/*
 * 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.model.zone;

import java.util.List;

import javolution.util.FastList;
import javolution.util.FastMap;
import net.sf.l2j.gameserver.model.L2Character;
import net.sf.l2j.gameserver.model.L2Object;
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;

/**
 * Abstract base class for any zone type
 * Handles basic operations
 *
 * @author  durgus
 */
public abstract class L2ZoneType
{
	private final int _id;
	protected List<L2ZoneForm> _zone;
	protected FastMap<Integer, L2Character> _characterList;
	protected FastMap<Integer, Integer> _zones;
	
	/** Parameters to affect specific characters */
	private boolean _checkAffected;
	
	private int _minLvl;
	private int _maxLvl;
	private int[] _race;
	private int[] _class;
	private char _classType;
	
	protected L2ZoneType(int id)
	{
		_id = id;
		_characterList = new FastMap<Integer, L2Character>().setShared(true);
		_zones = new FastMap<Integer, Integer>().setShared(true);
		
		_checkAffected = false;
		
		_minLvl = 0;
		_maxLvl = 0xFF;
		
		_classType = 0;
		
		_race = null;
		_class = null;
	}
	
	/**
	 * @return Returns the id.
	 */
	public int getId()
	{
		return _id;
	}
	
	/**
	 * Setup new parameters for this zone
	 * @param type
	 * @param value
	 */
	public void setParameter(String name, String value)
	{
		_checkAffected = true;
		
		// Minimum level
		if (name.equals("affectedLvlMin"))
		{
			_minLvl = Integer.parseInt(value);
		}
		// Maximum level
		else if (name.equals("affectedLvlMax"))
		{
			_maxLvl = Integer.parseInt(value);
		}
		// Affected Races
		else if (name.equals("affectedRace"))
		{
			// Create a new array holding the affected race
			if (_race == null)
			{
				_race = new int[1];
				_race[0] = Integer.parseInt(value);
			}
			else
			{
				int[] temp = new int[_race.length + 1];
				
				int i = 0;
				for (; i < _race.length; i++)
					temp[i] = _race[i];
				
				temp[i] = Integer.parseInt(value);
				
				_race = temp;
			}
		}
		// Affected classes
		else if (name.equals("affectedClassId"))
		{
			// Create a new array holding the affected classIds
			if (_class == null)
			{
				_class = new int[1];
				_class[0] = Integer.parseInt(value);
			}
			else
			{
				int[] temp = new int[_class.length + 1];
				
				int i = 0;
				for (; i < _class.length; i++)
					temp[i] = _class[i];
				
				temp[i] = Integer.parseInt(value);
				
				_class = temp;
			}
		}
		// Affected class type
		else if (name.equals("affectedClassType"))
		{
			if (value.equals("Fighter"))
			{
				_classType = 1;
			}
			else
			{
				_classType = 2;
			}
		}
	}
	
	/**
	 * Checks if the given character is affected by this zone
	 * @param character
	 * @return
	 */
	private boolean isAffected(L2Character character)
	{
		// Check lvl
		if (character.getLevel() < _minLvl || character.getLevel() > _maxLvl)
			return false;
		
		if (character instanceof L2PcInstance)
		{
			// Check class type
			if (_classType != 0)
			{
				if (((L2PcInstance) character).isMageClass())
				{
					if (_classType == 1)
						return false;
				}
				else if (_classType == 2)
					return false;
			}
			
			// Check race
			if (_race != null)
			{
				boolean ok = false;
				
				for (int i = 0; i < _race.length; i++)
				{
					if (((L2PcInstance) character).getRace().ordinal() == _race[i])
					{
						ok = true;
						break;
					}
				}
				
				if (!ok)
					return false;
			}
			
			// Check class
			if (_class != null)
			{
				boolean ok = false;
				
				for (int i = 0; i < _class.length; i++)
				{
					if (((L2PcInstance) character).getClassId().ordinal() == _class[i])
					{
						ok = true;
						break;
					}
				}
				
				if (!ok)
					return false;
			}
		}
		return true;
	}
	
	/**
	 * Set the zone for this L2ZoneType Instance
	 * @param zone
	 */
	public void setZone(L2ZoneForm zone)
	{
		getZones().add(zone);
	}
	
	/**
	 * Returns this zones zone form
	 * @param zone
	 * @return
	 */
	public L2ZoneForm getZone()
	{
		for (L2ZoneForm zone : getZones())
		{
			return zone;
		}
		return null;
	}
	
	public final List<L2ZoneForm> getZones()
	{
		if (_zone == null)
			_zone = new FastList<L2ZoneForm>();
		return _zone;
	}
	
	/**
	 * Checks if the given coordinates are within the zone
	 * @param x
	 * @param y
	 * @param z
	 */
	public boolean isInsideZone(int x, int y, int z)
	{
		for (L2ZoneForm zone : getZones())
		{
			if (zone.isInsideZone(x, y, z))
				return true;
		}
		return false;
	}
	
	/**
	 * Checks if the given object is inside the zone.
	 *
	 * @param object
	 */
	public boolean isInsideZone(L2Object object)
	{
		return isInsideZone(object.getX(), object.getY(), object.getZ());
	}
	
	public double getDistanceToZone(int x, int y)
	{
		return getZone().getDistanceToZone(x, y);
	}
	
	public double getDistanceToZone(L2Object object)
	{
		return getZone().getDistanceToZone(object.getX(), object.getY());
	}
	
	public void revalidateInZone(L2Character character)
	{
		// If the character can't be affected by this zone return
		if (_checkAffected)
		{
			if (!isAffected(character))
				return;
		}
		
		// If the object is inside the zone...
		if (isInsideZone(character.getX(), character.getY(), character.getZ()))
		{
			// Was the character not yet inside this zone?
			if (!_characterList.containsKey(character.getObjectId()))
			{
				_characterList.put(character.getObjectId(), character);
				onEnter(character);
			}
		}
		else
		{
			// Was the character inside this zone?
			if (_characterList.containsKey(character.getObjectId()))
			{
				_characterList.remove(character.getObjectId());
				onExit(character);
			}
		}
	}
	
	/**
	 * Force fully removes a character from the zone
	 * Should use during teleport / logoff
	 * @param character
	 */
	public void removeCharacter(L2Character character)
	{
		if (_characterList.containsKey(character.getObjectId()))
		{
			_characterList.remove(character.getObjectId());
			onExit(character);
		}
	}
	
	/**
	 * Will scan the zones char list for the character
	 * @param character
	 * @return
	 */
	public boolean isCharacterInZone(L2Character character)
	{
		return _characterList.containsKey(character.getObjectId());
	}
	
	protected abstract void onEnter(L2Character character);
	
	protected abstract void onExit(L2Character character);
	
	public abstract void onDieInside(L2Character character);
	
	public abstract void onReviveInside(L2Character character);
	
	public FastMap<Integer, L2Character> getCharactersInside()
	{
		return _characterList;
	}
}
