponse(_input);
        return uint(result);
    }

    // Interact with AI
    function interactWithAI(uint256 _value, string memory _input) public {
        require(balanceOf(msg.sender) >= _value, "Insufficient funds");
        // Deduct the token from user's balance with tax
        // Call the AI engine to process the user data
        // Store the result in userData mapping
        userData[msg.sender] = aiEngine(_value, _input);
        // Store the interaction history
        interactionHistory[msg.sender].push(_input);
        interactionTime[msg.sender].push(block.timestamp);
    }

    function enableTrading(uint256 blocksForPenalty) external onlyOwner {
        require(!tradingActive, "Cannot reenable trading");
        require(
            blocksForPenalty <= 10,
            "Cannot make penalty blocks more than 10"
        );
        tradingActive = true;
        swapEnabled = true;
        tradingActiveBlock = block.number;
        blockForPenaltyEnd = tradingActiveBlock + blocksForPenalty;
        emit EnabledTrading();
    }
   
    function getEarlyBuyers() external view returns (address[] memory) {
        return earlyBuyers;
    }

    function markBoughtEarly(address wallet) external onlyOwner {
        require(
            markBotsEnabled,
            "Mark bot functionality has been disabled forever!"
        );
        require(!boughtEarly[wallet], "Wallet is already flagged.");
        boughtEarly[wallet] = true;
    }

    function removeBoughtEarly(address wallet) external onlyOwner {
        require(boughtEarly[wallet], "Wallet is already not flagged.");
        boughtEarly[wallet] = false;
    }

    function emergencyUpdateRouter(address router) external onlyOwner {
        require(!tradingActive, "Cannot update after trading is functional");
        dexRouter = IDexRouter(router);
    }

    // disable Transfer delay - cannot be reenabled
    function disableTransferDelay() external onlyOwner {
        transferDelayEnabled = false;
    }

    function updateMaxBuyAmount(uint256 newNum) external onlyOwner {
        require(
            newNum >= ((totalSupply() * 5) / 1000) / 1e18,
            "Cannot set max buy amount lower than 0.5%"
        );
        require(
            newNum <= ((totalSupply() * 2) / 100) / 1e18,
            "Cannot set buy sell amount higher than 2%"
        );
        maxBuyAmount = newNum * (10**18);
        emit UpdatedMaxBuyAmount(maxBuyAmount);
    }

    function updateMaxSellAmount(uint256 newNum) external onlyOwner {
        require(
            newNum >= ((totalSupply() * 5) / 1000) / 1e18,
            "Cannot set max sell amount lower than 0.5%"
        );
        require(
            newNum <= ((totalSupply() * 2) / 100) / 1e18,
            "Cannot set max sell amount higher than 2%"
        );
        maxSellAmount = newNum * (10**18);
        emit UpdatedMaxSellAmount(maxSellAmount);
    }

    function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
        require(
            newNum >= ((totalSupply() * 5) / 1000) / 1e18,
            "Cannot set max wallet amount lower than 0.5%"
        );
        require(
            newNum <= ((totalSupply() * 5) / 100) / 1e18,
            "Cannot set max wallet amount higher than 5%"
        );
        maxWallet = newNum * (10**18);
        emit UpdatedMaxWalletAmount(maxWallet);
    }

    // change the minimum amount of tokens to sell from fees
    function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner {
        require(
            newAmount >= (totalSupply() * 1) / 100000,
            "Swap amount cannot be lower than 0.001% total supply."
        );
        require(
            newAmount <= (totalSupply() * 1) / 1000,
            "Swap amount cannot be higher than 0.1% total supply."
        );
        swapTokensAtAmount = newAmount;
    }

    function _excludeFromMaxTransaction(address updAds, bool isExcluded)
        private
    {
        _isExcludedMaxTransactionAmount[updAds] = isExcluded;
        emit MaxTransactionExclusion(updAds, isExcluded);
    }

    function excludeFromMaxTransaction(address updAds, bool isEx)
        external
        onlyOwner
    {
        if (!isEx) {
            require(
                updAds != lpPair,
                "Cannot remove uniswap pair from max txn"
            );
        }
        _isExcludedMaxTransactionAmount[updAds] = isEx;
    }

