/*
 * This file is part of the L2J Mobius project.
 * 
 * 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.l2jmobius.gameserver.instancemanager;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

import com.l2jmobius.Config;
import com.l2jmobius.gameserver.model.L2World;
import com.l2jmobius.gameserver.model.actor.instance.L2PcInstance;
import com.l2jmobius.gameserver.model.zone.L2ZoneType;
import com.l2jmobius.gameserver.model.zone.ZoneId;
import com.l2jmobius.gameserver.model.zone.type.L2JumpZone;
import com.l2jmobius.gameserver.network.serverpackets.ExFlyMove;
import com.l2jmobius.gameserver.network.serverpackets.FlyToLocation;
import com.l2jmobius.gameserver.network.serverpackets.FlyToLocation.FlyType;

/**
 * JumpManager
 * @author ALF
 */
public class JumpManager
{
	private static final Logger _log = Logger.getLogger(JumpManager.class.getName());
	private final Map<Integer, Track> _tracks = new HashMap<>();
	
	public class Track extends HashMap<Integer, JumpWay>
	{
		public int x = 0;
		public int y = 0;
		public int z = 0;
	}
	
	public class JumpWay extends ArrayList<JumpNode>
	{
	}
	
	public class JumpNode
	{
		private final int _x;
		private final int _y;
		private final int _z;
		private final int _next;
		
		public JumpNode(int x, int y, int z, int next)
		{
			_x = x;
			_y = y;
			_z = z;
			_next = next;
		}
		
		public int getX()
		{
			return _x;
		}
		
		public int getY()
		{
			return _y;
		}
		
		public int getZ()
		{
			return _z;
		}
		
		public int getNext()
		{
			return _next;
		}
	}
	
	protected JumpManager()
	{
		load();
	}
	
	public void load()
	{
		_tracks.clear();
		final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		factory.setValidating(false);
		factory.setIgnoringComments(true);
		final File file = new File(Config.DATAPACK_ROOT, "JumpTrack.xml");
		Document doc = null;
		
		if (file.exists())
		{
			try
			{
				doc = factory.newDocumentBuilder().parse(file);
			}
			catch (Exception e)
			{
				_log.log(Level.WARNING, "Could not parse JumpTrack.xml file: " + e.getMessage(), e);
				return;
			}
			final Node root = doc.getFirstChild();
			for (Node t = root.getFirstChild(); t != null; t = t.getNextSibling())
			{
				if (t.getNodeName().equals("track"))
				{
					final Track track = new Track();
					final int trackId = Integer.parseInt(t.getAttributes().getNamedItem("trackId").getNodeValue());
					try
					{
						track.x = Integer.parseInt(t.getAttributes().getNamedItem("ToX").getNodeValue());
						track.y = Integer.parseInt(t.getAttributes().getNamedItem("ToY").getNodeValue());
						track.z = Integer.parseInt(t.getAttributes().getNamedItem("ToZ").getNodeValue());
					}
					catch (Exception e)
					{
						_log.info("track id:" + trackId + " missing tox toy toz");
					}
					for (Node w = t.getFirstChild(); w != null; w = w.getNextSibling())
					{
						if (w.getNodeName().equals("way"))
						{
							final JumpWay jw = new JumpWay();
							final int wayId = Integer.parseInt(w.getAttributes().getNamedItem("id").getNodeValue());
							for (Node j = w.getFirstChild(); j != null; j = j.getNextSibling())
							{
								if (j.getNodeName().equals("jumpLoc"))
								{
									final NamedNodeMap attrs = j.getAttributes();
									final int next = Integer.parseInt(attrs.getNamedItem("next").getNodeValue());
									final int x = Integer.parseInt(attrs.getNamedItem("x").getNodeValue());
									final int y = Integer.parseInt(attrs.getNamedItem("y").getNodeValue());
									final int z = Integer.parseInt(attrs.getNamedItem("z").getNodeValue());
									jw.add(new JumpNode(x, y, z, next));
								}
							}
							track.put(wayId, jw);
						}
					}
					_tracks.put(trackId, track);
				}
			}
		}
		_log.info(getClass().getSimpleName() + ": Loaded " + _tracks.size() + " Jump Routes.");
	}
	
	public int getTrackId(L2PcInstance player)
	{
		for (L2ZoneType zone : L2World.getInstance().getRegion(player.getX(), player.getY()).getZones())
		{
			if (zone.isCharacterInZone(player) && (zone instanceof L2JumpZone))
			{
				return ((L2JumpZone) zone).getTrackId();
			}
		}
		return -1;
	}
	
	public Track getTrack(int trackId)
	{
		return _tracks.get(trackId);
	}
	
	public JumpWay getJumpWay(int trackId, int wayId)
	{
		final Track t = _tracks.get(trackId);
		if (t != null)
		{
			return t.get(wayId);
		}
		return null;
	}
	
	public void StartJump(L2PcInstance player)
	{
		if (!player.isInsideZone(ZoneId.JUMP))
		{
			return;
		}
		player.setJumpTrackId(getTrackId(player));
		if (player.getJumpTrackId() == -1)
		{
			return;
		}
		final JumpWay jw = getJumpWay(player.getJumpTrackId(), 0);
		if (jw == null)
		{
			return;
		}
		final Track t = getTrack(player.getJumpTrackId());
		if (!((t.x == 0) && (t.y == 0) && (t.z == 0)))
		{
			player.broadcastPacket(new FlyToLocation(player, t.x, t.y, t.z, FlyType.DUMMY));
			player.setXYZ(t.x, t.y, t.z);
		}
		player.sendPacket(new ExFlyMove(player.getObjectId(), player.getJumpTrackId(), jw));
	}
	
	public void NextJump(L2PcInstance player, int nextId)
	{
		if (player.getJumpTrackId() == -1)
		{
			return;
		}
		
		final JumpWay jw = getJumpWay(player.getJumpTrackId(), nextId);
		if (jw == null)
		{
			player.enableAllSkills(); // unlock player skills
			return;
		}
		player.sendPacket(new ExFlyMove(player.getObjectId(), player.getJumpTrackId(), jw));
		final JumpNode n = jw.get(0);
		player.setXYZ(n.getX(), n.getY(), n.getZ());
	}
	
	public static final JumpManager getInstance()
	{
		return SingletonHolder._instance;
	}
	
	private static class SingletonHolder
	{
		protected static final JumpManager _instance = new JumpManager();
	}
}