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

/*

 * Copyright (c) 2010 CTTC

 *

 * 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: Nicola Baldo <nbaldo@cttc.es>

 */

#include <iostream>

#include <ns3/core-module.h>

#include <ns3/common-module.h>

#include <ns3/node-module.h>

#include <ns3/simulator-module.h>

#include <ns3/spectrum-model-ism2400MHz-res1MHz.h>

#include <ns3/spectrum-model-300kHz-300GHz-log.h>

#include <ns3/wifi-spectrum-value-helper.h>

#include <ns3/multi-model-spectrum-channel.h>

#include <ns3/waveform-generator.h>

#include <ns3/spectrum-analyzer.h>

#include <ns3/log.h>

#include <string>

#include <ns3/friis-spectrum-propagation-loss.h>

#include <ns3/propagation-delay-model.h>

#include <ns3/mobility-module.h>

#include <ns3/spectrum-helper.h>

#include <ns3/helper-module.h>

#include <ns3/adhoc-aloha-noack-ideal-phy-helper.h>

#include <ns3/waveform-generator-helper.h>

#include <ns3/spectrum-analyzer-helper.h>

#include <ns3/non-communicating-net-device.h>

#include <ns3/microwave-oven-spectrum-value-helper.h>

NS_LOG_COMPONENT_DEFINE ("OfdmWithWaveformGenerator");

using namespace ns3;

static bool g_verbose = false;

void

PhyTxStartTrace (std::string context, Ptr<const Packet> p)

{  

  if (g_verbose)

    {

      std::cout << context << " PHY TX START p: " << p << std::endl;

    }

}

void

PhyTxEndTrace (std::string context, Ptr<const Packet> p)

{  

  if (g_verbose)

    {

      std::cout << context << " PHY TX END p: " << p << std::endl;

    }

}

void

PhyRxStartTrace (std::string context, Ptr<const Packet> p)

{

  if (g_verbose)

    {

      std::cout << context << " PHY RX START p:" << p << std::endl; 

    }

}

void

PhyRxEndOkTrace (std::string context, Ptr<const Packet> p)

{

  if (g_verbose)

    {

      std::cout << context << " PHY RX END OK p:" << p << std::endl; 

    }

}

void

PhyRxEndErrorTrace (std::string context, Ptr<const Packet> p)

{

  if (g_verbose)

    {

      std::cout << context << " PHY RX END ERROR p:" << p << std::endl; 

    }

}

void

ReceivePacket (Ptr<Socket> socket)

{

  Ptr<Packet> packet;

  uint64_t bytes = 0;

  while (packet = socket->Recv ())

    {

      bytes += packet->GetSize ();

    }

  if (g_verbose)

    {

      std::cout << "SOCKET received " << bytes << " bytes" <<std::endl; 

    }

}

Ptr<Socket>

SetupPacketReceive (Ptr<Node> node)

{

  TypeId tid = TypeId::LookupByName ("ns3::PacketSocketFactory");

  Ptr<Socket> sink = Socket::CreateSocket (node, tid);

  sink->Bind ();

  sink->SetRecvCallback (MakeCallback (&ReceivePacket));

  return sink;

}

int main (int argc, char** argv)

{

  CommandLine cmd;

  cmd.AddValue ("verbose", "Print trace information if true", g_verbose);

  cmd.Parse (argc, argv);

  NodeContainer ofdmNodes;

  NodeContainer waveformGeneratorNodes;

  NodeContainer spectrumAnalyzerNodes;

  NodeContainer allNodes;

  ofdmNodes.Create (2);

  waveformGeneratorNodes.Create (1);

  spectrumAnalyzerNodes.Create (1);

  allNodes.Add (ofdmNodes);

  allNodes.Add (waveformGeneratorNodes);

  allNodes.Add (spectrumAnalyzerNodes);

  MobilityHelper mobility;

  Ptr<ListPositionAllocator> nodePositionList = CreateObject<ListPositionAllocator> ();

  nodePositionList->Add (Vector (5.0, 0.0, 0.0));  // TX node

  nodePositionList->Add (Vector (0.0, 0.0, 0.0));  // RX node

  nodePositionList->Add (Vector (10.0, 0.0, 0.0)); // Microwave Oven

  nodePositionList->Add (Vector (0.0, 0.0, 0.0));  // Spectrum Analyzer

  mobility.SetPositionAllocator (nodePositionList);

  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");

  mobility.Install (allNodes);

  SpectrumChannelHelper channelHelper = SpectrumChannelHelper::Default ();

  channelHelper.SetChannel ("ns3::MultiModelSpectrumChannel");

  Ptr<SpectrumChannel> channel = channelHelper.Create ();

  /////////////////////////

  // Configure ofdm nodes

  ////////////////////////

  WifiSpectrumValue5MhzFactory sf;

  double txPower = 0.1; // Watts

  uint32_t channelNumber = 2;

