/*
 * 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.l2jfrozen.gameserver.managers;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.List;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.logging.Logger;

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

import com.l2jfrozen.Config;
import com.l2jfrozen.FService;
import com.l2jfrozen.gameserver.datatables.SkillTable;
import com.l2jfrozen.gameserver.model.L2Character;
import com.l2jfrozen.gameserver.model.L2Clan;
import com.l2jfrozen.gameserver.model.L2Object;
import com.l2jfrozen.gameserver.model.Location;
import com.l2jfrozen.gameserver.model.actor.instance.L2PcInstance;
import com.l2jfrozen.gameserver.model.entity.siege.Fort;
import com.l2jfrozen.gameserver.model.entity.siege.FortSiege;
import com.l2jfrozen.gameserver.network.SystemMessageId;
import com.l2jfrozen.gameserver.network.serverpackets.SystemMessage;
import com.l2jfrozen.util.CloseUtil;
import com.l2jfrozen.util.database.L2DatabaseFactory;

public class FortSiegeManager
{
	private static final Logger _log = Logger.getLogger(FortSiegeManager.class.getName());

	// =========================================================
	private static FortSiegeManager _instance;

	public static final FortSiegeManager getInstance()
	{
		if(_instance == null)
		{
			_log.info("Initializing FortSiegeManager");
			_instance = new FortSiegeManager();
			_instance.load();
		}
		return _instance;
	}

	// =========================================================
	// Data Field
	private int _attackerMaxClans = 500; // Max number of clans
	private int _attackerRespawnDelay = 20000; // Time in ms. Changeable in siege.config
	private int _defenderMaxClans = 500; // Max number of clans
	private int _defenderRespawnDelay = 10000; // Time in ms. Changeable in siege.config

	// Fort Siege settings
	private FastMap<Integer, FastList<SiegeSpawn>> _commanderSpawnList;
	private FastMap<Integer, FastList<SiegeSpawn>> _flagList;

	private int _controlTowerLosePenalty = 20000; // Time in ms. Changeable in siege.config
	private int _flagMaxCount = 1; // Changeable in siege.config
	private int _siegeClanMinLevel = 4; // Changeable in siege.config
	private int _siegeLength = 120; // Time in minute. Changeable in siege.config
	private List<FortSiege> _sieges;

	// =========================================================
	// Constructor
	private FortSiegeManager()
	{}

	// =========================================================
	// Method - Public
	public final void addSiegeSkills(L2PcInstance character)
	{
		character.addSkill(SkillTable.getInstance().getInfo(246, 1), false);
		character.addSkill(SkillTable.getInstance().getInfo(247, 1), false);
	}

	/**
	 * Return true if character summon<BR>
	 * <BR>
	 * 
	 * @param activeChar The L2Character of the character can summon
	 */
	public final boolean checkIfOkToSummon(L2Character activeChar, boolean isCheckOnly)
	{
		if(activeChar == null || !(activeChar instanceof L2PcInstance))
			return false;

		SystemMessage sm = new SystemMessage(SystemMessageId.S1_S2);
		L2PcInstance player = (L2PcInstance) activeChar;
		Fort fort = FortManager.getInstance().getFort(player);

		if(fort == null || fort.getFortId() <= 0)
		{
			sm.addString("You must be on fort ground to summon this");
		}
		else if(!fort.getSiege().getIsInProgress())
		{
			sm.addString("You can only summon this during a siege.");
		}
		else if(player.getClanId() != 0 && fort.getSiege().getAttackerClan(player.getClanId()) == null)
		{
			sm.addString("You can only summon this as a registered attacker.");
		}
		else
			return true;

		if(!isCheckOnly)
		{
			player.sendPacket(sm);
		}

		sm = null;
		player = null;
		fort = null;

		return false;
	}

	/**
	 * Return true if the clan is registered or owner of a fort<BR>
	 * <BR>
	 * 
	 * @param clan The L2Clan of the player
	 */
	public final boolean checkIsRegistered(L2Clan clan, int fortid)
	{
		if(clan == null)
			return false;

		if(clan.getHasFort() > 0)
			return true;

