/*
 * 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.l2jserver.gameserver.instancemanager;

import java.util.Calendar;
import java.util.logging.Logger;

import com.l2jserver.Config;
import com.l2jserver.gameserver.ThreadPoolManager;
import com.l2jserver.gameserver.model.quest.Quest;

public class GraciaSeedsManager
{
	protected static final Logger _log = Logger.getLogger(GraciaSeedsManager.class.getName());

	public static String qn = "EnergySeeds";
	
	private static final byte SOITYPE = 2;
	private static final byte SOATYPE = 3;
	
	// Seed of Destruction
	private static final byte SODTYPE = 1;
	private int _SoDTiatKilled = 0;
	private int _SoDState = 1;
	private Calendar _SoDLastStateChangeDate;

	protected GraciaSeedsManager()
	{
		_log.info(getClass().getSimpleName()+": Initializing");
		_SoDLastStateChangeDate = Calendar.getInstance();
		loadData();
		handleSodStages();
	}

	public void saveData(byte seedType)
	{
		switch(seedType)
		{
			case SODTYPE:
				// Seed of Destruction
				GlobalVariablesManager.getInstance().storeVariable("SoDState", String.valueOf(_SoDState));
				GlobalVariablesManager.getInstance().storeVariable("SoDTiatKilled", String.valueOf(_SoDTiatKilled));
				GlobalVariablesManager.getInstance().storeVariable("SoDLSCDate", String.valueOf(_SoDLastStateChangeDate.getTimeInMillis()));
				break;
			case SOITYPE:
				// Seed of Infinity
				break;
			case SOATYPE:
				// Seed of Annihilation
				break;
			default:
				_log.warning("GraciaSeedManager: Unknown SeedType in SaveData: " + seedType);
				break;
		}
	}
	
	public void loadData()
	{
		// Seed of Destruction variables
		if (GlobalVariablesManager.getInstance().isVariableStored("SoDState"))
		{
			_SoDState = Integer.parseInt(GlobalVariablesManager.getInstance().getStoredVariable("SoDState"));
			_SoDTiatKilled = Integer.parseInt(GlobalVariablesManager.getInstance().getStoredVariable("SoDTiatKilled"));
			_SoDLastStateChangeDate.setTimeInMillis(Long.parseLong(GlobalVariablesManager.getInstance().getStoredVariable("SoDLSCDate")));
		}
		else
		{
			// save Initial values
			saveData(SODTYPE);
		}
	}

	private void handleSodStages()
	{
		switch(_SoDState)
		{
			case 1:
				// do nothing, players should kill Tiat a few times
				break;
			case 2:
				// Conquest Complete state, if too much time is passed than change to defense state
				long timePast = System.currentTimeMillis() - _SoDLastStateChangeDate.getTimeInMillis();
				if (timePast >= Config.SOD_STAGE_2_LENGTH)
					// change to Attack state because Defend statet is not implemented
					setSoDState(1, true);
				else
					ThreadPoolManager.getInstance().scheduleEffect(new Runnable(){
						@Override
						public void run()
						{
							setSoDState(1, true);
							Quest esQuest = QuestManager.getInstance().getQuest(qn);
							if (esQuest == null)
								_log.warning("GraciaSeedManager: missing EnergySeeds Quest!");
							else
								esQuest.notifyEvent("StopSoDAi", null, null);
						}}, Config.SOD_STAGE_2_LENGTH - timePast);
				break;
			case 3:
				// not implemented
				setSoDState(1, true);
				break;
			default:
				_log.warning("GraciaSeedManager: Unknown Seed of Destruction state(" + _SoDState + ")! ");
		}
	}

	public void increaseSoDTiatKilled()
	{
		if (_SoDState == 1)
		{
			_SoDTiatKilled++;
			if (_SoDTiatKilled >= Config.SOD_TIAT_KILL_COUNT)
				setSoDState(2, false);
			saveData(SODTYPE);
			Quest esQuest = QuestManager.getInstance().getQuest(qn);
			if (esQuest == null)
				_log.warning("GraciaSeedManager: missing EnergySeeds Quest!");
			else
				esQuest.notifyEvent("StartSoDAi", null, null);
		}
	}
	
	public int getSoDTiatKilled()
	{
		return _SoDTiatKilled;
	}
	
	public void setSoDState(int value, boolean doSave)
	{
		_log.info("GraciaSeedManager: New Seed of Destruction state -> " + value + ".");
		_SoDLastStateChangeDate.setTimeInMillis(System.currentTimeMillis());
		_SoDState = value;
		// reset number of Tiat kills
		if (_SoDState == 1)
			_SoDTiatKilled = 0;
		
		handleSodStages();
		
		if (doSave)
			saveData(SODTYPE);
	}
	
	public long getSoDTimeForNextStateChange()
	{
		switch(_SoDState)
		{
			case 1:
				return -1;
			case 2:
				return (_SoDLastStateChangeDate.getTimeInMillis() + Config.SOD_STAGE_2_LENGTH - System.currentTimeMillis());
			case 3:
				// not implemented yet
				return -1;
			default:
				// this should not happen!
				return -1;
		}
	}
	
	public Calendar getSoDLastStateChangeDate()
	{
		return _SoDLastStateChangeDate;
	}
	
	public int getSoDState()
	{
		return _SoDState;
	}
	
	public static final GraciaSeedsManager getInstance()
	{
		return SingletonHolder._instance;
	}

	private static class SingletonHolder
	{
		protected static final GraciaSeedsManager _instance = new GraciaSeedsManager();
	}
}