Love.sol

// SPDX-License-Identifier: MIT

pragma solidity 0.8.13;

import "./IERC20.sol";
import "./Pausable.sol";

contract Love is IERC20, Pausable {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name="Love";
    string private _symbol="LV";
    uint8 private _decimals = 18;

     constructor() {
       _owner=_msgSender();
    }

    function name() public view  override returns (string memory) {
        return _name;
    }

    function symbol() public view  override returns (string memory) {
        return _symbol;
    }

    
    function decimals() public view  override returns (uint8) {
        return _decimals;
    }

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

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

 
    function transfer(address to, uint256 amount) public  whenNotPaused override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, 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) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

   
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public whenNotPaused override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

   
    function decreaseAllowance(address spender, uint256 subtractedValue) public 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 whenNotPaused {
        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 whenNotPaused onlyOwner{
        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 mint(uint256 amount) public whenNotPaused onlyOwner  {
        _mint(_msgSender(), amount);
    }

  
    function _burn(address account, uint256 amount) internal whenNotPaused onlyOwner{
        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 burn(uint256 amount) public whenNotPaused onlyOwner  {
        _burn(_msgSender(), 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);
    }

 
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

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

    
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal {}
}