		Connection con = null;
		boolean register = false;
		try
		{
			con = L2DatabaseFactory.getInstance().getConnection(false);
			PreparedStatement statement = con.prepareStatement("SELECT clan_id FROM fortsiege_clans where clan_id=? and fort_id=?");
			statement.setInt(1, clan.getClanId());
			statement.setInt(2, fortid);
			ResultSet rs = statement.executeQuery();

			while(rs.next())
			{
				register = true;
				break;
			}

			rs.close();
			statement.close();
			rs = null;
			statement = null;
		}
		catch(Exception e)
		{
			_log.warning("Exception: checkIsRegistered(): " + e.getMessage());
			e.printStackTrace();
		}
		finally
		{
			CloseUtil.close(con);
			con = null;
		}
		return register;
	}

	public final void removeSiegeSkills(L2PcInstance character)
	{
		character.removeSkill(SkillTable.getInstance().getInfo(246, 1));
		character.removeSkill(SkillTable.getInstance().getInfo(247, 1));
	}

	// =========================================================
	// Method - Private
	private final void load()
	{
		try
		{
			InputStream is = new FileInputStream(new File(FService.FORTSIEGE_CONFIGURATION_FILE));
			Properties siegeSettings = new Properties();
			siegeSettings.load(is);
			is.close();
			is = null;

			// Siege setting
			_attackerMaxClans = Integer.decode(siegeSettings.getProperty("AttackerMaxClans", "500"));
			_attackerRespawnDelay = Integer.decode(siegeSettings.getProperty("AttackerRespawn", "30000"));
			_controlTowerLosePenalty = Integer.decode(siegeSettings.getProperty("CTLossPenalty", "20000"));
			_defenderMaxClans = Integer.decode(siegeSettings.getProperty("DefenderMaxClans", "500"));
			_defenderRespawnDelay = Integer.decode(siegeSettings.getProperty("DefenderRespawn", "20000"));
			_flagMaxCount = Integer.decode(siegeSettings.getProperty("MaxFlags", "1"));
			_siegeClanMinLevel = Integer.decode(siegeSettings.getProperty("SiegeClanMinLevel", "4"));
			_siegeLength = Integer.decode(siegeSettings.getProperty("SiegeLength", "120"));

			// Siege spawns settings
			_commanderSpawnList = new FastMap<Integer, FastList<SiegeSpawn>>();
			_flagList = new FastMap<Integer, FastList<SiegeSpawn>>();

			for(Fort fort : FortManager.getInstance().getForts())
			{
				FastList<SiegeSpawn> _commanderSpawns = new FastList<SiegeSpawn>();
				FastList<SiegeSpawn> _flagSpawns = new FastList<SiegeSpawn>();

				for(int i = 1; i < 5; i++)
				{
					String _spawnParams = siegeSettings.getProperty(fort.getName() + "Commander" + Integer.toString(i), "");

					if(_spawnParams.length() == 0)
					{
						break;
					}

					StringTokenizer st = new StringTokenizer(_spawnParams.trim(), ",");

					try
					{
						int x = Integer.parseInt(st.nextToken());
						int y = Integer.parseInt(st.nextToken());
						int z = Integer.parseInt(st.nextToken());
						int heading = Integer.parseInt(st.nextToken());
						int npc_id = Integer.parseInt(st.nextToken());

						_commanderSpawns.add(new SiegeSpawn(fort.getFortId(), x, y, z, heading, npc_id));
					}
					catch(Exception e)
					{
						if(Config.ENABLE_ALL_EXCEPTIONS)
							e.printStackTrace();
						
						
						_log.warning("Error while loading commander(s) for " + fort.getName() + " fort.");
					}
				}

				_commanderSpawnList.put(fort.getFortId(), _commanderSpawns);

				for(int i = 1; i < 4; i++)
				{
					String _spawnParams = siegeSettings.getProperty(fort.getName() + "Flag" + Integer.toString(i), "");

					if(_spawnParams.length() == 0)
					{
						break;
					}

					StringTokenizer st = new StringTokenizer(_spawnParams.trim(), ",");

					try
					{
						int x = Integer.parseInt(st.nextToken());
						int y = Integer.parseInt(st.nextToken());
						int z = Integer.parseInt(st.nextToken());
						int flag_id = Integer.parseInt(st.nextToken());

