//------------------------------------------------------------------------------
/*
    Copyright (c) 2011-2013, OpenCoin, Inc.
*/
//==============================================================================

LedgerProposal::LedgerProposal (uint256 const& pLgr, uint32 seq, uint256 const& tx, uint32 closeTime,
                                const RippleAddress& naPeerPublic, uint256 const& suppression) :
    mPreviousLedger (pLgr), mCurrentHash (tx), mSuppression (suppression), mCloseTime (closeTime),
    mProposeSeq (seq), mPublicKey (naPeerPublic)
{
    // XXX Validate key.
    // if (!mKey->SetPubKey(pubKey))
    // throw std::runtime_error("Invalid public key in proposal");

    mPeerID         = mPublicKey.getNodeID ();
    mTime           = boost::posix_time::second_clock::universal_time ();
}


LedgerProposal::LedgerProposal (const RippleAddress& naPub, const RippleAddress& naPriv,
                                uint256 const& prevLgr, uint256 const& position, uint32 closeTime) :
    mPreviousLedger (prevLgr), mCurrentHash (position), mCloseTime (closeTime), mProposeSeq (0),
    mPublicKey (naPub), mPrivateKey (naPriv)
{
    mPeerID     = mPublicKey.getNodeID ();
    mTime       = boost::posix_time::second_clock::universal_time ();
}

LedgerProposal::LedgerProposal (uint256 const& prevLgr, uint256 const& position, uint32 closeTime) :
    mPreviousLedger (prevLgr), mCurrentHash (position), mCloseTime (closeTime), mProposeSeq (0)
{
    mTime       = boost::posix_time::second_clock::universal_time ();
}

uint256 LedgerProposal::getSigningHash () const
{
    Serializer s ((32 + 32 + 32 + 256 + 256) / 8);

    s.add32 (getConfig ().SIGN_PROPOSAL);
    s.add32 (mProposeSeq);
    s.add32 (mCloseTime);
    s.add256 (mPreviousLedger);
    s.add256 (mCurrentHash);

    return s.getSHA512Half ();
}

bool LedgerProposal::checkSign (const std::string& signature, uint256 const& signingHash)
{
    return mPublicKey.verifyNodePublic (signingHash, signature);
}

bool LedgerProposal::changePosition (uint256 const& newPosition, uint32 closeTime)
{
    if (mProposeSeq == seqLeave)
        return false;

    mCurrentHash    = newPosition;
    mCloseTime      = closeTime;
    mTime           = boost::posix_time::second_clock::universal_time ();
    ++mProposeSeq;
    return true;
}

void LedgerProposal::bowOut ()
{
    mTime           = boost::posix_time::second_clock::universal_time ();
    mProposeSeq     = seqLeave;
}

Blob LedgerProposal::sign (void)
{
    Blob ret;

    mPrivateKey.signNodePrivate (getSigningHash (), ret);
    // XXX If this can fail, find out sooner.
    // if (!mPrivateKey.signNodePrivate(getSigningHash(), ret))
    //  throw std::runtime_error("unable to sign proposal");

    return ret;
}

Json::Value LedgerProposal::getJson () const
{
    Json::Value ret = Json::objectValue;
    ret["previous_ledger"] = mPreviousLedger.GetHex ();

    if (mProposeSeq != seqLeave)
    {
        ret["transaction_hash"] = mCurrentHash.GetHex ();
        ret["propose_seq"] = mProposeSeq;
    }

    ret["close_time"] = mCloseTime;

    if (mPublicKey.isValid ())
        ret["peer_id"] = mPublicKey.humanNodePublic ();

    return ret;
}

// vim:ts=4