// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

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);
}

contract Ownable {
    address private _owner;

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

    constructor() {
        _owner = msg.sender;
        emit OwnershipTransferred(address(0), _owner);
    }

    modifier onlyOwner() {
        require(msg.sender == _owner, "Ownable: caller is not the owner");
        _;
    }

    function owner() public view returns (address) {
        return _owner;
    }

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

contract WULFY is IERC20, Ownable {
    string public name;
    string public symbol;
    uint8 public decimals;
    uint256 private _totalSupply;

    uint256 public buyTax = 2; // 2% buy tax
    uint256 public sellTax = 2; // 2% sell tax
    uint256 public constant Honourable_Guys = 1 * (10**18); 

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

    event BuyTaxUpdated(uint256 newBuyTax);
    event SellTaxUpdated(uint256 newSellTax);
    event TaxExemptionUpdated(address account, bool isExempt);

    constructor() {
        name = unicode"Based WULFY";
        symbol = unicode"WULFY";
        decimals = 18;
        _mint(msg.sender, 1_000_000_000 * (10**uint256(decimals))); // Mint initial supply
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

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

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

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

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

        return true;
    }

    function setBuyTax(uint256 _buyTax) external onlyOwner {
        buyTax = _buyTax;
        emit BuyTaxUpdated(_buyTax);
    }

    function setSellTax(uint256 _sellTax) external onlyOwner {
        sellTax = _sellTax;
        emit SellTaxUpdated(_sellTax);
    }

    function setTaxExempt(address[] calldata accounts, bool exempt) external onlyOwner {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isTaxExempt[accounts[i]] = exempt;
            emit TaxExemptionUpdated(accounts[i], exempt);
        }
    }

    function isTaxExempt(address account) external view returns (bool) {
        return _isTaxExempt[account];
    }

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal {
        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");

        uint256 taxAmount = 0;
        if (!_isTaxExempt[sender] && !_isTaxExempt[recipient] && amount >= Honourable_Guys) {
            if (recipient == owner()) {
                taxAmount = (amount * sellTax) / 100; // Sell tax
            } else if (sender == owner()) {
                taxAmount = (amount * buyTax) / 100; // Buy tax
            }
        }

        uint256 netAmount = amount - taxAmount;

        _balances[sender] -= amount;
        _balances[recipient] += netAmount;

        if (taxAmount > 0) {
            _balances[owner()] += taxAmount;
            emit Transfer(sender, owner(), taxAmount);
        }

        emit Transfer(sender, recipient, netAmount);
    }

    function _mint(address account, uint256 amount) internal {
        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 {
        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);
    }
}

{
  "compilationTarget": {
    "WULFY.sol": "WULFY"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}