						_flagSpawns.add(new SiegeSpawn(fort.getFortId(), x, y, z, 0, flag_id));
					}
					catch(Exception e)
					{
						if(Config.ENABLE_ALL_EXCEPTIONS)
							e.printStackTrace();
						
						
						_log.warning("Error while loading flag(s) for " + fort.getName() + " fort.");
					}
				}
				_flagList.put(fort.getFortId(), _flagSpawns);
			}

		}
		catch(Exception e)
		{
			//_initialized = false;
			System.err.println("Error while loading fortsiege data.");
			e.printStackTrace();
		}
	}

	// =========================================================
	// Property - Public
	public final FastList<SiegeSpawn> getCommanderSpawnList(int _fortId)
	{
		if(_commanderSpawnList.containsKey(_fortId))
			return _commanderSpawnList.get(_fortId);
		else
			return null;
	}

	public final FastList<SiegeSpawn> getFlagList(int _fortId)
	{
		if(_flagList.containsKey(_fortId))
			return _flagList.get(_fortId);
		else
			return null;
	}

	public final int getAttackerMaxClans()
	{
		return _attackerMaxClans;
	}

	public final int getAttackerRespawnDelay()
	{
		return _attackerRespawnDelay;
	}

	public final int getControlTowerLosePenalty()
	{
		return _controlTowerLosePenalty;
	}

	public final int getDefenderMaxClans()
	{
		return _defenderMaxClans;
	}

	public final int getDefenderRespawnDelay()
	{
		return _defenderRespawnDelay;
	}

	public final int getFlagMaxCount()
	{
		return _flagMaxCount;
	}

	public final FortSiege getSiege(L2Object activeObject)
	{
		return getSiege(activeObject.getX(), activeObject.getY(), activeObject.getZ());
	}

	public final FortSiege getSiege(int x, int y, int z)
	{
		for(Fort fort : FortManager.getInstance().getForts())
			if(fort.getSiege().checkIfInZone(x, y, z))
				return fort.getSiege();
		return null;
	}

	public final int getSiegeClanMinLevel()
	{
		return _siegeClanMinLevel;
	}

	public final int getSiegeLength()
	{
		return _siegeLength;
	}

	public final List<FortSiege> getSieges()
	{
		if(_sieges == null)
		{
			_sieges = new FastList<FortSiege>();
		}
		return _sieges;
	}

	public final void addSiege(FortSiege fortSiege)
	{
		if(_sieges == null)
		{
			_sieges = new FastList<FortSiege>();
		}
		_sieges.add(fortSiege);
	}

	public final void removeSiege(FortSiege fortSiege)
	{
		if(_sieges == null)
		{
			_sieges = new FastList<FortSiege>();
		}
		_sieges.remove(fortSiege);
	}

	public boolean isCombat(int itemId)
	{
		return itemId == 9819;
	}

	public class SiegeSpawn
	{
		Location _location;
		private int _npcId;
		private int _heading;
		private int _fortId;
		private int _hp;

		public SiegeSpawn(int fort_id, int x, int y, int z, int heading, int npc_id)
		{
			_fortId = fort_id;
			_location = new Location(x, y, z, heading);
			_heading = heading;
			_npcId = npc_id;
		}

		public SiegeSpawn(int fort_id, int x, int y, int z, int heading, int npc_id, int hp)
		{
			_fortId = fort_id;
			_location = new Location(x, y, z, heading);
			_heading = heading;
			_npcId = npc_id;
			_hp = hp;
		}

		public int getFortId()
		{
			return _fortId;
		}

		public int getNpcId()
		{
			return _npcId;
		}

		public int getHeading()
		{
			return _heading;
		}

		public int getHp()
		{
			return _hp;
		}

		public Location getLocation()
		{
			return _location;
		}
	}
	
	public final boolean checkIsRegisteredInSiege(L2Clan clan){
		
		for(Fort fort : FortManager.getInstance().getForts())
		{
			if(checkIsRegistered(clan, fort.getFortId())  && fort.getSiege()!=null && fort.getSiege().getIsInProgress())
			{
				return true;
			}
		}

		return false;
		
	}
}
