/*
 * 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 2, 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * http://www.gnu.org/copyleft/gpl.html
 */

/**
 * @author FBIagent
 */

package net.sf.l2j.gameserver.datatables;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Map;

import javolution.util.FastMap;

import net.sf.l2j.L2DatabaseFactory;

public class PolymorphMonstersTable
{
	/** The internal instance of this class (only one instance need) */
	private static PolymorphMonstersTable _instance = null;
	/** List of monsters who polymorph */
	private Map<Integer, PolymorphMonster> _polymorphMonsters = new FastMap<Integer, PolymorphMonster>();
	
	/** Holds all monsters there can polymorph */
	private class PolymorphMonster
	{
		/** monster id */
		private int _mobId;
		/** List of polymoroph infos */
		private ArrayList<PolyInfo> _polyInfos = new ArrayList<PolyInfo>();
		
		/**
		 * Constructor
		 * @param mobId
		 */
		public PolymorphMonster(int mobId)
		{
			_mobId = mobId;
		}

		/**
		 * Add's a polymorph info
		 * @param polyId
		 * @param spawnDelay
		 * @param condition
		 * @param conditionValue
		 */
		public void addPolyInfo(int polyId, int spawnDelay, String cond, int condValue)
		{
			_polyInfos.add(new PolyInfo(polyId, spawnDelay, cond, condValue));
		}

		/**
		 * Returns the monster id
		 * @return int
		 */
		public int getMobId()
		{
			return _mobId;
		}
		
		/**
		 * Returns a polymorph info by index
		 * @param index
		 * @return int
		 */
		public PolyInfo getPolyInfo(int index)
		{
			if (index > _polyInfos.size()-1)
				return null;
			
			return _polyInfos.get(index);
		}
	}

	/**
	 * Constructor
	 */
	public PolymorphMonstersTable()
	{	
		java.sql.Connection con = null;

		try
		{
			con = L2DatabaseFactory.getInstance().getConnection();
			PreparedStatement statement = con.prepareStatement("SELECT `mobId`,`polyId`,`spawnDelay`,`condition`,`conditionValue` FROM `polymorph_monsters` ORDER BY `mobId` ASC, `order`;");
			ResultSet resultSet = statement.executeQuery();

			PolymorphMonster polymorphMonster = null;
			int lastMobId = 0,
				nextMobId = 0;

			while (resultSet.next())
			{
				if (polymorphMonster == null)
				{
					lastMobId = resultSet.getInt("mobId");
					polymorphMonster = new PolymorphMonster(lastMobId);
					polymorphMonster.addPolyInfo(resultSet.getInt("polyId"), resultSet.getInt("spawnDelay"), resultSet.getString("condition"), resultSet.getInt("conditionValue"));
					continue;
				}

				nextMobId = resultSet.getInt("mobId");

				if (nextMobId != lastMobId)
				{
					_polymorphMonsters.put(lastMobId, polymorphMonster);
					polymorphMonster = new PolymorphMonster(nextMobId);
					polymorphMonster.addPolyInfo(resultSet.getInt("polyId"), resultSet.getInt("spawnDelay"), resultSet.getString("condition"), resultSet.getInt("conditionValue"));
					lastMobId = nextMobId;
					continue;
				}

				polymorphMonster.addPolyInfo(resultSet.getInt("polyId"), resultSet.getInt("spawnDelay"), resultSet.getString("condition"), resultSet.getInt("conditionValue"));
			}
			
			_polymorphMonsters.put(nextMobId, polymorphMonster);
			polymorphMonster = null;
			
			resultSet.close();
			statement.close();
		}
		catch (Exception e)
		{
			System.out.println("Error while loading polymorph monsters: " + e);
		}
		finally
		{
			try { con.close(); } catch (Exception e) {}
			System.out.println("PolymorphMonstersTable: Loaded " + _polymorphMonsters.size() + " polymorph monsters.");
		}
	}

	/**
	 * Returns instance of PolymorphMonstersTable
	 * @return PolymorphMonstersTable
	 */
	public static PolymorphMonstersTable getInstance()
	{
		if (_instance == null)
			_instance = new PolymorphMonstersTable();

		return _instance;
	}
	
	/**
	 * Returns a polymorph info by mobId and polymorphed count
	 * @param mobId
	 * @param polyCount
	 * @return int
	 */
	public PolyInfo getPolyInfo(int mobId, int polyCount)
	{
			PolymorphMonster polyMonster = _polymorphMonsters.get(mobId);
			
			if (polyMonster == null)
				return null;

			return polyMonster.getPolyInfo(polyCount);
	}
}