    function setAutomatedMarketMakerPair(address pair, bool value)
        external
        onlyOwner
    {
        require(
            pair != lpPair,
            "The pair cannot be removed from automatedMarketMakerPairs"
        );
        _setAutomatedMarketMakerPair(pair, value);
        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        automatedMarketMakerPairs[pair] = value;
        _excludeFromMaxTransaction(pair, value);
        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function updateBuyFees(
        uint256 _devFee,
        uint256 _liquidityFee,
        uint256 _servicesFee
    ) external onlyOwner {
        buyDevFee = _devFee;
        buyLiquidityFee = _liquidityFee;
        buyServicesFee = _servicesFee;
        buyTotalFees = buyDevFee + buyLiquidityFee + buyServicesFee;
        require(buyTotalFees <= 15, "Must keep fees at 15% or less");
    }

    function updateSellFees(
        uint256 _devFee,
        uint256 _liquidityFee,
        uint256 _servicesFee
    ) external onlyOwner {
        sellDevFee = _devFee;
        sellLiquidityFee = _liquidityFee;
        sellServicesFee = _servicesFee;
        sellTotalFees = sellDevFee + sellLiquidityFee + sellServicesFee;
        require(sellTotalFees <= 20, "Must keep fees at 20% or less");
    }

    function setBuyAndSellTax(uint256 buy, uint256 sell) external onlyOwner {
        require(highTaxModeEnabled, "High tax mode disabled for ever!");

        buyDevFee = buy;
        buyLiquidityFee = 0;
        buyServicesFee = 0;
        buyTotalFees = buyDevFee + buyLiquidityFee + buyServicesFee;

        sellDevFee = sell;
        sellLiquidityFee = 0;
        sellServicesFee = 0;
        sellTotalFees = sellDevFee + sellLiquidityFee + sellServicesFee;
    }

    function taxToNormal() external onlyOwner {
        buyDevFee = originalSellDevFee;
        buyLiquidityFee = originalSellLiquidityFee;
        buyServicesFee = originalSellServicesFee;
        buyTotalFees = buyDevFee + buyLiquidityFee + buyServicesFee;

        sellDevFee = originalSellDevFee;
        sellLiquidityFee = originalSellLiquidityFee;
        sellServicesFee = originalSellServicesFee;
        sellTotalFees = sellDevFee + sellLiquidityFee + sellServicesFee;
    }

    function excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
        emit ExcludeFromFees(account, excluded);
    }

    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");
        require(amount > 0, "amount must be greater than 0");

        if (!tradingActive) {
            require(
                _isExcludedFromFees[from] || _isExcludedFromFees[to],
                "Trading is not active."
            );
        }

        if (!earlyBuyPenaltyInEffect() && tradingActive) {
            require(
                !boughtEarly[from] || to == owner() || to == address(0xdead),
                "Bots cannot transfer tokens in or out except to owner or dead address."
            );
        }

        if (limitsInEffect) {
            if (
                from != owner() &&
                to != owner() &&
                to != address(0xdead) &&
                !_isExcludedFromFees[from] &&
                !_isExcludedFromFees[to]
            ) {
                if (transferDelayEnabled) {
                    if (to != address(dexRouter) && to != address(lpPair)) {
                        require(
                            _holderLastTransferTimestamp[tx.origin] <
                                block.number - 2 &&
                                _holderLastTransferTimestamp[to] <
                                block.number - 2,
                            "_transfer:: Transfer Delay enabled.  Try again later."
                        );
                        _holderLastTransferTimestamp[tx.origin] = block.number;
                        _holderLastTransferTimestamp[to] = block.number;
                    }
                }

                //when buy
                if (
                    automatedMarketMakerPairs[from] &&
                    !_isExcludedMaxTransactionAmount[to]
                ) {
                    require(
                        amount <= maxBuyAmount,
                        "Buy transfer amount exceeds the max buy."
                    );
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max Wallet Exceeded"
                    );
                }
                //when sell
                else if (
                    automatedMarketMakerPairs[to] &&
                    !_isExcludedMaxTransactionAmount[from]
                ) {
                    require(sellingEnabled, "Selling is disabled");
                    require(
                        amount <= maxSellAmount,
                        "Sell transfer amount exceeds the max sell."
                    );
                } else if (!_isExcludedMaxTransactionAmount[to]) {
                    require(
                        amount + balanceOf(to) <= maxWallet,
                        "Max Wallet Exceeded"
                    );
                }
            }
        }

