/*
	Copyright © 2016 Gluzskiy Alexandr (sss)

    This file is part of Unknown Download Manager (UDM).

    UDM 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.

    UDM 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 UDM.  If not, see <http://www.gnu.org/licenses/>.

*/


#include <list>

#include "api_core_events.h"
#include "server_session.h"
#include "utilities.h"
#include "../../protocol/udm.pb.h"
#include "api_module_base.h"
#include <boost/log/trivial.hpp>

extern lockable_container<std::list<server_session*> > sessions;
extern lockable_container<std::map<int, download_internal_s> > downloads;

namespace core_events
{
	
void core_events::download_state_changed(module_base *m, std::list<download_state_info> state_list) //TODO: multiple downloads at once should be supported
{
	//TODO: redesign, very unefficient implementation (reverse search in downloads list should be eleminated)
	server_msg msg;
	msg.set_type(SERVER_MSG_TYPE::SERVER_DOWNLOAD_STATE_CHANGE);
	downloads.lock();
	for(auto s : state_list)
	{
		for(auto d : downloads)
		{
			if(d.second.module_name == m->get_module_info().name)
			{
				if(s.download_id == d.second.module_id)
				{
					download_state_change *sc =msg.add_download_state_changes();
					sc->set_download_id(d.first);
					switch(s.state)
					{
						case download_state::download_stopped:
						sc->set_state(SUBSCRIPTION_DOWNLOAD_STATE::SDS_STOPPED);
						break;
						case download_state::download_running:
						sc->set_state(SUBSCRIPTION_DOWNLOAD_STATE::SDS_STARTED);
						break;
						default:
						BOOST_LOG_TRIVIAL(debug)<<__FILE__<<":"<<__LINE__<<"\t"<<__func__<<"\nunhandled download state change event";
						break;
						
					}
				}
			}
		}
	}
	downloads.unlock();
	sessions.lock();
	for(auto p : sessions)
	{
		p->fire_event(SUBSCRIPTION_TYPE::ST_DOWNLOAD_STATE_CHANGE, msg);
	}
	sessions.unlock();
}

};