/*
 * $Header: MinionList.java, 25/10/2005 18:42:48 luisantonioa Exp $
 *
 * $Author: luisantonioa $
 * $Date: 25/10/2005 18:42:48 $
 * $Revision: 1 $
 * $Log: MinionList.java,v $
 * Revision 1  25/10/2005 18:42:48  luisantonioa
 * Added copyright notice
 *
 *
* 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 com.l2jserver.gameserver.util;

import java.util.List;
import java.util.Set;
import java.util.logging.Logger;

import com.l2jserver.Config;
import com.l2jserver.gameserver.datatables.NpcTable;
import com.l2jserver.gameserver.idfactory.IdFactory;
import com.l2jserver.gameserver.model.L2MinionData;
import com.l2jserver.gameserver.model.actor.instance.L2MinionInstance;
import com.l2jserver.gameserver.model.actor.instance.L2MonsterInstance;
import com.l2jserver.gameserver.templates.chars.L2NpcTemplate;
import com.l2jserver.util.Rnd;

import javolution.util.FastList;
import javolution.util.FastMap;
import javolution.util.FastSet;

/**
 * This class ...
 *
 * @version $Revision: 1.2 $ $Date: 2004/06/27 08:12:59 $
 */

public class MinionList
{
	private static Logger _log = Logger.getLogger(L2MonsterInstance.class.getName());
	
	/** List containing the current spawned minions for this L2MonsterInstance */
	private final List<L2MinionInstance> minionReferences;
	protected FastMap<Long, Integer> _respawnTasks = new FastMap<Long, Integer>().shared();
	private final L2MonsterInstance master;
	
	public MinionList(L2MonsterInstance pMaster)
	{
		minionReferences = new FastList<L2MinionInstance>();
		master = pMaster;
	}
	
	public int countSpawnedMinions()
	{
		synchronized (minionReferences)
		{
			return minionReferences.size();
		}
	}
	
	public int countSpawnedMinionsById(int minionId)
	{
		int count = 0;
		synchronized (minionReferences)
		{
			for (L2MinionInstance minion : getSpawnedMinions())
			{
				if (minion.getNpcId() == minionId)
				{
					count++;
				}
			}
		}
		return count;
	}
	
	public boolean hasMinions()
	{
		return !getSpawnedMinions().isEmpty();
	}
	
	public List<L2MinionInstance> getSpawnedMinions()
	{
		return minionReferences;
	}
	
	public void addSpawnedMinion(L2MinionInstance minion)
	{
		synchronized (minionReferences)
		{
			minionReferences.add(minion);
		}
	}
	
	public int lazyCountSpawnedMinionsGroups()
	{
		Set<Integer> seenGroups = new FastSet<Integer>();
		for (L2MinionInstance minion : getSpawnedMinions())
		{
			if (minion == null)
				continue;
			
			seenGroups.add(minion.getNpcId());
		}
		return seenGroups.size();
	}
	
	public void removeSpawnedMinion(L2MinionInstance minion)
	{
		synchronized (minionReferences)
		{
			minionReferences.remove(minion);
		}
	}
	
	public void moveMinionToRespawnList(L2MinionInstance minion)
	{
		Long current = System.currentTimeMillis();
		synchronized (minionReferences)
		{
			minionReferences.remove(minion);
			if (_respawnTasks.get(current) == null)
				_respawnTasks.put(current, minion.getNpcId());
			else
			{
				// nice AoE
				for (int i = 1; i < 30; i++)
				{
					if (_respawnTasks.get(current + i) == null)
					{
						_respawnTasks.put(current + i, minion.getNpcId());
						break;
					}
				}
			}
		}
	}
	
	public void clearRespawnList()
	{
		_respawnTasks.clear();
	}
	
	/**
	 * Manage respawning of minions for this RaidBoss.<BR><BR>
	 */
	public void maintainMinions()
	{
		if (master == null || master.isAlikeDead())
			return;
		Long current = System.currentTimeMillis();
		if (_respawnTasks != null)
			for (long deathTime : _respawnTasks.keySet())
			{
				double delay = Config.RAID_MINION_RESPAWN_TIMER;
				if ((current - deathTime) > delay)
				{
					spawnSingleMinion(_respawnTasks.get(deathTime), master.getInstanceId());
					_respawnTasks.remove(deathTime);
				}
			}
	}
	
	/**
	 * Manage the spawn of all Minions of this RaidBoss.<BR><BR>
	 *
	 * <B><U> Actions</U> :</B><BR><BR>
	 * <li>Get the Minion data of all Minions that must be spawn </li>
	 * <li>For each Minion type, spawn the amount of Minion needed </li><BR><BR>
	 *
	 * @param player The L2PcInstance to attack
	 *
	 */
	public void spawnMinions()
	{
		if (master == null || master.isAlikeDead())
			return;
		List<L2MinionData> minions = master.getTemplate().getMinionData();
		
		if (minions == null)
			return;
		synchronized (minionReferences)
		{
			int minionCount, minionId, minionsToSpawn;
			for (L2MinionData minion : minions)
			{
				minionCount = minion.getAmount();
				minionId = minion.getMinionId();
				
				minionsToSpawn = minionCount - countSpawnedMinionsById(minionId);
				
				for (int i = 0; i < minionsToSpawn; i++)
				{
					spawnSingleMinion(minionId, master.getInstanceId());
				}
			}
		}
	}
	
	/**
	 * Init a Minion and add it in the world as a visible object.<BR><BR>
	 *
	 * <B><U> Actions</U> :</B><BR><BR>
	 * <li>Get the template of the Minion to spawn </li>
	 * <li>Create and Init the Minion and generate its Identifier </li>
	 * <li>Set the Minion HP, MP and Heading </li>
	 * <li>Set the Minion leader to this RaidBoss </li>
	 * <li>Init the position of the Minion and add it in the world as a visible object </li><BR><BR>
	 *
	 * @param minionid The I2NpcTemplate Identifier of the Minion to spawn
	 *
	 */
	public void spawnSingleMinion(int minionId, int instanceId)
	{
		// Get the template of the Minion to spawn
		L2NpcTemplate minionTemplate = NpcTable.getInstance().getTemplate(minionId);
		
		// Create and Init the Minion and generate its Identifier
		L2MinionInstance monster = new L2MinionInstance(IdFactory.getInstance().getNextId(), minionTemplate);
		
		// Set the Minion HP, MP and Heading
		monster.setCurrentHpMp(monster.getMaxHp(), monster.getMaxMp());
		monster.setHeading(master.getHeading());
		
		// Set the Minion leader to this RaidBoss
		monster.setLeader(master);
		
		//move monster to masters instance
		monster.setInstanceId(instanceId);
		
		// Init the position of the Minion and add it in the world as a visible object
		final int offset = 200;
		final int minRadius = 30;

		int newX = Rnd.get(minRadius * 2, offset * 2); // x
		int newY = Rnd.get(newX, offset * 2); // distance
		newY = (int)Math.sqrt(newY*newY - newX*newX); // y
		if (newX > offset + minRadius)
			newX = master.getX() + newX - offset;
		else
			newX = master.getX() - newX + minRadius;
		if (newY > offset + minRadius)
			newY = master.getY() + newY - offset;
		else
			newY = master.getY() - newY + minRadius;

		monster.spawnMe(newX, newY, master.getZ());
		
		if (Config.DEBUG)
			_log.fine("Spawned minion template " + minionTemplate.npcId + " with objid: " + monster.getObjectId() + " to boss " + master.getObjectId() + " ,at: " + monster.getX() + " x, " + monster.getY() + " y, " + monster.getZ() + " z");
	}
}