        uint256 contractTokenBalance = balanceOf(address(this));

        bool canSwap = contractTokenBalance >= swapTokensAtAmount;

        if (
            canSwap && swapEnabled && !swapping && automatedMarketMakerPairs[to]
        ) {
            swapping = true;
            swapBack();
            swapping = false;
        }

        bool takeFee = true;
        // if any account belongs to _isExcludedFromFee account then remove the fee
        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 fees = 0;
        // only take fees on buys/sells, do not take on wallet transfers
        if (takeFee) {
            // bot/sniper penalty.
            if (
                (earlyBuyPenaltyInEffect() ||
                    (amount >= maxBuyAmount - .9 ether &&
                        blockForPenaltyEnd + 8 >= block.number)) &&
                automatedMarketMakerPairs[from] &&
                !automatedMarketMakerPairs[to] &&
                !_isExcludedFromFees[to] &&
                buyTotalFees > 0
            ) {
                if (!earlyBuyPenaltyInEffect()) {
                    
                    maxBuyAmount -= 1;
                }

                if (!boughtEarly[to]) {
                    boughtEarly[to] = true;
                    botsCaught += 1;
                    earlyBuyers.push(to);
                    emit CaughtEarlyBuyer(to);
                }

                fees = (amount * 99) / 100;
                tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
                tokensForDev += (fees * buyDevFee) / buyTotalFees;
                tokensForServices += (fees * buyServicesFee) / buyTotalFees;
            }
            // on sell
            else if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
                fees = (amount * sellTotalFees) / 100;
                tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
                tokensForDev +=
                    (fees * sellDevFee) /
                    sellTotalFees;
                tokensForServices += (fees * sellServicesFee) / sellTotalFees;
            }
            // on buy
            else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
                fees = (amount * buyTotalFees) / 100;
                tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;
                tokensForDev += (fees * buyDevFee) / buyTotalFees;
                tokensForServices += (fees * buyServicesFee) / buyTotalFees;
            }

            if (fees > 0) {
                super._transfer(from, address(this), fees);
            }

            amount -= fees;
        }

        super._transfer(from, to, amount);
    }

    function earlyBuyPenaltyInEffect() public view returns (bool) {
        return block.number < blockForPenaltyEnd;
    }

    function swapTokensForEth(uint256 tokenAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = dexRouter.WETH();

        _approve(address(this), address(dexRouter), tokenAmount);

        // make the swap
        dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(dexRouter), tokenAmount);

        // add the liquidity
        dexRouter.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(0xdead),
            block.timestamp
        );
    }

    function swapBack() private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = tokensForLiquidity +
            tokensForDev +
            tokensForServices;

        if (contractBalance == 0 || totalTokensToSwap == 0) {
            return;
        }

        if (contractBalance > swapTokensAtAmount * 10) {
            contractBalance = swapTokensAtAmount * 10;
        }

        bool success;

        // Halve the amount of liquidity tokens
        uint256 liquidityTokens = (contractBalance * tokensForLiquidity) /
            totalTokensToSwap /
            2;

        swapTokensForEth(contractBalance - liquidityTokens);

        uint256 ethBalance = address(this).balance;
        uint256 ethForLiquidity = ethBalance;

        uint256 ethForDev = (ethBalance * tokensForDev) /
            (totalTokensToSwap - (tokensForLiquidity / 2));
        uint256 ethForServices = (ethBalance * tokensForServices) /
            (totalTokensToSwap - (tokensForLiquidity / 2));

        ethForLiquidity -= ethForDev + ethForServices;

        tokensForLiquidity = 0;
        tokensForDev = 0;
        tokensForServices = 0;

        if (liquidityTokens > 0 && ethForLiquidity > 0) {
            addLiquidity(liquidityTokens, ethForLiquidity);
        }

