/*
 * Project: MoleCuilder
 * Description: creates and alters molecular systems
 * Copyright (C)  2013 Frederik Heber. All rights reserved.
 * 
 *
 *   This file is part of MoleCuilder.
 *
 *    MoleCuilder 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 2 of the License, or
 *    (at your option) any later version.
 *
 *    MoleCuilder 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 MoleCuilder.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * Graveyard.cpp
 *
 *  Created on: Sep 5, 2013
 *      Author: heber
 */

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

//#include "CodePatterns/MemDebug.hpp"

#include "CodePatterns/Observer/Graveyard.hpp"
#include "CodePatterns/Observer/ObserverLog.hpp"

#include <boost/bind.hpp>

#include "CodePatterns/Log.hpp"

Graveyard::Graveyard() :
  graveyard_informer( boost::bind(&Graveyard::ObserverLeft, this, _1) )
{}

Graveyard::~Graveyard()
{
  if (graveyard.size() != 0)
    ELOG(1, "There are still zombies left in the graveyard.");
}

void Graveyard::turnZombie(Observable *&_observable)
{
//  LOG(1, "Adding Observable "+toString(_observable)+".");
#ifdef LOG_OBSERVER
  observerLog().addMessage(0) << "++ Turning " << observerLog().getName(_observable)
      << " into a Zombie.";
#endif
  Zombie::ptr newzombie(new Zombie(_observable, &graveyard_informer));
  if (newzombie->getNumberOfObservers() != 0)
    graveyard.insert( std::make_pair(newzombie->getPtr(), newzombie) );
}

void Graveyard::ObserverLeft(const Observable *_observable)
{
  graveyard_t::iterator iter = graveyard.find(_observable);
  if (iter != graveyard.end()) {
#ifdef LOG_OBSERVER
  observerLog().addMessage(0) << "++ Zombie " << observerLog().getName(const_cast<Observable *>(_observable))
      << " has " << iter->second->getNumberOfObservers() << " Observers left.";
#endif
    // remove zombie if no Observers are left
    if (iter->second->getNumberOfObservers() == 0)
      graveyard.erase(iter);
  } else {
    ELOG(1, "Zombie to Observable "+toString(_observable)+" is not known.");
  }
}