/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2011 University of California, Los Angeles
 *
 * 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
 *
 * Author: Ilya Moiseenko <iliamo@cs.ucla.edu>
 */


#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/NDNabstraction-module.h"
#include "ns3/point-to-point-grid.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/animation-interface.h"
// #include "ns3/ccnx-l3-protocol.h"

#include <iostream>
#include <sstream>
#include "ns3/annotated-topology-reader.h"
#include "../utils/spring-mobility-helper.h"

#include "ns3/config-store.h"

using namespace ns3;
using namespace std;

NS_LOG_COMPONENT_DEFINE ("CcnxSyntheticTopology");

// int transmittedInterests = 0;
// int receivedInterests = 0;
// int droppedInterests = 0;

// int transmittedData = 0;
// int receivedData = 0;
// int droppedData = 0;

void PrintTime ()
{
    NS_LOG_INFO (Simulator::Now ());
    
    Simulator::Schedule (Seconds (10.0), PrintTime);
}

void PrintFIBs ()
{
    NS_LOG_INFO ("Outputing FIBs into [fibs.log]");
    Ptr<OutputStreamWrapper> routingStream = Create<OutputStreamWrapper> ("fibs.log", std::ios::out);
    for (NodeList::Iterator node = NodeList::Begin ();
         node != NodeList::End ();
         node++)
    {
        // *routingStream->GetStream () << "Node " << (*node)->GetId () << "\n";
        
        Ptr<CcnxFib> fib = (*node)->GetObject<CcnxFib> ();
        NS_ASSERT_MSG (fib != 0, "Fire alarm");
        *routingStream->GetStream () << *fib << "\n\n";
    }
}


struct AggregateTrace
{
    AggregateTrace ()
    : m_transmittedInterests (0)
    , m_transmittedData (0)
    , m_receivedInterests (0)
    , m_receivedNacks (0)
    , m_receivedData (0)
    {
    }
    
    void
    TransmittedInterests (std::string context,
                          Ptr<const CcnxInterestHeader>, Ptr<CcnxApp>, Ptr<CcnxFace>)
    {
        m_transmittedInterests++;
    }
    
    void
    TransmittedData (std::string context,
                     Ptr<const CcnxContentObjectHeader>, Ptr<const Packet>,
                     Ptr<CcnxApp>, Ptr<CcnxFace>)
    {
        m_transmittedData++;
    }
    
    void
    ReceivedInterests (std::string context,
                       Ptr<const CcnxInterestHeader>,
                       Ptr<CcnxApp>, Ptr<CcnxFace>)
    {
        m_receivedInterests++;
    }
    
    void
    ReceivedNacks (std::string context,
                   Ptr<const CcnxInterestHeader>,
                   Ptr<CcnxApp>, Ptr<CcnxFace>)
    {
        m_receivedNacks++;
    }
    
    void
    ReceivedData (std::string context,
                  Ptr<const CcnxContentObjectHeader>, Ptr<const Packet>,
                  Ptr<CcnxApp>, Ptr<CcnxFace>)
    {
        m_receivedData++;
    }
    
    uint64_t m_transmittedInterests;
    uint64_t m_transmittedData;
    uint64_t m_receivedInterests;
    uint64_t m_receivedNacks;
    uint64_t m_receivedData;
};

ostream&
operator << (ostream &os, const AggregateTrace &trace)
{
    os << ">> (i): " << trace.m_transmittedInterests << "\n";
    os << ">> (d): " << trace.m_transmittedData << "\n";
    os << "<< (i): " << trace.m_receivedInterests << "\n";
    os << "<< (d): " << trace.m_receivedData << "\n";
    os << "<< (n): " << trace.m_receivedNacks << "\n";
    return os;
}

// static void OnTransmittedInterest (std::string context, Ptr<const CcnxInterestHeader> header, 
//                                    Ptr<Ccnx> ccnx, Ptr<const CcnxFace> face)
// {
//   transmittedInterests++;
// }