  Ptr<SpectrumValue> txPsd =  sf.CreateTxPowerSpectralDensity (txPower, channelNumber);  

  // for the noise, we use the Power Spectral Density of thermal noise

  // at room temperature. The value of the PSD will be constant over the band of interest.  

  const double k = 1.381e-23; //Boltzmann's constant

  const double T = 290; // temperature in Kelvin

  double noisePsdValue = k*T; // watts per hertz

  Ptr<SpectrumValue> noisePsd = sf.CreateConstant (noisePsdValue); 

  AdhocAlohaNoackIdealPhyHelper adhocAlohaOfdmHelper;

  adhocAlohaOfdmHelper.SetChannel(channel);

  adhocAlohaOfdmHelper.SetTxPowerSpectralDensity (txPsd);

  adhocAlohaOfdmHelper.SetNoisePowerSpectralDensity (noisePsd);

  adhocAlohaOfdmHelper.SetPhyAttribute ("Rate", DataRateValue (DataRate ("1Mbps")));

  NetDeviceContainer ofdmDevices = adhocAlohaOfdmHelper.Install (ofdmNodes);

  PacketSocketHelper packetSocket;

  packetSocket.Install (ofdmNodes);

  PacketSocketAddress socket;

  socket.SetSingleDevice(ofdmDevices.Get (0)->GetIfIndex ());

  socket.SetPhysicalAddress (ofdmDevices.Get (1)->GetAddress ());

  socket.SetProtocol (1);

  OnOffHelper onoff ("ns3::PacketSocketFactory", Address (socket));

  onoff.SetAttribute ("OnTime", RandomVariableValue (ExponentialVariable (0.4)));

  onoff.SetAttribute ("OffTime", RandomVariableValue (ExponentialVariable (0.1)));

  onoff.SetAttribute ("DataRate", DataRateValue (DataRate ("0.4Mbps")));

  onoff.SetAttribute ("PacketSize", UintegerValue (1500));

  ApplicationContainer apps = onoff.Install (ofdmNodes.Get (0));

  apps.Start (Seconds (0.0));

  apps.Stop (Seconds (2));

  Ptr<Socket> recvSink = SetupPacketReceive (ofdmNodes.Get (1));

  /////////////////////////////////

  // Configure waveform generator

  /////////////////////////////////

  Ptr<SpectrumValue> mwoPsd =  MicrowaveOvenSpectrumValueHelper::CreatePowerSpectralDensityMwo1 ();

  NS_LOG_INFO ("mwoPsd : " << *mwoPsd);

  WaveformGeneratorHelper waveformGeneratorHelper;

  waveformGeneratorHelper.SetChannel(channel);

  waveformGeneratorHelper.SetTxPowerSpectralDensity (mwoPsd);

  waveformGeneratorHelper.SetPhyAttribute ("Period", TimeValue(Seconds(1.0/60)));   // corresponds to 60 Hz 

  waveformGeneratorHelper.SetPhyAttribute ("DutyCycle", DoubleValue(0.5));

  NetDeviceContainer waveformGeneratorDevices = waveformGeneratorHelper.Install (waveformGeneratorNodes);

  Simulator::Schedule(Seconds(0.1), &WaveformGenerator::Start, 

  		      waveformGeneratorDevices.Get (0)->GetObject<NonCommunicatingNetDevice> ()->GetPhy ()->GetObject<WaveformGenerator> ());

  /////////////////////////////////

  // Configure spectrum analyzer

  /////////////////////////////////

  SpectrumAnalyzerHelper spectrumAnalyzerHelper;

  spectrumAnalyzerHelper.SetChannel(channel);

  spectrumAnalyzerHelper.SetRxSpectrumModel (SpectrumModelIsm2400MhzRes1Mhz);

  spectrumAnalyzerHelper.SetPhyAttribute ("Resolution", TimeValue(MilliSeconds (2)));   

  spectrumAnalyzerHelper.SetPhyAttribute ("NoisePowerSpectralDensity", DoubleValue (1e-15));  // -120 dBm/Hz

  spectrumAnalyzerHelper.EnableAsciiAll ("spectrum-analyzer-output");   

  NetDeviceContainer spectrumAnalyzerDevices = spectrumAnalyzerHelper.Install (spectrumAnalyzerNodes);

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/TxStart", MakeCallback (&PhyTxStartTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/TxEnd", MakeCallback (&PhyTxEndTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/RxStart", MakeCallback (&PhyRxStartTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/RxEndOk", MakeCallback (&PhyRxEndOkTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/RxEndError", MakeCallback (&PhyRxEndErrorTrace));

Simulator::Stop (Seconds (0.3));

Simulator::Run ();

Simulator::Destroy ();

}