/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2012-2014 University of California, Los Angeles
 *
 * This file is part of ChronoSync, synchronization library for distributed realtime
 * applications for NDN.
 *
 * ChronoSync is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * ChronoSync 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
 * ChronoSync, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Zhenkai Zhu <http://irl.cs.ucla.edu/~zhenkai/>
 * @author Chaoyi Bian <bcy@pku.edu.cn>
 * @author Alexander Afanasyev <http://lasr.cs.ucla.edu/afanasyev/index.html>
 */

#include "sync-std-name-info.h"

// using namespace std;
using namespace boost;

namespace Sync {


NameInfoConstPtr
StdNameInfo::FindOrCreate (const std::string &key)
{
  // std::cout << "FindOrCreate: " << m_names.size () << "\n";

  NameInfoConstPtr ret;

  NameMap::iterator item = m_names.find (key);
  if (item != m_names.end ())
    {
      ret = item->second.lock ();
      BOOST_ASSERT (ret != 0);
    }
  else
    {
      ret = NameInfoPtr (new StdNameInfo (key));
      weak_ptr<const NameInfo> value (ret);
      std::pair<NameMap::iterator,bool> inserted =
        m_names.insert (make_pair (key, value));

      BOOST_ASSERT (inserted.second); // previous call has to insert value
      item = inserted.first;
    }

  return ret;
}

StdNameInfo::StdNameInfo (const std::string &name)
  : m_name (name)
{
  m_id = m_ids ++; // set ID for a newly inserted element
  m_digest << name;
  m_digest.finalize ();

  // std::cout << "StdNameInfo: " << name << " = " << m_id << "\n";
}

StdNameInfo::~StdNameInfo ()
{
  // cout << "Destructor for " << m_name << "\n";
  m_names.erase (toString ());
}

std::string
StdNameInfo::toString () const
{
  return m_name;
}

bool
StdNameInfo::operator == (const NameInfo &info) const
{
  return m_name == dynamic_cast<const StdNameInfo&> (info).m_name;
}

bool
StdNameInfo::operator < (const NameInfo &info) const
{
  return m_name < dynamic_cast<const StdNameInfo&> (info).m_name;
}

} // Sync