// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address to, 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 from, address to, uint256 amount) external returns (bool);
}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

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 to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, 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) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }

    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");
        _beforeTokenTransfer(from, to, amount);
        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }
        emit Transfer(from, to, amount);
        _afterTokenTransfer(from, to, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
        _afterTokenTransfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            _totalSupply -= amount;
        }
        emit Transfer(account, address(0), amount);
        _afterTokenTransfer(account, address(0), 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);
    }

    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= amount, "ERC20: insufficient allowance");
        unchecked {
            _approve(owner, spender, currentAllowance - amount);
        }
    }

    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

abstract contract ERC20Burnable is Context, ERC20 {
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    function burnFrom(address account, uint256 amount) public virtual {
        _spendAllowance(account, _msgSender(), amount);
        _burn(account, amount);
    }
}

abstract contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        _transferOwnership(_msgSender());
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    function _transferOwnership(address newOwner) internal virtual {
        address previousOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(previousOwner, newOwner);
    }
}

contract MOMOV2 is ERC20, ERC20Burnable, Ownable {
    address public router;

    uint256 private constant TOTALSUPPLY = 1_000_000_000_000;
    uint256 public buyTaxRate;  // Tax rate for buys (in basis points)
    uint256 public sellTaxRate; // Tax rate for sells (in basis points)

    address[] private WhiteListUsers;
    address[] private BlackListUsers;

    mapping(address => bool) public isWhiteListed;
    mapping(address => bool) public isBlackListed;

    address public taxWallet;

    constructor(address _router) ERC20("MOMO V2", "MOMO V2") {
        buyTaxRate = 100;  // Initial tax rate for buys: 0.1%
        sellTaxRate = 500; // Initial tax rate for sells: 5%

        _mint(msg.sender, TOTALSUPPLY * 10**decimals());

        router = _router;
        taxWallet = 0x2812da9FD8d2BfD710d9Be2bC15EB771Bdc5F96c;
    }

    function addWhiteListUser(address[] memory _users) public onlyOwner {
        for (uint256 i = 0; i < _users.length; i++) {
            if (!isWhiteListed[_users[i]]) {
                isWhiteListed[_users[i]] = true;
                WhiteListUsers.push(_users[i]);
            }
        }
    }

    function addBlackListUser(address[] memory _users) public onlyOwner {
        for (uint256 i = 0; i < _users.length; i++) {
            if (!isBlackListed[_users[i]]) {
                isBlackListed[_users[i]] = true;
                BlackListUsers.push(_users[i]);
            }
        }
    }

    function getBlacklistUsers() public view returns (address[] memory) {
        return BlackListUsers;
    }

    function getWhitelistUsers() public view returns (address[] memory) {
        return WhiteListUsers;
    }

    receive() external payable {}

    function setBuyTaxRate(uint256 _taxRate) public onlyOwner {
        require(_taxRate <= 1000, "Tax rate should be less than or equal to 10%");
        buyTaxRate = _taxRate;
    }

    function setSellTaxRate(uint256 _taxRate) public onlyOwner {
        require(_taxRate <= 1000, "Tax rate should be less than or equal to 10%");
        sellTaxRate = _taxRate;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(from, to, amount);

        if (to == router) {
            require(isBlackListed[msg.sender], "User Blacklisted");
            if (isWhiteListed[msg.sender]) {
                // no tax
                address owner = _msgSender();
                _transfer(owner, to, amount);
            } else {
                // tax
                address owner = _msgSender();
                uint256 taxAmount = (amount * sellTaxRate) / 10000; // Calculate tax
                _transfer(owner, taxWallet, taxAmount); // For tax
                _transfer(owner, to, amount - taxAmount); // To wallet address
            }
        } else {
            super._transfer(from, to, amount);
        }

        _afterTokenTransfer(from, to, amount);
    }
}