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

#include "ns3/core-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/network-module.h"
#include "ns3/applications-module.h"

#include "ns3/mobility-module.h"
#include "ns3/mobility-model.h"
#include "ns3/csma-module.h"
#include "ns3/propagation-loss-model.h"
#include "ns3/internet-module.h"
#include "ns3/propagation-delay-model.h"
#include "ns3/wifi-mac-helper.h"
#include "ns3/yans-wifi-channel.h"
#include "ns3/yans-wifi-helper.h"
#include <iostream>
#include "ns3/cost231-propagation-loss-model.h"


// Default Network Topology
//
//  Wifi 10.1.1.0
//
//  *            *
//  |            |
// n0(transm)   n1(receiver)




using namespace ns3;



NS_LOG_COMPONENT_DEFINE ("LAB1");


int
main (int argc, char *argv[])
{
  bool verbose = true;
  uint32_t nWifi = 2;

  CommandLine cmd;
  cmd.AddValue ("nWifi", "Number of wifi STA devices", nWifi);
  cmd.AddValue ("verbose", "Tell echo applications to log if true", verbose);
  cmd.Parse (argc,argv);

  if (nWifi > 18)
    {
      std::cout << "Number of wifi nodes " << nWifi <<
                   " specified exceeds the mobility bounding box" << std::endl;
      exit (1);
    }

  if (verbose)
    {
      LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);
      LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);
    }

/////////////////////////////Nodes/////////////////////////////
  NodeContainer wifiStaNodes;
  wifiStaNodes.Create (nWifi);


 /////////////////////////////Wi-Fi part/////////////////////////////

  Ptr<YansWifiChannel> channel = CreateObject <YansWifiChannel> ();  //create a pointer for channel object
  Ptr<Cost231PropagationLossModel> lossModel = CreateObject<Cost231PropagationLossModel> (); //create a pointer for propagation loss model
  channel->SetPropagationLossModel (lossModel); // install propagation loss model
  channel->SetPropagationDelayModel (CreateObject <ConstantSpeedPropagationDelayModel> ()); // install propagation delay model

  Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue ("2200"));
  Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue ("2200"));


  YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
  phy.SetChannel (channel);
  phy.Set("TxPowerEnd", DoubleValue(16));
  phy.Set("TxPowerStart", DoubleValue(16));
  phy.Set("RxSensitivity", DoubleValue(-80));
//  phy.Set("CcaMode1Threshold", DoubleValue(-99));
  phy.Set("ChannelNumber", UintegerValue(7));
  phy.Set("RxGain", DoubleValue(0));
  phy.Set("TxGain", DoubleValue(0));



  WifiHelper wifi = WifiHelper();
  wifi.SetStandard (WIFI_PHY_STANDARD_80211a);
 // wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager", "DataMode",StringValue ("DsssRate11Mbps"), "ControlMode",StringValue ("DsssRate11Mbps"), "RtsCtsThreshold", UintegerValue(3000));
// wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager", "DataMode",StringValue ("OfdmRate54Mbps"), "ControlMode",StringValue ("OfdmRate54Mbps"), "RtsCtsThreshold", UintegerValue(3000));

///////////////////////////////////////////////////////////c
wifi.SetRemoteStationManager ("ns3::ArfWifiManager", "SuccessThreshold",StringValue ("1") );
//////////////////////////////////////////////////////////

  WifiMacHelper mac = WifiMacHelper();
  mac.SetType ("ns3::AdhocWifiMac");

/////////////////////////////Devices/////////////////////////////
  NetDeviceContainer staDevices;
  staDevices = wifi.Install (phy, mac, wifiStaNodes);

 /////////////////////////////Deployment/////////////////////////////
      MobilityHelper mobility;
      Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
      positionAlloc->Add (Vector (0.0, 0.0, 1.0));
      positionAlloc->Add (Vector (43.1, 0.0, 1.0)); //251.1 for two way ground propagation model

      mobility.SetPositionAllocator (positionAlloc);
      mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
      mobility.Install (wifiStaNodes);

/////////////////////////////Stack of protocols/////////////////////////////

  InternetStackHelper stack;
  stack.Install (wifiStaNodes);

  Ipv4AddressHelper address;

 /////////////////////////////Ip addresation/////////////////////////////
  address.SetBase ("10.1.1.0", "255.255.255.0");
  Ipv4InterfaceContainer wifiInterfaces;
  wifiInterfaces = address.Assign (staDevices);


/////////////////////////////Application part/////////////////////////////
  UdpEchoServerHelper echoServer (9);

  ApplicationContainer serverApps = echoServer.Install (wifiStaNodes.Get (nWifi-1));
  serverApps.Start (Seconds (1.0));
  serverApps.Stop (Seconds (30.0));

  UdpEchoClientHelper echoClient (wifiInterfaces.GetAddress (nWifi-1), 9);
  echoClient.SetAttribute ("MaxPackets", UintegerValue (15));
  echoClient.SetAttribute ("Interval", TimeValue (Seconds (1.0)));
  echoClient.SetAttribute ("PacketSize", UintegerValue (1000));

  ApplicationContainer clientApps =   echoClient.Install (wifiStaNodes.Get (0));
  clientApps.Start (Seconds (2.0));
  clientApps.Stop (Seconds (20.0));


Ptr<MobilityModel> mobil = wifiStaNodes.Get(0)->GetObject<MobilityModel> ();
Ptr<MobilityModel> mobil2 = wifiStaNodes.Get(1)->GetObject<MobilityModel> ();


double powrx;
powrx=lossModel->CalcRxPower(16,mobil, mobil2);
std::cout << powrx <<  " "<< std::endl; //out system loss

//Ptr<TwoRayGroundPropagationLossModel> propmode = wifiStaNodes.Get(0)->GetObject<TwoRayGroundPropagationLossModel> ();
//double pos;
//pos=propmode->GetSystemLoss();
//std::cout << pos <<  " distance "<< std::endl;

//Ptr<YansWifiPhyHelper> propmode =  wifiStaNodes.Get(0)->GetObject<YansWifiPhyHelper> ();
//std::cout << propmode <<  " "<< std::endl;
//Time m_dalay_m_m2= propmode->GetDelay(mobil, mobil2);

//TypeId propid = propmode->GetInstanceTypeId();
//std1threshold::cout << propid.GetName()  <<  " distance "<< std::endl;



  Simulator::Stop (Seconds (30.0));
/////////////////////////////PCAP tracing/////////////////////////////
  phy.EnablePcap ("LAB1", staDevices .Get (nWifi-1), true);
  phy.EnablePcap ("LAB1", staDevices .Get (0), true);


  Simulator::Run ();
  Simulator::Destroy ();
return 0;
};