/* Copyright 2011 sss
 * This file is part of evil_core.
 * 
 * evil_core 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.
 * 
 * evil_core 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 evil_core.  If not, see <http://www.gnu.org/licenses/>.*/

#include "commonheaders.h"


const int evt_handler::getType()
{
	return evt_type;
}

evt_handler::evt_handler(int type)
{
	evt_type = type;
}

void evt_handler::AddHandler(EVENT_HANDLER add_handler)
{
	handler.connect(add_handler);
}
void* evt_handler::Execute(void* data)
{
	return handler(data);
}

int RegisterEventHandler(int type, EVENT_HANDLER func)
{
	if(!event_handlers.empty())
	{
		event_handlers_mutex.lock();
		std::list<evt_handler*>::iterator end = event_handlers.end();
		for(std::list<evt_handler*>::iterator i = event_handlers.begin(); i != end; ++i)
		{
			if((*i)->getType() == type)
			{
				(*i)->AddHandler(func);
				logger.log(LM_DEBUG, "succesfuly added handler for event %d.\n", type);
				event_handlers_mutex.unlock();
				return 0;
			}
		}
		event_handlers_mutex.unlock();
	}
	logger.log(LM_DEBUG, "failed to add handler for event %d, event %d not registerd to any plugin or core", type,type);
	return 1;
}
int RegisterEventType(int type, int specialid)
{
	plugin *p = NULL;
	if(!plugins.empty())
	{
		plugin_list_mutex.lock();
		std::list<plugin*>::iterator end = plugins.end();
		for(std::list<plugin*>::iterator i = plugins.begin(); i!= end; ++i)
		{
			if((*i)->get_plugin_id() == specialid)
			{
				p = *i;
				logger.log(LM_DEBUG, "special id %d is right, plugin \"%s\" is in plugin list.\n", specialid, toUTF8(p->get_plugininfo()->name).c_str());
				break;
			}
		}
		plugin_list_mutex.unlock();
		if(!p)
		{
			logger.log(LM_DEBUG, "event registration for plugin: \"%s\" failed, trying to register event with wrong special id %d, right special id for this plugin is %d.\n", toUTF8(p->get_plugininfo()->name).c_str(), specialid, p->get_plugininfo()->pluginid);
			return 1;
		}
	}
	else
	{
		logger.log(LM_DEBUG, "event registration failed, something very bad happened, we have not plugin list\n");
		return 1;
	}
	if(!event_handlers.empty())
	{
		event_handlers_mutex.lock();
		std::list<evt_handler*>::iterator end = event_handlers.end();
		for(std::list<evt_handler*>::iterator i = event_handlers.begin(); i != end; ++i)
		{
			if((*i)->getType() == type)
			{
				logger.log(LM_DEBUG, "event registration for plugin \"%s\" failed, event already registered", toUTF8(p->get_plugininfo()->name).c_str());
				event_handlers_mutex.unlock();
				return 1;
			}
		}
		event_handlers_mutex.unlock();
	}
	event_handlers.push_back(new evt_handler(type));
	p->register_event(type);
	logger.log(LM_DEBUG, "event %d registration for plugin \"%s\" succesful.\n", type, toUTF8(p->get_plugininfo()->name).c_str());
	return 0;
}

void* ExecuteEvent(int type, int pluginid, void* data)
{
	if(!event_handlers.empty())
	{
		std::list<evt_handler*>::iterator end = event_handlers.end();
		for(std::list<evt_handler*>::iterator i = event_handlers.begin(); i != end; ++i)
		{
			if((*i)->getType() == type)
			{
				logger.log(LM_DEBUG, "event %d found, executing...\n", type);
				return (*i)->Execute(data);
			}
		}
	}
	logger.log(LM_DEBUG, "event %d not found...\n", type);
	return 0;
}