/**
 * @file common/GraphManager.hpp
 * @author The ARTIS Development Team
 * See the AUTHORS or Authors.txt file
 */

/*
 * ARTIS - the multimodeling and simulation environment
 * This file is a part of the ARTIS environment
 *
 * Copyright (C) 2013-2019 ULCO http://www.univ-littoral.fr
 *
 * This program 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.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef COMMON_GRAPH_MANAGER
#define COMMON_GRAPH_MANAGER

#include <artis-star/common/Coordinator.hpp>
#include <artis-star/common/Links.hpp>
#include <artis-star/common/Model.hpp>
#include <artis-star/common/Parameters.hpp>
#include <artis-star/common/utils/String.hpp>

#include <sstream>

namespace artis {
namespace common {

template<class Time>
class GraphManager {
public:
  GraphManager(common::Coordinator<Time> *coordinator)
      :
      _coordinator(coordinator) {}

  virtual ~GraphManager() {}

  virtual void add_child(unsigned int index, common::Model<Time> *child) {
    _children.push_back(child);
    _child_map[index] = child;
    child->set_parent(_coordinator);
  }

  virtual void add_children(unsigned int index, common::Model<Time> *child) {
    _children.push_back(child);
    if (_children_map.find(index) == _children_map.end()) {
      _children_map[index] = Models<Time>();
    }
    _children_map[index].push_back(child);
    child->set_parent(_coordinator);
  }

  const common::Models<Time> &children() const { return _children; }

  const common::ModelMap<Time> &child_map() const { return _child_map; }

  common::Model<Time> *child_map(size_t index) const { return _child_map.at(index); }

  const common::ModelsMap<Time> &children_map() const { return _children_map; }

  common::Coordinator<Time> *coordinator() const { return _coordinator; }

  virtual void remove_child(unsigned int index) {
    common::Model<Time> *child = _child_map[index];

    _children.erase(std::find(_children.begin(), _children.end(), child));
    _child_map[index] = nullptr;
    _child_map.erase(index);
  }

  void restore(const common::context::State<Time> &state) {
    for (typename common::ModelMap<Time>::iterator it = _child_map.begin(); it != _child_map.end();
         ++it) {
      it->second->restore(state.get_substate(it->first));
    }
  }

  void save(common::context::State<Time> &state) const {
    for (typename common::ModelMap<Time>::const_iterator it = _child_map.begin();
         it != _child_map.end(); ++it) {
      context::State<Time> substate;

      it->second->save(substate);
      state.add_substate(it->first, substate);
    }
  }

protected:
  common::Models<Time> _children;
  common::ModelMap<Time> _child_map;
  common::ModelsMap<Time> _children_map;
  common::Coordinator<Time> *_coordinator;
};

}
} // namespace artis common

#endif