/* -*- 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:  Alexander Afanasyev <alexander.afanasyev@ucla.edu>
 *          Ilya Moiseenko <iliamo@cs.ucla.edu>
 *
 */

#include "ndn-app-face.hpp"

#include "ns3/log.h"
#include "ns3/packet.h"
#include "ns3/node.h"
#include "ns3/assert.h"
#include "ns3/simulator.h"

#include "ns3/ndn-header-helper.hpp"
#include "ns3/ndn-app.hpp"

#include "ndn-interest.hpp"
#include "ndn-data.hpp"

NS_LOG_COMPONENT_DEFINE("ndn.AppFace");

namespace ns3 {
namespace ndn {

NS_OBJECT_ENSURE_REGISTERED(AppFace);

TypeId
AppFace::GetTypeId()
{
  static TypeId tid = TypeId("ns3::ndn::AppFace").SetParent<Face>().SetGroupName("Ndn");
  return tid;
}

AppFace::AppFace(Ptr<App> app)
  : Face(app->GetNode())
  , m_app(app)
{
  NS_LOG_FUNCTION(this << app);

  NS_ASSERT(m_app != 0);
  SetFlags(Face::APPLICATION);
}

AppFace::~AppFace()
{
  NS_LOG_FUNCTION_NOARGS();
}

AppFace::AppFace()
  : Face(0)
{
}

AppFace::AppFace(const AppFace&)
  : Face(0)
{
}

AppFace&
AppFace::operator= (const AppFace &)
{
  return *((AppFace*)0);
}

bool
AppFace::SendInterest(Ptr<const Interest> interest)
{
  NS_LOG_FUNCTION(this << interest);

  if (!IsUp()) {
    return false;
  }

  if (interest->GetNack() > 0)
    m_app->OnNack(interest);
  else
    m_app->OnInterest(interest);

  return true;
}

bool
AppFace::SendData(Ptr<const Data> data)
{
  NS_LOG_FUNCTION(this << data);

  if (!IsUp()) {
    return false;
  }

  m_app->OnData(data);
  return true;
}

std::ostream&
AppFace::Print(std::ostream& os) const
{
  os << "dev=local(" << GetId() << ")";
  return os;
}

} // namespace ndn
} // namespace ns3