// static void OnReceivedInterest (std::string context, Ptr<const CcnxInterestHeader> header, 
//                                 Ptr<Ccnx> ccnx, Ptr<const CcnxFace> face)
// {
//   receivedInterests++;
// }

// static void OnDroppedInterest (std::string context, Ptr<const CcnxInterestHeader> header, CcnxL3Protocol::DropReason reason,
//                                Ptr<Ccnx> ccnx, Ptr<const CcnxFace> face)
// {
//   droppedInterests++;
// }

// static void OnTransmittedData (std::string context, Ptr<const CcnxContentObjectHeader> header, Ptr<const Packet> packet,
//                                CcnxL3Protocol::ContentObjectSource source, Ptr<Ccnx> ccnx, Ptr<const CcnxFace> face)
// {
//     transmittedData++;    
// }

// static void OnReceivedData (std::string context, Ptr<const CcnxContentObjectHeader> header, Ptr<const Packet> packet,
//                             Ptr<Ccnx> ccnx, Ptr<const CcnxFace> face)
// {
//     receivedData++;
// }

// static void OnDroppedData (std::string context, Ptr<const CcnxContentObjectHeader> header, Ptr<const Packet> packet,
//                            CcnxL3Protocol::DropReason reason, Ptr<Ccnx> ccnx, Ptr<const CcnxFace> face )
// {
//     droppedData++;
// }

int 
main (int argc, char *argv[])
{
    // Packet::EnableChecking();
    // Packet::EnablePrinting();
    string input ("./src/NDNabstraction/examples/synthetic-topology.txt");
    
    Time finishTime = Seconds (20.0);
    string animationFile;
    string strategy = "ns3::CcnxFloodingStrategy";
    CommandLine cmd;
    cmd.AddValue ("finish", "Finish time", finishTime);
    cmd.AddValue ("netanim", "NetAnim filename", animationFile);
    cmd.AddValue ("strategy", "CCNx forwarding strategy", strategy);
    cmd.Parse (argc, argv);
    
    ConfigStore config;
    config.ConfigureDefaults ();
    
    // ------------------------------------------------------------
    // -- Read topology data.
    // --------------------------------------------
    
    AnnotatedTopologyReader reader ("/synthetic");
    //reader.SetMobilityModel ("ns3::SpringMobilityModel");
    reader.SetFileName (input);
    
    NodeContainer nodes = reader.Read ();
    
    if (reader.LinksSize () == 0)
    {
        NS_LOG_ERROR ("Problems reading the topology file. Failing.");
        return -1;
    }
    
    //SpringMobilityHelper::InstallSprings (reader.LinksBegin (), reader.LinksEnd ());
    
    InternetStackHelper stack;
    Ipv4GlobalRoutingHelper ipv4RoutingHelper ("ns3::Ipv4GlobalRoutingOrderedNexthops");
    stack.SetRoutingHelper (ipv4RoutingHelper);
    stack.Install (nodes);
    /*
    reader.AssignIpv4Addresses (Ipv4Address ("10.0.0.0"));
    */
    NS_LOG_INFO("Nodes = " << nodes.GetN());
    NS_LOG_INFO("Links = " << reader.LinksSize ());
    
    // Install CCNx stack
    NS_LOG_INFO ("Installing CCNx stack");
    CcnxStackHelper ccnxHelper;
    ccnxHelper.SetForwardingStrategy (strategy);
    ccnxHelper.EnableLimits (false, Seconds(0.1));
    ccnxHelper.SetDefaultRoutes (true);
    ccnxHelper.InstallAll ();
    
    NS_LOG_INFO ("Installing Applications");
    CcnxConsumerHelper consumerHelper ("/5");
    ApplicationContainer consumers = consumerHelper.Install (Names::Find<Node> ("/synthetic", "NODE2"));
    
    consumers.Start (Seconds (0.0));
    consumers.Stop (finishTime);
    
    CcnxConsumerHelper consumerHelper2("/6");
    ApplicationContainer consumers2 = consumerHelper2.Install(Names::Find<Node> ("/synthetic", "NODE6"));
    
    consumers2.Start (Seconds (0.0));
    consumers2.Stop (finishTime);
    
