/*
 * Project: MoleCuilder
 * Description: creates and alters molecular systems
 * Copyright (C)  2016 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/>.
 */

/*
 * AtomFragmentsMap.cpp
 *
 *  Created on: Mar 7, 2016
 *      Author: heber
 */


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

#include "CodePatterns/MemDebug.hpp"

#include "CodePatterns/Log.hpp"

#include "AtomFragmentsMap.hpp"

#include "AtomIdSet.hpp"
#include "Fragmentation/Graph.hpp"
#include "Fragmentation/KeySet.hpp"

AtomFragmentsMap::AtomFragmentsMap(
    const Graph &_graph,
    size_t _MaxOrder)
{
  /// create a map of atom to keyset (below equal MaxOrder)
  LOG(1, "INFO: Placing all atoms and their keysets into a map.");
  for (Graph::const_iterator keysetiter = _graph.begin();
      keysetiter != _graph.end(); ++keysetiter) {
    const KeySet &keyset = keysetiter->first;
    LOG(2, "DEBUG: Current keyset is " << keyset);
    if ((keyset.size() > _MaxOrder) || (keyset.empty()))
      continue;
    for (KeySet::const_iterator keyiter = keyset.begin();
        keyiter != keyset.end(); ++keyiter) {
      // either create new list ...
      std::pair<AtomFragmentsMap_t::iterator, bool> inserter =
          atommap.insert( std::make_pair(*keyiter, keysets_t(1, keyset) ));
      // ... or push to end
      if (inserter.second) {
        LOG(3, "DEBUG: Created new entry in map.");
      } else {
        LOG(3, "DEBUG: Added keyset to present entry.");
        inserter.first->second.push_back(keyset);
      }
    }
  }
  LOG(2, "DEBUG: There are " << atommap.size() << " entries in lookup.");
}