// ndn-simple.cc
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/point-to-point-module.h"
#include "ns3/point-to-point-layout-module.h"
#include "ns3/ndnSIM-module.h"

using namespace ns3;
int
main (int argc, char *argv[])
{
  // Setting default parameters for PointToPoint links and channels
  Config::SetDefault ("ns3::PointToPointNetDevice::DataRate", StringValue ("5Mbps"));
  Config::SetDefault ("ns3::PointToPointChannel::Delay", StringValue ("2ms"));
  Config::SetDefault ("ns3::DropTailQueue::MaxPackets", StringValue ("10"));

  // Read optional command-line parameters (e.g., enable visualizer with ./waf --run=<> --visualize
  CommandLine cmd;
  cmd.Parse (argc, argv);

  // Creating 10x10 topology
  PointToPointHelper p2p;
  PointToPointGridHelper grid (10, 10, p2p);
  grid.BoundingBox(1,1,200,200);

  // Install NDN stack on all nodes
  ndn::StackHelper ndnHelper;
  ndnHelper.SetForwardingStrategy ("ns3::ndn::fw::Flooding");
  ndnHelper.InstallAll ();

  // Installing global routing interface on all nodes
  ndn::GlobalRoutingHelper ndnGlobalRoutingHelper;
  ndnGlobalRoutingHelper.InstallAll ();

  // Getting containers for the consumer/producer
  Ptr<Node> producer = grid.GetNode (0, 5);
  NodeContainer consumerNodes;
  consumerNodes.Add (grid.GetNode (0,0));

  // Install NDN applications
  std::string prefix = "/prefix";

  ndn::AppHelper consumerHelper ("ns3::ndn::ConsumerCbr");
  consumerHelper.SetPrefix (prefix);
  consumerHelper.SetAttribute ("Frequency", StringValue ("2")); // 100 interests a second
  consumerHelper.Install (consumerNodes);

  ndn::AppHelper producerHelper ("ns3::ndn::Producer");
  producerHelper.SetPrefix (prefix);
  producerHelper.SetAttribute ("PayloadSize", StringValue("1024"));
  producerHelper.Install (producer);

  // Add /prefix origins to ndn::GlobalRouter
  ndnGlobalRoutingHelper.AddOrigins (prefix, producer);

  // Calculate and install FIBs
  ndn::GlobalRoutingHelper::CalculateRoutes ();

  Simulator::Stop (Seconds (5.0));

  Simulator::Run ();
  Simulator::Destroy ();

  return 0;
}