/*
 * 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 silentium.gameserver.data.xml;

import gnu.trove.map.hash.TIntIntHashMap;

import java.io.File;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

import silentium.gameserver.configs.MainConfig;
import silentium.gameserver.configs.PlayersConfig;
import silentium.gameserver.data.xml.parsers.XMLDocumentFactory;
import silentium.gameserver.model.L2Skill;

public class SpellbookData
{
	private static Logger _log = LoggerFactory.getLogger(SkillTreeData.class.getName());

	private static TIntIntHashMap _skillSpellbooks;

	public static SpellbookData getInstance()
	{
		return SingletonHolder._instance;
	}

	protected SpellbookData()
	{
		_skillSpellbooks = new TIntIntHashMap();

		try
		{
			File f = new File(MainConfig.DATAPACK_ROOT + "/data/xml/spellbooks.xml");
			Document doc = XMLDocumentFactory.getInstance().loadDocument(f);

			for (Node list = doc.getFirstChild().getFirstChild(); list != null; list = list.getNextSibling())
			{
				if (list.getNodeName().equalsIgnoreCase("book"))
				{
					NamedNodeMap bookAttrs = list.getAttributes();
					_skillSpellbooks.put(Integer.valueOf(bookAttrs.getNamedItem("skill_id").getNodeValue()), Integer.valueOf(bookAttrs.getNamedItem("item_id").getNodeValue()));
				}
			}
		}
		catch (Exception e)
		{
			_log.warn("Error while loading spellbook data: " + e.getMessage(), e);
		}

		_log.info("SpellbookData: Loaded " + _skillSpellbooks.size() + " spellbooks.");
	}

	public int getBookForSkill(int skillId, int level)
	{
		if (skillId == L2Skill.SKILL_DIVINE_INSPIRATION)
		{
			if (!PlayersConfig.DIVINE_SP_BOOK_NEEDED)
				return 0;

			switch (level)
			{
				case 1:
					return 8618; // Ancient Book - Divine Inspiration (Modern Language Version)
				case 2:
					return 8619; // Ancient Book - Divine Inspiration (Original Language Version)
				case 3:
					return 8620; // Ancient Book - Divine Inspiration (Manuscript)
				case 4:
					return 8621; // Ancient Book - Divine Inspiration (Original Version)
				default:
					return 0;
			}
		}

		if (level != 1)
			return 0;

		if (!PlayersConfig.SP_BOOK_NEEDED)
			return 0;

		if (!_skillSpellbooks.containsKey(skillId))
			return 0;

		return _skillSpellbooks.get(skillId);
	}

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