contract ShabuOpenSale {
  using SafeMath for uint256;

  uint256 public totalSold;
  address payable public owner;
  uint256 public collectedETH;
  uint256 public startDate;
  bool public status = false;
  mapping (address => uint256) private _contributions;
  uint256 LIMIT_BUY = 5 ether;
  ERC20 public Token = ERC20(0xDA8DD97b9C0a4f4691e8C88Fe47c740b70D5A449);
  constructor() public {
    owner = msg.sender;
  }

 
  // Converts ETH to Tokens and sends new Tokens to the sender
  receive () external payable {
    deposit();
  }
  function deposit() public payable {
       // Validation
    require(Token.balanceOf(address(this)) > 0);
    require(msg.value >= 0.1 ether);
    require(status);
    uint256 amount = msg.value.mul(5);
    require(amount <= Token.balanceOf(address(this)));
    require(_contributions[msg.sender].add(msg.value) <= LIMIT_BUY);
    
    // transfer the tokens.
    Token.transfer(msg.sender, amount);
    // Transfer ETH to Owner
    owner.transfer(msg.value);
    // update constants.
    _contributions[msg.sender] = _contributions[msg.sender].add(msg.value);
    totalSold = totalSold.add(amount);
    collectedETH = collectedETH.add(msg.value);
  }
  function contributionCheck(address _address) public view returns(uint256) {
      return _contributions[_address];
  }
  // Function to query the supply of Tokens in the contract
  function availableTokens() public view returns(uint256) {
    return Token.balanceOf(address(this));
  }

  // OWNER FEATURE
  function statusPresale(bool _status) public {
    require(msg.sender == owner);
    status = _status;
  }
  function reclaim() public {
    require(msg.sender == owner && Token.balanceOf(address(this)) > 0);
    // burn the left over.
    Token.transfer(owner, Token.balanceOf(address(this)));
  }
 
  
  
}
// Converts ETH to Tokens and sends new Tokens to the sender