contract RefundVault is Ownable {
    using SafeMath for uint256;

    enum State {Active, Refunding, Closed}

    mapping(address => uint256) public deposited;
    address public wallet;
    State public state;

    event Closed();
    event RefundsEnabled();
    event Refunded(address indexed beneficiary, uint256 weiAmount);

    /**
     * @param _wallet Vault address
     */
    function RefundVault(address _wallet) public {
        require(_wallet != address(0));
        wallet = _wallet;
        state = State.Active;
    }

    /**
     * @param investor Investor address
     */
    function deposit(address investor) onlyOwner public payable {
        require(state == State.Active);
        deposited[investor] = deposited[investor].add(msg.value);
    }

    function close() onlyOwner public {
        require(state == State.Active);
        state = State.Closed;
        Closed();
        wallet.transfer(this.balance);
    }

    function enableRefunds() onlyOwner public {
        require(state == State.Active);
        state = State.Refunding;
        RefundsEnabled();
    }

    /**
     * @param investor Investor address
     */
    function refund(address investor) public {
        require(state == State.Refunding);
        uint256 depositedValue = deposited[investor];
        deposited[investor] = 0;
        investor.transfer(depositedValue);
        Refunded(investor, depositedValue);
    }
}
/**
 * @title RefundVault
 * @dev This contract is used for storing funds while a crowdsale
 * is in progress. Supports refunding the money if crowdsale fails,
 * and forwarding it if crowdsale is successful.
 */
function refund(address investor) public {
    require(state == State.Refunding);
    uint256 depositedValue = deposited[investor];
    deposited[investor] = 0;
    investor.transfer(depositedValue);
    Refunded(investor, depositedValue);
}

/**
 * @param investor Investor address
 */