/* -*- 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 <iostream>

#include <sstream>

// ns3 includes

#include "ns3/csma-star-helper.h"

#include "ns3/node-list.h"

#include "ns3/point-to-point-net-device.h"

#include "ns3/vector.h"

#include "ns3/log.h"

NS_LOG_COMPONENT_DEFINE ("CsmaStarHelper");

namespace ns3 {

CsmaStarHelper::CsmaStarHelper (uint32_t numSpokes,

                                CsmaHelper csmaHelper)

{

  m_hub.Create (1);

  m_spokes.Create (numSpokes);

  for (uint32_t i = 0; i < m_spokes.GetN (); ++i)

    {

      NodeContainer nodes (m_hub.Get (0), m_spokes.Get (i));

      NetDeviceContainer nd = csmaHelper.Install (nodes);

      m_hubDevices.Add (nd.Get (0));

      m_spokeDevices.Add (nd.Get (1));

    }

}

CsmaStarHelper::~CsmaStarHelper ()

{

}

Ptr<Node>

CsmaStarHelper::GetHub () const

{

  return m_hub.Get (0);

}

Ptr<Node>

CsmaStarHelper::GetSpokeNode (uint32_t i) const

{

  return m_spokes.Get (i);

}

NetDeviceContainer

CsmaStarHelper::GetHubDevices () const

{

  return m_hubDevices;

}

NetDeviceContainer

CsmaStarHelper::GetSpokeDevices () const

{

  return m_spokeDevices;

}

Ipv4Address 

CsmaStarHelper::GetHubIpv4Address (uint32_t i) const

{

  return m_hubInterfaces.GetAddress (i);

}

Ipv4Address 

CsmaStarHelper::GetSpokeIpv4Address (uint32_t i) const

{

  return m_spokeInterfaces.GetAddress (i);

}

Ipv6Address

CsmaStarHelper::GetHubIpv6Address (uint32_t i) const

{

  return m_hubInterfaces6.GetAddress (i, 1);

}

Ipv6Address

CsmaStarHelper::GetSpokeIpv6Address (uint32_t i) const

{

  return m_spokeInterfaces6.GetAddress (i, 1);

}

uint32_t

CsmaStarHelper::SpokeCount () const

{

  return m_spokes.GetN ();

}

void 

CsmaStarHelper::InstallStack (InternetStackHelper stack)

{

  stack.Install (m_hub);

  stack.Install (m_spokes);

}

void 

CsmaStarHelper::AssignIpv4Addresses (Ipv4AddressHelper address)

{

  for (uint32_t i = 0; i < m_spokes.GetN (); ++i)

    {

      m_hubInterfaces.Add (address.Assign (m_hubDevices.Get (i)));

      m_spokeInterfaces.Add (address.Assign (m_spokeDevices.Get (i)));

      address.NewNetwork ();

    }

}

void 

CsmaStarHelper::AssignIpv6Addresses (Ipv6Address network, Ipv6Prefix prefix)

{

  Ipv6AddressGenerator::Init(network, prefix);

  Ipv6Address v6network;

  Ipv6AddressHelper addressHelper;

  for (uint32_t i = 0; i < m_spokes.GetN (); ++i)

    {

      v6network = Ipv6AddressGenerator::GetNetwork (prefix);

      Ipv6InterfaceContainer ic = addressHelper.Assign (m_hubDevices.Get (i));

      m_hubInterfaces6.Add (ic);

      ic = addressHelper.Assign (m_spokeDevices.Get (i));

      m_spokeInterfaces6.Add (ic);

      Ipv6AddressGenerator::NextNetwork (prefix);

    }

}

} // namespace ns3