/**
 * @file kernel/dtss/Coordinator.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 DTSS_POLICY
#define DTSS_POLICY 1

#include <artis-star/common/Bag.hpp>

#include <cassert>

namespace artis {
    namespace dtss {

        class Policy {
        public:
            Policy() = default;

            virtual ~Policy() = default;

            const common::Bag<common::DoubleTime>& bag() const { return _bag; }

            void clear() { _bag.clear(); }

            void push(const common::ExternalEvent<common::DoubleTime>& event) { _bag.push_back(event); }

        private:
            common::Bag<common::DoubleTime> _bag;
        };

        class AllEventsPolicy : public Policy {
        public:
            AllEventsPolicy() = default;

            virtual ~AllEventsPolicy() = default;

            virtual void operator()(
                    typename common::DoubleTime::type /* t */,
                    const common::ExternalEvent<common::DoubleTime>& event,
                    typename common::DoubleTime::type /* tl */,
                    typename common::DoubleTime::type /* tn */)
            {
                push(event);
            }
        };

        class LastBagPolicy : public Policy {
        public:
            LastBagPolicy() = default;

            virtual ~LastBagPolicy() = default;

            virtual void operator()(
                    typename common::DoubleTime::type /* t */,
                    const common::ExternalEvent<common::DoubleTime>& event,
                    typename common::DoubleTime::type /* tl */,
                    typename common::DoubleTime::type /* tn */)
            {
                clear();
                push(event);
            }
        };

        class IgnorePolicy : public Policy {
        public:
            IgnorePolicy() = default;
            virtual ~IgnorePolicy() = default;

            virtual void operator()(
                    typename common::DoubleTime::type /* t */,
                    const common::ExternalEvent<common::DoubleTime>& /* event */,
                    typename common::DoubleTime::type /* tl */,
                    typename common::DoubleTime::type /* tn */) { }
        };

    }
}

#endif