/**
 * @file ExternalEvent.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_EXTERNAL_EVENT
#define COMMON_EXTERNAL_EVENT 1

#include <artis-star/common/Model.hpp>
#include <artis-star/common/Node.hpp>
#include <artis-star/common/Value.hpp>

#include <boost/serialization/serialization.hpp>
#include <boost/serialization/nvp.hpp>

#include <sstream>
#include <string>
#include <vector>

namespace artis {
    namespace common {

        template<class Time>
        class Node;

        template<class Time>
        class Model;

        template<class Time>
        class ExternalEvent {
        public:
            ExternalEvent(const Value& data)
                    :
                    _port_index(-1), _model(nullptr), _data(data) { }

            ExternalEvent(int port_index)
                    :
                    _port_index(port_index), _model(nullptr), _data(Value()) { }

            ExternalEvent(int port_index, const Value& data)
                    :
                    _port_index(port_index), _model(nullptr), _data(data) { }

            ExternalEvent(const Node<Time>& node, const Value& data)
                    :
                    _port_index(node.get_port_index()),
                    _model(node.get_model()),
                    _data(data) { }

            ExternalEvent(const ExternalEvent& event)
                    :
                    _port_index(event._port_index), _model(event._model),
                    _data(event._data) { }

            ExternalEvent()
                    :_port_index(-2), _model(nullptr) { }

            virtual ~ExternalEvent() = default;

            const Value& data() const { return _data; }

            void data(const Value& data) { _data = data; }

            Model<Time>* get_model() const { return _model; }

            bool is_void() const { return _port_index == -2; }

            bool on_port(int port_index) const
            {

                assert(_port_index != -1);

                return _port_index == port_index;
            }

            ExternalEvent& operator=(const ExternalEvent& e)
            {
                _port_index = e._port_index;
                _model = e._model;
                _data = e._data;
                return *this;
            }

            int port_index() const
            {

                assert(_port_index != -1);

                return _port_index;
            }

            void set_model(Model<Time>* model) { _model = model; }

            std::string to_string() const
            {
                std::ostringstream ss;

                ss << "( ";
                if (_port_index != -1) {
                    ss << _port_index << " , ";
                }
                ss << (_model ? _model->get_name() : "<>")
                   << " , ";
                if (not _data.empty()) {
                    ss << _data.to_string();
                } else {
                    ss << "null";
                }
                ss << " )";
                return ss.str();
            }

            static ExternalEvent Void;

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

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

                ar & _port_index;
                _model = 0;
                // ar & _model;
                ar & _data;
                // ar & _model->get_name();
            }

            int _port_index;
            Model<Time>* _model;
            Value _data;
        };

        template<class Time>
        ExternalEvent<Time> ExternalEvent<Time>::Void;

    }
} // namespace artis common

#endif