// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.3;
interface IERC20 {
  function name() external view returns (string memory);
  function symbol() external view returns (string memory);
  function decimals() external view returns (uint8);
  function totalSupply() external view returns (uint256);
  function getOwner() external view returns (address);
  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 mod(uint256 a, uint256 b) internal pure returns (uint256) {
    return mod(a, b, 'SafeMath: modulo by zero');
  }
  function mod(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    require(b != 0, errorMessage);
    return a % b;
  }
}
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 returns (address) {
    return _owner;
  }
  modifier onlyOwner() {
    require(_owner == _msgSender(), 'Ownable: caller is not the owner');
    _;
  }
  function renounceOwnership() public onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
  }
  function transferOwnership(address newOwner) public onlyOwner {
    _transferOwnership(newOwner);
  }
  function _transferOwnership(address newOwner) internal {
    require(newOwner != address(0), 'Ownable: new owner is the zero address');
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
 
  }
}
contract ChadBasedXP is Context, IERC20, Ownable {

  using SafeMath for uint256;
  mapping(address => uint256) private _balances;
  mapping(address => mapping(address => uint256)) private _allowances;
  mapping(address => bool) private _whitelist;

  uint256 private _totalSupply;
  uint8 public _decimals;
  string public _symbol;
  string public _name;
  constructor() {
    _name = 'CHADS-XP';
    _symbol = 'CHADS-XP';
    _decimals = 18;
    _totalSupply = 1 * 10**11 * 10**18; 
    _balances[msg.sender] = _totalSupply;
    emit Transfer(address(0), msg.sender, _totalSupply);
  }

    modifier onlyWhitelisted(address sender) {
        require(_whitelist[_msgSender()], "this is non transferable token");
        _;
    }

    function setWhitelisted(address account, bool status) public onlyOwner {
        _whitelist[account] = status;
    }
 
  function getOwner() external view virtual override returns (address) {
    return owner();
  }
 
  function decimals() external view virtual override returns (uint8) {
    return _decimals;
  }
  function symbol() external view virtual override returns (string memory) {
    return _symbol;
  }
 
  function name() external view virtual override returns (string memory) {
    return _name;
  }
 
  function totalSupply() external view virtual override returns (uint256) {
    return _totalSupply;
  }
 
  function balanceOf(address account)
    external
    view
    virtual
    override
    returns (uint256)
  {
    return _balances[account];
  }
 
function transfer(address recipient, uint256 amount) external override returns (bool) {
    require(_whitelist[_msgSender()], "This is a non-transferable token"); 
    _transfer(_msgSender(), recipient, amount);
    return true;
}

  function allowance(address owner, address spender)
    external
    view
    override
    returns (uint256)
  {
    return _allowances[owner][spender];
  }
 
  function approve(address spender, uint256 amount)
    external
    override
    returns (bool)
  {
    _approve(_msgSender(), spender, amount);
    return true;
  }
 
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) external override 
    returns (bool) {
    require(_whitelist[_msgSender()], "This is a non-transferable token");
    _transfer(sender, recipient, amount);
    _approve(
      sender,
      _msgSender(),
      _allowances[sender][_msgSender()].sub(
        amount,
        'ERC20: transfer amount exceeds allowance'
      )
    );
    return true;
  }
  function increaseAllowance(address spender, uint256 addedValue)
    public
    returns (bool)
  {
    _approve(
      _msgSender(),
      spender,
      _allowances[_msgSender()][spender].add(addedValue)
    );
    return true;
  }
  function decreaseAllowance(address spender, uint256 subtractedValue)
    public
    returns (bool)
  {
    _approve(
      _msgSender(),
      spender,
      _allowances[_msgSender()][spender].sub(
        subtractedValue,
        'ERC20: decreased allowance below zero'
      )
    );
    return true;
  }
  function burn(uint256 amount) public virtual {
    _burn(_msgSender(), amount);
  }
  function burnFrom(address account, uint256 amount) public virtual {
    uint256 decreasedAllowance =
      _allowances[account][_msgSender()].sub(
        amount,
        'ERC20: burn amount exceeds allowance'
      );
    _approve(account, _msgSender(), decreasedAllowance);
    _burn(account, amount);
  }
  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');
    _balances[sender] = _balances[sender].sub(
      amount,
      'ERC20: transfer amount exceeds balance'
    );
    _balances[recipient] = _balances[recipient].add(amount);
    emit Transfer(sender, recipient, amount);
  }
  function _burn(address account, uint256 amount) internal {
    require(account != address(0), 'ERC20: burn from the zero address');
    _balances[account] = _balances[account].sub(
      amount,
      'ERC20: burn amount exceeds balance'
    );
    _totalSupply = _totalSupply.sub(amount);
    emit Transfer(account, address(0), 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": {
    "ChadBasedXP.sol": "ChadBasedXP"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}