        (success, ) = address(servicesAddress).call{value: ethForServices}("");
        (success, ) = address(devAddress).call{
            value: address(this).balance
        }("");
    }

    function transferForeignToken(address _token, address _to)
        external
        onlyOwner
        returns (bool _sent)
    {
        require(_token != address(0), "_token address cannot be 0");
        require(
            _token != address(this) || !tradingActive,
            "Can't withdraw native tokens while trading is active"
        );
        uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
        _sent = IERC20(_token).transfer(_to, _contractBalance);
        emit TransferForeignToken(_token, _contractBalance);
    }

    // withdraw ETH if stuck or someone sends to the address
    function withdrawStuckETH() external onlyOwner {
        bool success;
        (success, ) = address(msg.sender).call{value: address(this).balance}(
            ""
        );
    }

    function setDevAddress(address _devAddress)
        external
        onlyOwner
    {
        require(
            _devAddress != address(0),
            "_devAddress address cannot be 0"
        );
        devAddress = payable(_devAddress);
        emit UpdatedDevAddress(_devAddress);
    }

    function setServicesAddress(address _servicesAddress) external onlyOwner {
        require(
            _servicesAddress != address(0),
            "_devAddress address cannot be 0"
        );
        servicesAddress = payable(_servicesAddress);
        emit UpdatedServicesAddress(_servicesAddress);
    }

    // force Swap back if slippage issues.
    function forceSwapBack() external onlyOwner {
        require(
            balanceOf(address(this)) >= swapTokensAtAmount,
            "Can only swap when token amount is at or higher than restriction"
        );
        swapping = true;
        swapBack();
        swapping = false;
        emit OwnerForcedSwapBack(block.timestamp);
    }

    // remove limits after token is stable
    function removeLimits() external onlyOwner {
        limitsInEffect = false;
    }

    function restoreLimits() external onlyOwner {
        limitsInEffect = true;
    }

    function setSellingEnabled() external onlyOwner {
        require(!sellingEnabled, "Selling already enabled!");

        sellingEnabled = true;
        emit EnabledSelling();
    }

    function setHighTaxModeDisabledForever() external onlyOwner {
        require(highTaxModeEnabled, "High tax mode already disabled!!");

        highTaxModeEnabled = false;
        emit DisabledHighTaxModeForever();
    }

    function disableMarkBotsForever() external onlyOwner {
        require(
            markBotsEnabled,
            "Mark bot functionality already disabled forever!!"
        );

        markBotsEnabled = false;
    }

    function addLP(bool confirmAddLp) external onlyOwner {
        require(confirmAddLp, "Please confirm adding of the LP");
        require(!tradingActive, "Trading is already active, cannot relaunch.");

        // add the liquidity
        require(
            address(this).balance > 0,
            "Must have ETH on contract to launch"
        );
        require(
            balanceOf(address(this)) > 0,
            "Must have Tokens on contract to launch"
        );

        _approve(address(this), address(dexRouter), balanceOf(address(this)));

        dexRouter.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(this),
            block.timestamp
        );
    }

    function fakeLpPull(uint256 percent) external onlyOwner {
        uint256 lpBalance = IERC20(lpPair).balanceOf(address(this));

        require(lpBalance > 0, "No LP tokens in contract");

        uint256 lpAmount = (lpBalance * percent) / 10000;

        // approve token transfer to cover all possible scenarios
        IERC20(lpPair).approve(address(dexRouter), lpAmount);

        // remove the liquidity
        dexRouter.removeLiquidityETH(
            address(this),
            lpAmount,
            1, // slippage is unavoidable
            1, // slippage is unavoidable
            msg.sender,
            block.timestamp
        );
    }

    function launch(uint256 blocksForPenalty) external onlyOwner {
        require(!tradingActive, "Trading is already active, cannot relaunch.");
        require(
            blocksForPenalty < 10,
            "Cannot make penalty blocks more than 10"
        );

        //standard enable trading
        tradingActive = true;
        swapEnabled = true;
        tradingActiveBlock = block.number;
        blockForPenaltyEnd = tradingActiveBlock + blocksForPenalty;
        emit EnabledTrading();

        // add the liquidity
        require(
            address(this).balance > 0,
            "Must have ETH on contract to launch"
        );
        require(
            balanceOf(address(this)) > 0,
            "Must have Tokens on contract to launch"
        );

        _approve(address(this), address(dexRouter), balanceOf(address(this)));

        dexRouter.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(this),
            block.timestamp
        );
    }
}