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

/*

 * Copyright (c) 2008,2009 IITP RAS

 *

 * 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: Kirill Andreev <andreev@iitp.ru>

 */

#include "ns3/core-module.h"

#include "ns3/simulator-module.h"

#include "ns3/node-module.h"

#include "ns3/helper-module.h"

#include "ns3/global-routing-module.h"

#include "ns3/wifi-module.h"

#include "ns3/mesh-module.h"

#include "ns3/mobility-module.h"

#include "ns3/dot11s-helper.h"

using namespace ns3;

using namespace dot11s;

NS_LOG_COMPONENT_DEFINE ("TestMeshScript");

int

main (int argc, char *argv[])

{

  // Creating square topology with nNodes x nNodes grid

  int       xSize           = 3;

  int       ySize           = 3;

  double    step            = 100.0;

  double    randomStart     = 0.1;

  double    totalTime       = 100.0;

  double    packetInterval  = 0.001;

  uint16_t  packetSize      = 1024;

  uint32_t  nIfaces         = 2;

  bool      chan            = true;

  bool      pcap            = false;

  uint64_t  seed            =1;

  // Command line arguments

  CommandLine cmd;

  cmd.AddValue ("x-size", "Number of nodes in a row grid. [6]", xSize);

  cmd.AddValue ("y-size", "Number of rows in a grid. [6]", ySize);

  cmd.AddValue ("step",   "Size of edge in our grid, meters. [100 m]", step);

  cmd.AddValue ("start",  "Maximum random start delay, seconds. [0.1 s]", randomStart);

  cmd.AddValue ("time",  "Simulation time", totalTime);

  cmd.AddValue ("packetInterval",  "Interval between packets", packetInterval);

  cmd.AddValue ("packetSize",  "Size of packets", packetSize);

  cmd.AddValue ("interfaces", "Number of radio interfaces used by each mesh point. [1]", nIfaces);

  cmd.AddValue ("channels",   "Use different frequency channels for different interfaces. [0]", chan);

  cmd.AddValue ("pcap",   "Enable PCAP traces on interfaces. [0]", pcap);

  cmd.AddValue ("seed",   "Seed value", seed);

  cmd.Parse (argc, argv);

  NS_LOG_DEBUG ("Grid:" << xSize << "*" << ySize);

  SeedManager::SetSeed(seed);

  // Creating nodes

  NodeContainer nodes;

  nodes.Create (ySize*xSize);

  // Setting channel

  YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();

  YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();

  wifiPhy.SetChannel (wifiChannel.Create ());

  // Install mesh point devices & protocols

  MeshWifiHelper mesh;

  mesh.SetSpreadInterfaceChannels (chan);

  std::vector<uint32_t> roots;

  //roots.push_back(xSize-1);

  NetDeviceContainer meshDevices = mesh.Install (wifiPhy, nodes, roots, nIfaces);

  // Setup mobility

  MobilityHelper mobility;

  mobility.SetPositionAllocator ("ns3::GridPositionAllocator",

                                 "MinX", DoubleValue (0.0),

                                 "MinY", DoubleValue (0.0),

                                 "DeltaX", DoubleValue (step),

                                 "DeltaY", DoubleValue (step),

                                 "GridWidth", UintegerValue (xSize),

                                 "LayoutType", StringValue ("RowFirst"));

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

  mobility.Install (nodes);

  NS_LOG_UNCOND("start");

  // Install internet stack

  InternetStackHelper stack;

  stack.Install (nodes);

  Ipv4AddressHelper address;

  address.SetBase ("10.1.1.0", "255.255.255.0");

  Ipv4InterfaceContainer interfaces = address.Assign (meshDevices);

  // Install applications

  UdpEchoServerHelper echoServer (9);

  ApplicationContainer serverApps = echoServer.Install (nodes.Get (0));

  serverApps.Stop (Seconds (totalTime));

  UdpEchoClientHelper echoClient (interfaces.GetAddress (0), 9);

  echoClient.SetAttribute ("MaxPackets", UintegerValue ((uint32_t)(totalTime*(1/packetInterval))));

  echoClient.SetAttribute ("Interval", TimeValue (Seconds (packetInterval)));

  echoClient.SetAttribute ("PacketSize", UintegerValue (packetSize));

  ApplicationContainer clientApps = echoClient.Install (nodes.Get (xSize*ySize-1));

  clientApps.Stop (Seconds (totalTime));

  // Enable PCAP trace

  if (pcap)

      wifiPhy.EnablePcapAll (std::string ("mp-") + mesh.GetSsid ().PeekString ());

  // Happy end

  Simulator::Stop (Seconds (totalTime));

  Simulator::Run ();

  Simulator::Destroy ();

  return 0;

}