/* 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
 */
package com.l2dot.gameserver.instancemanager;

import java.util.logging.Logger;

import com.l2dot.gameserver.model.L2Effect;
import com.l2dot.gameserver.model.actor.instance.L2PcInstance;
import com.l2dot.gameserver.model.entity.Duel;
import com.l2dot.gameserver.network.serverpackets.L2GameServerPacket;

import javolution.util.FastList;

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

	// =========================================================
	private static DuelManager _instance;

	public static final DuelManager getInstance()
	{
		if (_instance == null)
		{
			_instance = new DuelManager();
		}
		return _instance;
	}

	// =========================================================
	// Data Field
	private FastList<Duel> _duels;
	private int _currentDuelId = 0x90;

	// =========================================================
	// Constructor
	private DuelManager()
	{
		_log.info("Initializing DuelManager");
		_duels = new FastList<Duel>();
	}

	// =========================================================
	// Method - Private

	private int getNextDuelId()
	{
		_currentDuelId++;
		// In case someone wants to run the server forever :)
		if (_currentDuelId >= 2147483640) _currentDuelId = 1;
		return _currentDuelId;
	}

	private Duel getDuel(int duelId)
	{
		for (FastList.Node<Duel> e = _duels.head(), end = _duels.tail(); (e = e.getNext()) != end;)
		{
			if (e.getValue().getId() == duelId) return e.getValue();
		}
		return null;
	}

	// =========================================================
	// Method - Public

	public void addDuel(L2PcInstance playerA, L2PcInstance playerB, int partyDuel)
	{
		if (playerA == null || playerB == null) return;

		// return if a player has PvPFlag
		String engagedInPvP = "The duel was canceled because a duelist engaged in PvP combat.";
		if (partyDuel == 1)
		{
			boolean playerInPvP = false;
			for (L2PcInstance temp : playerA.getParty().getPartyMembers())
			{
				if (temp.getPvpFlag() != 0) { playerInPvP = true; break; }
			}
			if (!playerInPvP)
			{
				for (L2PcInstance temp : playerB.getParty().getPartyMembers())
				{
					if (temp.getPvpFlag() != 0) { playerInPvP = true; break; }
				}
			}
			// A player has PvP flag
			if (playerInPvP)
			{
				for (L2PcInstance temp : playerA.getParty().getPartyMembers())
				{
					temp.sendMessage(engagedInPvP);
				}
				for (L2PcInstance temp : playerB.getParty().getPartyMembers())
				{
					temp.sendMessage(engagedInPvP);
				}
				return;
			}
		}
		else
		{
			if (playerA.getPvpFlag() != 0 || playerB.getPvpFlag() != 0)
			{
				playerA.sendMessage(engagedInPvP);
				playerB.sendMessage(engagedInPvP);
				return;
			}
		}

		Duel duel = new Duel(playerA, playerB, partyDuel, getNextDuelId());
		_duels.add(duel);
	}

	public void removeDuel(Duel duel)
	{
		_duels.remove(duel);
	}

	public void doSurrender(L2PcInstance player)
	{
		if (player == null || !player.isInDuel()) return;
		Duel duel = getDuel(player.getDuelId());
		duel.doSurrender(player);
	}

	/**
	 * Updates player states.
	 * @param player - the dieing player
	 */
	public void onPlayerDefeat(L2PcInstance player)
	{
		if (player == null || !player.isInDuel()) return;
		Duel duel = getDuel(player.getDuelId());
		if (duel != null) duel.onPlayerDefeat(player);
	}

	/**
	 * Registers a debuff which will be removed if the duel ends
	 * @param player
	 * @param debuff
	 */
	public void onBuff(L2PcInstance player, L2Effect buff)
	{
		if (player == null || !player.isInDuel() || buff == null) return;
		Duel duel = getDuel(player.getDuelId());
		if (duel != null) duel.onBuff(player, buff);
	}

	/**
	 * Removes player from duel.
	 * @param player - the removed player
	 */
	public void onRemoveFromParty(L2PcInstance player)
	{
		if (player == null || !player.isInDuel()) return;
		Duel duel = getDuel(player.getDuelId());
		if (duel != null) duel.onRemoveFromParty(player);
	}

	/**
	 * Broadcasts a packet to the team opposing the given player.
	 * @param player
	 * @param packet
	 */
	public void broadcastToOppositTeam(L2PcInstance player, L2GameServerPacket packet)
	{
		if (player == null || !player.isInDuel()) return;
		Duel duel = getDuel(player.getDuelId());
		if (duel == null) return;
		if (duel.getPlayerA() == null || duel.getPlayerB() == null) return;

		if (duel.getPlayerA() == player)
		{
			duel.broadcastToTeam2(packet);
		}
		else if (duel.getPlayerB() == player)
		{
			duel.broadcastToTeam1(packet);
		}
		else if (duel.isPartyDuel())
		{
			if (duel.getPlayerA().getParty() != null &&
					duel.getPlayerA().getParty().getPartyMembers().contains(player))
			{
				duel.broadcastToTeam2(packet);
			}
			else if (duel.getPlayerB().getParty() != null &&
					duel.getPlayerB().getParty().getPartyMembers().contains(player))
			{
				duel.broadcastToTeam1(packet);
			}
		}
	}
}