/*
 * Copyright (c) 2010 Universita' di Firenze, Italy
 *
 * 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: Tommaso Pecorella (tommaso.pecorella@unifi.it)
 * Author: Valerio Sartini (valesar@gmail.com)
 */

#include "ns3/topology-reader-helper.h"

#include "ns3/inet-topology-reader.h"
#include "ns3/log.h"
#include "ns3/object.h"
#include "ns3/orbis-topology-reader.h"
#include "ns3/rocketfuel-topology-reader.h"

/**
 * \file
 * \ingroup topology
 * ns3::TopologyHelper implementation.
 */

namespace ns3
{

NS_LOG_COMPONENT_DEFINE("TopologyReaderHelper");

TopologyReaderHelper::TopologyReaderHelper()
{
    m_inputModel = nullptr;
}

void
TopologyReaderHelper::SetFileName(const std::string fileName)
{
    m_fileName = fileName;
}

void
TopologyReaderHelper::SetFileType(const std::string fileType)
{
    m_fileType = fileType;
}

Ptr<TopologyReader>
TopologyReaderHelper::GetTopologyReader()
{
    if (!m_inputModel)
    {
        NS_ASSERT_MSG(!m_fileType.empty(), "Missing File Type");
        NS_ASSERT_MSG(!m_fileName.empty(), "Missing File Name");

        if (m_fileType == "Orbis")
        {
            NS_LOG_INFO("Creating Orbis formatted data input.");
            m_inputModel = CreateObject<OrbisTopologyReader>();
        }
        else if (m_fileType == "Inet")
        {
            NS_LOG_INFO("Creating Inet formatted data input.");
            m_inputModel = CreateObject<InetTopologyReader>();
        }
        else if (m_fileType == "Rocketfuel")
        {
            NS_LOG_INFO("Creating Rocketfuel formatted data input.");
            m_inputModel = CreateObject<RocketfuelTopologyReader>();
        }
        else
        {
            NS_ASSERT_MSG(false, "Wrong (unknown) File Type");
        }

        m_inputModel->SetFileName(m_fileName);
    }
    return m_inputModel;
}

} // namespace ns3
