//File: contracts/Owned.sol
pragma solidity ^0.4.11;


/// @dev `Owned` is a base level contract that assigns an `owner` that can be
///  later changed
contract Owned {

    /// @dev `owner` is the only address that can call a function with this
    /// modifier
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    address public owner;

    /// @notice The Constructor assigns the message sender to be `owner`
    function Owned() {
        owner = msg.sender;
    }

    address public newOwner;

    /// @notice `owner` can step down and assign some other address to this role
    /// @param _newOwner The address of the new owner. 0x0 can be used to create
    ///  an unowned neutral vault, however that cannot be undone
    function changeOwner(address _newOwner) onlyOwner {
        newOwner = _newOwner;
    }


    function acceptOwnership() {
        if (msg.sender == newOwner) {
            owner = newOwner;
        }
    }
}

//File: ./contracts/Vault.sol
pragma solidity ^0.4.11;



contract LiquidPledging {
    function confirmPayment(uint64 idNote, uint amount);
    function cancelPayment(uint64 idNote, uint amount);
}

contract Vault is Owned {

    LiquidPledging public liquidPledging;
    bool public autoPay;

    enum PaymentState {
        Pending,
        Paid,
        Canceled
    }

    struct Payment {
        PaymentState state;
        bytes32 ref;
        address dest;
        uint amount;
    }

    Payment[] public payments;

    modifier onlyLiquidPledging() {
        require(msg.sender == address(liquidPledging));
        _;
    }

    function VaultMock() {

    }

    function () payable {

    }

    function setLiquidPledging(address _newLiquidPledging) onlyOwner {
        liquidPledging = LiquidPledging(_newLiquidPledging);
    }

    function setAutopay(bool _automatic) onlyOwner {
        autoPay = _automatic;
    }


    function authorizePayment(bytes32 _ref, address _dest, uint _amount) onlyLiquidPledging returns (uint) {
        uint idPayment = payments.length;
        payments.length ++;
        payments[idPayment].state = PaymentState.Pending;
        payments[idPayment].ref = _ref;
        payments[idPayment].dest = _dest;
        payments[idPayment].amount = _amount;

        AuthorizePayment(idPayment, _ref, _dest,  _amount);

        if (autoPay) doConfirmPayment(idPayment);

        return idPayment;
    }

    function confirmPayment(uint _idPayment) onlyOwner {
        doConfirmPayment(_idPayment);
    }

    function doConfirmPayment(uint _idPayment) internal {
        require(_idPayment < payments.length);
        Payment storage p = payments[_idPayment];
        require(p.state == PaymentState.Pending);

        p.state = PaymentState.Paid;
        p.dest.transfer(p.amount);

        liquidPledging.confirmPayment(uint64(p.ref), p.amount);

        ConfirmPayment(_idPayment);
    }

    function cancelPayment(uint _idPayment) onlyOwner {
        doCancelPayment(_idPayment);
    }

    function doCancelPayment(uint _idPayment) internal {
        require(_idPayment < payments.length);
        Payment storage p = payments[_idPayment];
        require(p.state == PaymentState.Pending);

        p.state = PaymentState.Canceled;

        liquidPledging.cancelPayment(uint64(p.ref), p.amount);

        CancelPayment(_idPayment);

    }

    function multiConfirm(uint[] _idPayments) onlyOwner {
        for (uint i=0; i < _idPayments.length; i++) {
            doConfirmPayment(_idPayments[i]);
        }
    }

    function multiCancel(uint[] _idPayments) onlyOwner {
        for (uint i=0; i < _idPayments.length; i++) {
            doCancelPayment(_idPayments[i]);
        }
    }

    function nPayments() constant returns (uint) {
        return payments.length;
    }

    event ConfirmPayment(uint indexed idPayment);
    event CancelPayment(uint indexed idPayment);
    event AuthorizePayment(uint indexed idPayment, bytes32 indexed ref, address indexed dest, uint amount);

}