    CcnxProducerHelper producerHelper ("/5",1024);
    ApplicationContainer producers = producerHelper.Install (Names::Find<Node> ("/synthetic", "NODE7"));
    
    producers.Start (Seconds (0.0));
    producers.Stop (finishTime);
    
    CcnxProducerHelper producerHelper2 ("/6",1024);
    ApplicationContainer producers2 = producerHelper2.Install (Names::Find<Node> ("/synthetic", "NODE1"));

    producers2.Start (Seconds (0.0));
    producers2.Stop (finishTime);

    // Populate FIB based on IPv4 global routing controller
    //ccnxHelper.InstallFakeGlobalRoutes ();
    //ccnxHelper.InstallRouteTo (Names::Find<Node> ("/synthetic", "NODE1"));
    //ccnxHelper.InstallRouteTo (Names::Find<Node> ("/synthetic", "NODE7"));
    
    Simulator::Schedule (Seconds (1.0), PrintFIBs);
    PrintFIBs ();
    
    Simulator::Schedule (Seconds (10.0), PrintTime);
    
    Simulator::Stop (finishTime);
    
    AnimationInterface *anim = 0;
    if (animationFile != "")
    {
        anim = new AnimationInterface (animationFile);
        anim->SetMobilityPollInterval (Seconds (1));
    }
    
    // NS_LOG_INFO ("Configure Tracing.");
    AggregateTrace trace;
    Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::CcnxConsumer/TransmittedInterests",
                     MakeCallback (&AggregateTrace::TransmittedInterests, &trace));
    
    Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::CcnxConsumer/ReceivedNacks",
                     MakeCallback (&AggregateTrace::ReceivedNacks, &trace));
    
    Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::CcnxProducer/ReceivedInterests",
                     MakeCallback (&AggregateTrace::ReceivedInterests, &trace));
    
    Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::CcnxProducer/TransmittedContentObjects",
                     MakeCallback (&AggregateTrace::TransmittedData, &trace));
    
    Config::Connect ("/NodeList/*/ApplicationList/*/$ns3::CcnxConsumer/ReceivedContentObjects",
                     MakeCallback (&AggregateTrace::ReceivedData, &trace));
    
    // Config::Connect("/NodeList/*/ns3::CcnxL3Protocol/TransmittedInterestTrace",
    //                                MakeCallback (&OnTransmittedInterest));
    // Config::Connect ("/NodeList/*/ns3::CcnxL3Protocol/ReceivedInterestTrace",
    //                    MakeCallback (&OnReceivedInterest));
    // Config::Connect ("/NodeList/*/ns3::CcnxL3Protocol/DroppedInterestTrace",
    //                    MakeCallback (&OnDroppedInterest));
    
    // Config::Connect ("/NodeList/*/ns3::CcnxL3Protocol/ReceivedDataTrace",
    //                    MakeCallback (&OnReceivedData));
    // Config::Connect ("/NodeList/*/ns3::CcnxL3Protocol/TransmittedDataTrace",
    //                    MakeCallback (&OnTransmittedData));
    // Config::Connect ("/NodeList/*/ns3::CcnxL3Protocol/DroppedDataTrace",
    //                    MakeCallback (&OnDroppedData));
    
    config.ConfigureAttributes ();  
    
    NS_LOG_INFO ("Run Simulation.");
    Simulator::Run ();
    Simulator::Destroy ();
    NS_LOG_INFO ("Done.");
    
    // NS_LOG_INFO("Total received interests = " << receivedInterests);
    // NS_LOG_INFO("Total transmitted interests = " << transmittedInterests);
    // NS_LOG_INFO("Total dropped interests = " << droppedInterests);
    // NS_LOG_INFO("Total received data = " << receivedData);
    // NS_LOG_INFO("Total transmitted data = " << transmittedData);
    // NS_LOG_INFO("Total dropped data = " << droppedData);
    NS_LOG_INFO (trace);
    return 0;
}