/*
 * Project: MoleCuilder
 * Description: creates and alters molecular systems
 * Copyright (C)  2010 University of Bonn. All rights reserved.
 * Please see the LICENSE file or "Copyright notice" in builder.cpp for details.
 */

/*
 * Channels.cpp
 *
 *  Created on: Dec 1, 2011
 *      Author: heber
 */

// include config.h
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "CodePatterns/MemDebug.hpp"

#include <boost/thread/locks.hpp>

#include "CodePatterns/Assert.hpp"

#include "CodePatterns/Observer/Channels.hpp"
#include "CodePatterns/Observer/Notification.hpp"


Channels::Channels()
{}

Channels::~Channels()
{
  boost::recursive_mutex::scoped_lock guard(ChannelLock);
  // free all present Notifications
  for(NotificationTypetoRefMap::iterator iter = ChannelMap.begin();
      !ChannelMap.empty(); iter = ChannelMap.begin()) {
    removeChannel(iter->first);
  }
}

void Channels::addChannel(size_t no)
{
  boost::recursive_mutex::scoped_lock guard(ChannelLock);
#ifndef NDEBUG
  NotificationTypetoRefMap::const_iterator iter = ChannelMap.find(no);
  ASSERT(iter == ChannelMap.end(),
      "Channels::addChannel() - channel "+toString(int(no))+" is already present in ChannelMap.");
#endif
  ChannelMap.insert( std::make_pair(no, new Notification(no)) );
}

void Channels::removeChannel(size_t no)
{
  boost::recursive_mutex::scoped_lock guard(ChannelLock);
  NotificationTypetoRefMap::iterator iter = ChannelMap.find(no);
  ASSERT(iter != ChannelMap.end(),
      "Channels::removeChannel() - channel "+toString(int(no))+" not present in ChannelMap.");
  delete iter->second;
  ChannelMap.erase(iter);
}

void Channels::subjectKilled(Observable * const publisher)
{
  boost::recursive_mutex::scoped_lock guard(ChannelLock);
  for(NotificationTypetoRefMap::iterator iter = ChannelMap.begin();
      iter != ChannelMap.end();++iter) {
    iter->second->subjectKilled(publisher);
  }
}

Notification_ptr Channels::getChannel(size_t no) const
{
  boost::recursive_mutex::scoped_lock guard(ChannelLock);
  NotificationTypetoRefMap::const_iterator iter = ChannelMap.find(no);
  ASSERT(iter != ChannelMap.end(),
      "Channels::getChannel() - channel "+toString(int(no))+" not present in ChannelMap.");
  return iter->second;
}

size_t Channels::getType(Notification_ptr channel) const
{
  boost::recursive_mutex::scoped_lock guard(ChannelLock);
  return channel->getChannelNo();
}