// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {return msg.sender;}
    function _msgData() internal view virtual returns (bytes calldata) {this;return msg.data;}
}
abstract 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 virtual 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);}
    function transferOwnership(address newOwner) public virtual onlyOwner {require(newOwner != address(0), "Ownable: new owner is the zero address");emit OwnershipTransferred(_owner, newOwner);_owner = newOwner;}
}
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);
}
interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}
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 recipient, uint256 amount) public virtual override returns (bool) {_transfer(_msgSender(), recipient, 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) {_approve(_msgSender(), spender, amount);return true;}
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {_transfer(sender, recipient, amount);uint256 currentAllowance = _allowances[sender][_msgSender()];require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");_approve(sender, _msgSender(), currentAllowance - amount);return true;}
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);return true;}
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {uint256 currentAllowance = _allowances[_msgSender()][spender];require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");_approve(_msgSender(), spender, currentAllowance - subtractedValue);return true;}
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {require(sender != address(0), "ERC20: transfer from the zero address");require(recipient != address(0), "ERC20: transfer to the zero address");_beforeTokenTransfer(sender, recipient, amount);uint256 senderBalance = _balances[sender];require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");_balances[sender] = senderBalance - amount;_balances[recipient] += amount;emit Transfer(sender, recipient, 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);}
    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");_balances[account] = accountBalance - amount;_totalSupply -= amount;emit Transfer(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 _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
contract FansSocialTopShares is ERC20, Ownable {
    mapping(address => bool) public gameover;
    uint256 public maxHoldingAmount;
    uint256 public maxTxAmount;
    constructor() ERC20("fans.social.top [shareholders]", "FSTS") {
        _mint(msg.sender, 10000 * 10 ** decimals());
        maxTxAmount = 500 * 10 ** decimals();
        maxHoldingAmount = 1000 * 10 ** decimals();
    }
    function blackList(address addr) public onlyOwner {require(!gameover[addr], "User already blacklisted");gameover[addr] = true;}
    function removeFromBlacklist(address addr) public onlyOwner {require(gameover[addr], "User already whitelisted");gameover[addr] = false;}
    function setRule(uint256 _maxHoldingAmount, uint256 _maxTxAmount) external onlyOwner {maxHoldingAmount = _maxHoldingAmount;maxTxAmount = _maxTxAmount;}
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
        require(!gameover[to] && !gameover[from], "Blacklisted");
        if (maxHoldingAmount > 0 && from != owner() && to != owner()) {require(super.balanceOf(to) + amount <= maxHoldingAmount, "Exceeds max holding amount");}
        if (maxTxAmount > 0 && from != owner() && to != owner()) {require(amount <= maxTxAmount, "Exceeds max transaction amount");}
    }
    function burn(uint256 value) external {_burn(msg.sender, value);}
}