/*
Copyright (C) 2010 Srivats P.

This file is part of "Ostinato"

This is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

#ifndef _STREAM_BASE_H
#define _STREAM_BASE_H

#include <QString>
#include <QLinkedList>
#include <QVariant>

#include "protocol.pb.h"

const int kFcsSize = 4;

class AbstractProtocol;
struct FrameValueAttrib;
class ProtocolList;
class ProtocolListIterator;

class StreamBase
{
public:
    StreamBase(int portId = -1);
    ~StreamBase();

    void protoDataCopyFrom(const OstProto::Stream &stream);
    void protoDataCopyInto(OstProto::Stream &stream) const;

    bool hasProtocol(quint32 protocolNumber) const;
    ProtocolListIterator* createProtocolListIterator() const;

    //! \todo (LOW) should we have a copy constructor??

public:
    enum FrameLengthMode {
        e_fl_fixed,
        e_fl_inc,
        e_fl_dec,
        e_fl_random,
        e_fl_imix
    };

    enum SendUnit {
        e_su_packets,
        e_su_bursts
    };

    enum SendMode {
        e_sm_fixed,
        e_sm_continuous
    };

    enum NextWhat {
        e_nw_stop,
        e_nw_goto_next,
        e_nw_goto_id
    };

    quint32    id() const;
    bool setId(quint32 id);

    quint32 portId() { return portId_;}
#if 0 // FIXME(HI): needed?
    bool setPortId(quint32 id)
        { mCore->set_port_id(id); return true;}
#endif

    quint32    ordinal();
    bool setOrdinal(quint32    ordinal);

    bool isEnabled() const;
    bool setEnabled(bool flag);

    const QString name() const ;
    bool setName(QString name) ;

    // Frame Length (includes FCS);
    FrameLengthMode    lenMode() const;
    bool setLenMode(FrameLengthMode    lenMode);

    quint16    frameLen(int streamIndex = 0) const;
    bool setFrameLen(quint16 frameLen);

    quint16    frameLenMin() const;
    bool setFrameLenMin(quint16 frameLenMin);

    quint16    frameLenMax() const;
    bool setFrameLenMax(quint16 frameLenMax);

    quint16 frameLenAvg() const;

    SendUnit sendUnit() const;
    bool setSendUnit(SendUnit sendUnit);

    SendMode sendMode() const;
    bool setSendMode(SendMode sendMode);

    NextWhat nextWhat() const;
    bool setNextWhat(NextWhat nextWhat);

    quint32 numPackets() const;
    bool setNumPackets(quint32 numPackets);

    quint32 numBursts() const;
    bool setNumBursts(quint32 numBursts);

    quint32 burstSize() const;
    bool setBurstSize(quint32 packetsPerBurst);

    double packetRate() const;
    bool setPacketRate(double packetsPerSec);

    double burstRate() const;
    bool setBurstRate(double burstsPerSec);

    double averagePacketRate() const;
    bool setAveragePacketRate(double packetsPerSec);

    bool isFrameVariable() const;
    bool isFrameSizeVariable() const;
    int frameSizeVariableCount() const;
    int frameVariableCount() const;
    int frameProtocolLength(int frameIndex) const;
    int frameCount() const;
    int frameValue(uchar *buf, int bufMaxSize, int frameIndex,
                   FrameValueAttrib *attrib = nullptr) const;

    int protocolFieldReplace(quint32 protocolNumber,
                             int fieldIndex, int fieldBitSize,
                             QVariant findValue, QVariant findMask,
                             QVariant replaceValue, QVariant replaceMask);

    quint64 deviceMacAddress(int frameIndex) const;
    quint64 neighborMacAddress(int frameIndex) const;

    bool preflightCheck(QStringList &result) const;

    static bool StreamLessThan(StreamBase* stream1, StreamBase* stream2);

private:
    template <typename T>
    int findReplace(quint32 protocolNumber, int fieldIndex,
                     QVariant findValue, QVariant findMask,
                     QVariant replaceValue, QVariant replaceMask);
    int portId_;

    OstProto::StreamId      *mStreamId;
    OstProto::StreamCore    *mCore;
    OstProto::StreamControl *mControl;

    ProtocolList *currentFrameProtocols;
};

#endif