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

#ifndef __PROPOSELEDGER__
#define __PROPOSELEDGER__

class LedgerProposal
    : public CountedObject <LedgerProposal>
{
public:
    static char const* getCountedObjectName () { return "LedgerProposal"; }

    static const uint32 seqLeave = 0xffffffff; // leaving the consensus process

    typedef boost::shared_ptr<LedgerProposal> pointer;
    typedef const pointer& ref;

    // proposal from peer
    LedgerProposal (uint256 const & prevLgr, uint32 proposeSeq, uint256 const & propose,
                    uint32 closeTime, const RippleAddress & naPeerPublic, uint256 const & suppress);

    // our first proposal
    LedgerProposal (const RippleAddress & pubKey, const RippleAddress & privKey,
                    uint256 const & prevLedger, uint256 const & position, uint32 closeTime);

    // an unsigned "dummy" proposal for nodes not validating
    LedgerProposal (uint256 const & prevLedger, uint256 const & position, uint32 closeTime);

    uint256 getSigningHash () const;
    bool checkSign (const std::string & signature, uint256 const & signingHash);
    bool checkSign (const std::string & signature)
    {
        return checkSign (signature, getSigningHash ());
    }
    bool checkSign ()
    {
        return checkSign (mSignature, getSigningHash ());
    }

    const uint160& getPeerID () const
    {
        return mPeerID;
    }
    uint256 const& getCurrentHash () const
    {
        return mCurrentHash;
    }
    uint256 const& getPrevLedger () const
    {
        return mPreviousLedger;
    }
    uint256 const& getHashRouter () const
    {
        return mSuppression;
    }
    uint32 getProposeSeq () const
    {
        return mProposeSeq;
    }
    uint32 getCloseTime () const
    {
        return mCloseTime;
    }
    const RippleAddress& peekPublic () const
    {
        return mPublicKey;
    }
    Blob getPubKey () const
    {
        return mPublicKey.getNodePublic ();
    }
    Blob sign ();

    void setPrevLedger (uint256 const & prevLedger)
    {
        mPreviousLedger = prevLedger;
    }
    void setSignature (const std::string & signature)
    {
        mSignature = signature;
    }
    bool hasSignature ()
    {
        return !mSignature.empty ();
    }
    bool isPrevLedger (uint256 const & pl)
    {
        return mPreviousLedger == pl;
    }
    bool isBowOut ()
    {
        return mProposeSeq == seqLeave;
    }

    const boost::posix_time::ptime getCreateTime ()
    {
        return mTime;
    }
    bool isStale (boost::posix_time::ptime cutoff)
    {
        return mTime <= cutoff;
    }

    bool changePosition (uint256 const & newPosition, uint32 newCloseTime);
    void bowOut ();
    Json::Value getJson () const;

private:
    uint256 mPreviousLedger, mCurrentHash, mSuppression;
    uint32 mCloseTime, mProposeSeq;

    uint160         mPeerID;
    RippleAddress   mPublicKey;
    RippleAddress   mPrivateKey;    // If ours

    std::string                 mSignature; // set only if needed
    boost::posix_time::ptime    mTime;
};

#endif

// vim:ts=4