/*
 * 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/>.
 */
package net.sf.l2j.gameserver.taskmanager;

import java.util.Map;
import java.util.NoSuchElementException;
import java.util.logging.Logger;

import javolution.util.FastMap;
import net.sf.l2j.gameserver.ThreadPoolManager;
import net.sf.l2j.gameserver.model.L2Character;
import net.sf.l2j.gameserver.model.actor.instance.L2RaidBossInstance;

/**
 * @author la2
 * Lets drink to code!
 */
public class DecayTaskManager
{
    protected static final Logger _log = Logger.getLogger(DecayTaskManager.class.getName());
	protected Map<L2Character,Long> _decayTasks = new FastMap<L2Character,Long>().setShared(true);

    private static DecayTaskManager _instance;

    public DecayTaskManager()
    {
    	ThreadPoolManager.getInstance().scheduleAiAtFixedRate(new DecayScheduler(),10000,5000);
    }

    public static DecayTaskManager getInstance()
    {
        if(_instance == null)
            _instance = new DecayTaskManager();

        return _instance;
    }

    public void addDecayTask(L2Character actor)
    {
        _decayTasks.put(actor,System.currentTimeMillis());
    }

    public void addDecayTask(L2Character actor, int interval)
    {
        _decayTasks.put(actor,System.currentTimeMillis()+interval);
    }

    public void cancelDecayTask(L2Character actor)
    {
    	try
    	{
    		_decayTasks.remove(actor);
    	}
    	catch(NoSuchElementException e){}
    }

    private class DecayScheduler implements Runnable
    {
    	protected DecayScheduler()
    	{
    		// Do nothing
    	}

        public void run()
        {
            Long current = System.currentTimeMillis();
            int delay;
            try
            {
            	if (_decayTasks != null)
            		for(L2Character actor : _decayTasks.keySet())
            		{
            			if(actor instanceof L2RaidBossInstance) delay = 30000;
            			else delay = 8500;
            			if((current - _decayTasks.get(actor)) > delay)
            			{
            				actor.onDecay();
            				_decayTasks.remove(actor);
            			}
            		}
            } catch (Throwable e) {
				// TODO: Find out the reason for exception. Unless caught here, mob decay would stop.
            	_log.warning(e.toString());
			}
        }
    }

    @Override
	public String toString()
    {
        String ret = "============= DecayTask Manager Report ============\r\n";
        ret += "Tasks count: "+_decayTasks.size()+"\r\n";
        ret += "Tasks dump:\r\n";

        Long current = System.currentTimeMillis();
        for( L2Character actor : _decayTasks.keySet())
        {
            ret += "Class/Name: "+actor.getClass().getSimpleName()+"/"+actor.getName()
            +" decay timer: "+(current - _decayTasks.get(actor))+"\r\n";
        }

        return ret;
    }
}