/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2008 INESC Porto

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * C++ helper functions for use by the python visualizer (for things

 * Python is too slow at).

 *

 * Author: Gustavo Carneiro  <gjc@inescporto.pt>

 */

#ifndef NS3_PYVIZ_H

#define NS3_PYVIZ_H

#include "ns3/nstime.h"

#include "ns3/event-id.h"

#include "ns3/node.h"

#include "ns3/channel.h"

#include "ns3/packet.h"

#include "ns3/mac48-address.h"

#include "ns3/ipv4-header.h"

#include "ns3/ipv4-l3-protocol.h"

#include <map>

#include <set>

namespace ns3 {

/**

 * \brief helper class to be used by the visualizer

 * \internal

 *

 * This class is not meant to be used by simulations.  It is only

 * meant to be used by the visualizer tool (PyViz).  The only reason

 * it is public is because Python bindings for it are needed,

 * otherwise it should be considered private.

 **/

class PyViz

{

public:

  PyViz ();

  ~PyViz ();

  void RegisterDropTracePath (std::string const &tracePath);

  void RegisterCsmaLikeDevice (std::string const &deviceTypeName);

  void RegisterWifiLikeDevice (std::string const &deviceTypeName);

  void RegisterPointToPointLikeDevice (std::string const &deviceTypeName);

  // Run simulation until a given (simulated, absolute) time is reached

  void SimulatorRunUntil (Time time);

  static void Pause (std::string const &message);  

  std::vector<std::string> GetPauseMessages () const;

  struct TransmissionSample

  {

    Ptr<Node> transmitter;

    Ptr<Node> receiver; // NULL if broadcast

    Ptr<Channel> channel;

    uint32_t bytes;

  };

  typedef std::vector<TransmissionSample> TransmissionSampleList;

  TransmissionSampleList GetTransmissionSamples () const;

  struct PacketDropSample

  {

    Ptr<Node> transmitter;

    uint32_t bytes;

  };

  typedef std::vector<PacketDropSample> PacketDropSampleList;

  PacketDropSampleList GetPacketDropSamples () const;

  struct PacketSample

  {

    Time time;

    Ptr<Packet> packet;

    Ptr<NetDevice> device;

  };

  struct TxPacketSample : PacketSample

  {

    Mac48Address to;

  };

  struct RxPacketSample : PacketSample

  {

    Mac48Address from;

  };

  struct LastPacketsSample

  {

    std::vector<RxPacketSample> lastReceivedPackets;

    std::vector<TxPacketSample> lastTransmittedPackets;

    std::vector<PacketSample> lastDroppedPackets;

  };

  LastPacketsSample GetLastPackets (uint32_t nodeId) const;

  void SetNodesOfInterest (std::set<uint32_t> nodes);

  struct NetDeviceStatistics

  {

    NetDeviceStatistics () : transmittedBytes (0), receivedBytes (0),

                             transmittedPackets (0), receivedPackets (0) {}

    uint64_t transmittedBytes;

    uint64_t receivedBytes;

    uint32_t transmittedPackets;

    uint32_t receivedPackets;

  };

  struct NodeStatistics

  {

    uint32_t nodeId;

    std::vector<NetDeviceStatistics> statistics;

  };

  std::vector<NodeStatistics> GetNodesStatistics () const;

  enum PacketCaptureMode {

    PACKET_CAPTURE_DISABLED=1, // packet capture is disabled

    PACKET_CAPTURE_FILTER_HEADERS_OR, // packet capture if any of the indicated headers is present

    PACKET_CAPTURE_FILTER_HEADERS_AND, // packet capture if all of the indicated headers are present

  };

  struct PacketCaptureOptions

  {

    std::set<TypeId> headers;

    uint32_t numLastPackets;

    PacketCaptureMode mode;

  };

  void SetPacketCaptureOptions (uint32_t nodeId, PacketCaptureOptions options);

  // Yes, I know, this is just a utility function, not really related to the class in any way.

  // -#- @lineX1(direction=inout); @lineY1(direction=inout); @lineX2(direction=inout); @lineY2(direction=inout) -#-

  static void LineClipping (double boundsX1, double boundsY1, double boundsX2, double boundsY2, double &lineX1, double &lineY1, double &lineX2, double &lineY2); // don't break this line or pybindgen will not be able to pick up the above annotation :(

private:

  bool GetPacketCaptureOptions (uint32_t nodeId, const PacketCaptureOptions **outOptions) const;

  static bool FilterPacket (Ptr<const Packet> packet, const PacketCaptureOptions &options);

  typedef std::pair<Ptr<Channel>, uint32_t> TxRecordKey;

  struct TxRecordValue

  {

    Time time;

    Ptr<Node> srcNode;

    bool isBroadcast;

  };

  struct TransmissionSampleKey

  {

    bool operator < (TransmissionSampleKey const &other) const;

    bool operator == (TransmissionSampleKey const &other) const;

    Ptr<Node> transmitter;

    Ptr<Node> receiver; // NULL if broadcast

    Ptr<Channel> channel;

  };

  struct TransmissionSampleValue

  {

    uint32_t bytes;

  };

  // data

  std::map<uint32_t, PacketCaptureOptions> m_packetCaptureOptions;

  std::vector<std::string> m_pauseMessages;

  std::map<TxRecordKey, TxRecordValue> m_txRecords;

  std::map<TransmissionSampleKey, TransmissionSampleValue> m_transmissionSamples;

  std::map<Ptr<Node>, uint32_t> m_packetDrops;

  std::set<uint32_t> m_nodesOfInterest; // list of node IDs whose transmissions will be monitored

  std::map<uint32_t, Time> m_packetsOfInterest; // list of packet UIDs that will be monitored

  std::map<uint32_t, LastPacketsSample> m_lastPackets;

  std::map<uint32_t, std::vector<NetDeviceStatistics> > m_nodesStatistics;

  // Trace callbacks

  void TraceNetDevTxCommon (std::string const &context, Ptr<const Packet> packet, Mac48Address const &destination);

  void TraceNetDevRxCommon (std::string const &context, Ptr<const Packet> packet, Mac48Address const &source);

  void TraceNetDevTxWifi (std::string context, Ptr<const Packet> packet);

  void TraceNetDevRxWifi (std::string context, Ptr<const Packet> packet);

  void TraceDevQueueDrop (std::string context, Ptr<const Packet> packet);

  void TraceIpv4Drop (std::string context, ns3::Ipv4Header const &hdr, Ptr<const Packet> packet,

                      ns3::Ipv4L3Protocol::DropReason reason, Ptr<Ipv4> dummy_ipv4, uint32_t interface);

  void TraceNetDevTxCsma (std::string context, Ptr<const Packet> packet);

  void TraceNetDevRxCsma (std::string context, Ptr<const Packet> packet);

  void TraceNetDevPromiscRxCsma (std::string context, Ptr<const Packet> packet);

  void TraceNetDevTxPointToPoint (std::string context, Ptr<const Packet> packet);

  void TraceNetDevRxPointToPoint (std::string context, Ptr<const Packet> packet);

  void TraceNetDevTxWimax (std::string context, Ptr<const Packet> packet, Mac48Address const &destination);

  void TraceNetDevRxWimax (std::string context, Ptr<const Packet> packet, Mac48Address const &source);

  inline NetDeviceStatistics & FindNetDeviceStatistics (int node, int interface);

  void DoPause (std::string const &message);

  bool m_stop;

  EventId m_stopCallbackEvent;

  void CallbackStopSimulation ();

};

}

#endif /* NS3_PYVIZ_H */