/**
 * @file artis-star/common/context/State.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_CONTEXT_STATE_HPP
#define COMMON_CONTEXT_STATE_HPP

#include <artis-star/common/context/StateValues.hpp>

#include <map>

#include <boost/serialization/serialization.hpp>
#include <boost/serialization/map.hpp>
#include <boost/serialization/vector.hpp>

namespace artis {
    namespace common {
        namespace context {

            template<class Time>
            class State {
                typedef std::map<unsigned int, State<Time> > Substates;

            public:
                State()
                        :_last_time(-1), _next_time(-1) { }

                virtual ~State() { }

                void add_state(unsigned int variable_key, const Value& value)
                {
                    _values.add_state(variable_key, value);
                }

                void add_substate(unsigned int model_key, State& state)
                {
                    _substates.insert(std::make_pair(model_key, state));
                }

                const Value& get_state(unsigned int variable_key) const
                {
                    return _values.get_state(variable_key);
                }

                const State<Time>& get_substate(unsigned int model_key) const
                {
                    return _substates.find(model_key)->second;
                }

                typename Time::type last_time() const { return _last_time; }

                void last_time(typename Time::type t) { _last_time = t; }

                typename Time::type next_time() const { return _next_time; }

                void next_time(typename Time::type t) { _next_time = t; }

                std::string to_string() const
                {
                    std::string str = "last_time: " + std::to_string(_last_time) +
                            "; next_time: " + std::to_string(_next_time) +
                            "; values: " + _values.to_string() + "; sub_states: [ ";

                    for (typename Substates::const_iterator it = _substates.begin();
                         it != _substates.end(); ++it) {
                        str += it->second.to_string() + " ";
                    }
                    str += "]";
                    return str;
                }

            private:
                friend class boost::serialization::access;

                template<class Archive>
                void serialize(Archive& ar, const unsigned int version)
                {
                    (void) version;

                    ar & _values;
                    ar & _substates;
                    ar & _last_time;
                    ar & _next_time;
                }

                StateValues _values;
                Substates _substates;
                typename Time::type _last_time;
                typename Time::type _next_time;
            };

        }
    }
}

#endif