/*
 * Copyright (C) 2004-2015 L2J Server
 * 
 * This file is part of L2J Server.
 * 
 * L2J Server 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.
 * 
 * L2J Server 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.model;

import java.util.ArrayList;
import java.util.List;

import com.l2jserver.Config;
import com.l2jserver.gameserver.enums.Race;
import com.l2jserver.gameserver.model.base.ClassId;
import com.l2jserver.gameserver.model.base.SocialClass;
import com.l2jserver.gameserver.model.holders.ItemHolder;
import com.l2jserver.gameserver.model.holders.SkillHolder;

/**
 * @author Zoey76
 */
public final class L2SkillLearn
{
	private final String _skillName;
	private final int _skillId;
	private final int _skillLvl;
	private final int _getLevel;
	private final boolean _autoGet;
	private final int _levelUpSp;
	private final List<ItemHolder> _requiredItems = new ArrayList<>();
	private final List<Race> _races = new ArrayList<>();
	private final List<SkillHolder> _preReqSkills = new ArrayList<>();
	private SocialClass _socialClass;
	private final boolean _residenceSkill;
	private final List<Integer> _residenceIds = new ArrayList<>();
	private final List<SubClassData> _subClassLvlNumber = new ArrayList<>();
	private final boolean _learnedByNpc;
	private final boolean _learnedByFS;
	
	public class SubClassData
	{
		private final int slot;
		private final int lvl;
		
		public SubClassData(int pSlot, int pLvl)
		{
			slot = pSlot;
			lvl = pLvl;
		}
		
		/**
		 * @return the sub-class slot.
		 */
		public int getSlot()
		{
			return slot;
		}
		
		/**
		 * @return the required sub-class level.
		 */
		public int getLvl()
		{
			return lvl;
		}
	}
	
	/**
	 * Constructor for L2SkillLearn.
	 * @param set the set with the L2SkillLearn data.
	 */
	public L2SkillLearn(StatsSet set)
	{
		_skillName = set.getString("skillName");
		_skillId = set.getInt("skillId");
		_skillLvl = set.getInt("skillLvl");
		_getLevel = set.getInt("getLevel");
		_autoGet = set.getBoolean("autoGet", false);
		_levelUpSp = set.getInt("levelUpSp", 0);
		_residenceSkill = set.getBoolean("residenceSkill", false);
		_learnedByNpc = set.getBoolean("learnedByNpc", false);
		_learnedByFS = set.getBoolean("learnedByFS", false);
	}
	
	/**
	 * @return the name of this skill.
	 */
	public String getName()
	{
		return _skillName;
	}
	
	/**
	 * @return the ID of this skill.
	 */
	public int getSkillId()
	{
		return _skillId;
	}
	
	/**
	 * @return the level of this skill.
	 */
	public int getSkillLevel()
	{
		return _skillLvl;
	}
	
	/**
	 * @return the minimum level required to acquire this skill.
	 */
	public int getGetLevel()
	{
		return _getLevel;
	}
	
	/**
	 * @return the amount of SP/Clan Reputation to acquire this skill.
	 */
	public int getLevelUpSp()
	{
		return _levelUpSp;
	}
	
	/**
	 * @return {@code true} if the skill is auto-get, this skill is automatically delivered.
	 */
	public boolean isAutoGet()
	{
		return _autoGet;
	}
	
	/**
	 * @return the list with the item holders required to acquire this skill.
	 */
	public List<ItemHolder> getRequiredItems()
	{
		return _requiredItems;
	}
	
	/**
	 * Adds a required item holder to learn this skill.
	 * @param item the required item holder.
	 */
	public void addRequiredItem(ItemHolder item)
	{
		_requiredItems.add(item);
	}
	
	/**
	 * @return a list with the races that can acquire this skill.
	 */
	public List<Race> getRaces()
	{
		return _races;
	}
	
	/**
	 * Adds a required race to learn this skill.
	 * @param race the required race.
	 */
	public void addRace(Race race)
	{
		_races.add(race);
	}
	
	/**
	 * @return the list of skill holders required to acquire this skill.
	 */
	public List<SkillHolder> getPreReqSkills()
	{
		return _preReqSkills;
	}
	
	/**
	 * Adds a required skill holder to learn this skill.
	 * @param skill the required skill holder.
	 */
	public void addPreReqSkill(SkillHolder skill)
	{
		_preReqSkills.add(skill);
	}
	
	/**
	 * @return the social class required to get this skill.
	 */
	public SocialClass getSocialClass()
	{
		return _socialClass;
	}
	
	/**
	 * Sets the social class if hasn't been set before.
	 * @param socialClass the social class to set.
	 */
	public void setSocialClass(SocialClass socialClass)
	{
		if (_socialClass == null)
		{
			_socialClass = socialClass;
		}
	}
	
	/**
	 * @return {@code true} if this skill is a Residence skill.
	 */
	public boolean isResidencialSkill()
	{
		return _residenceSkill;
	}
	
	/**
	 * @return a list with the Ids where this skill is available.
	 */
	public List<Integer> getResidenceIds()
	{
		return _residenceIds;
	}
	
	/**
	 * Adds a required residence Id.
	 * @param id the residence Id to add.
	 */
	public void addResidenceId(Integer id)
	{
		_residenceIds.add(id);
	}
	
	/**
	 * @return a list with Sub-Class conditions, amount of subclasses and level.
	 */
	public List<SubClassData> getSubClassConditions()
	{
		return _subClassLvlNumber;
	}
	
	/**
	 * Adds a required residence Id.
	 * @param slot the sub-class slot.
	 * @param lvl the required sub-class level.
	 */
	public void addSubclassConditions(int slot, int lvl)
	{
		_subClassLvlNumber.add(new SubClassData(slot, lvl));
	}
	
	/**
	 * @return {@code true} if this skill is learned from Npc.
	 */
	public boolean isLearnedByNpc()
	{
		return _learnedByNpc;
	}
	
	/**
	 * @return {@code true} if this skill is learned by Forgotten Scroll.
	 */
	public boolean isLearnedByFS()
	{
		return _learnedByFS;
	}
	
	/**
	 * Used for AltGameSkillLearn mod.<br>
	 * If the alternative skill learn system is enabled and the player is learning a skill from a different class apply a fee.<br>
	 * If the player is learning a skill from other class type (mage learning warrior skills or vice versa) the fee is higher.
	 * @param playerClass the player class Id.
	 * @param learningClass the skill learning player class Id.
	 * @return the amount of SP required to acquire this skill, by calculating the cost for the alternative skill learn system.
	 */
	public int getCalculatedLevelUpSp(ClassId playerClass, ClassId learningClass)
	{
		if ((playerClass == null) || (learningClass == null))
		{
			return _levelUpSp;
		}
		
		int levelUpSp = _levelUpSp;
		// If the alternative skill learn system is enabled and the player is learning a skill from a different class apply a fee.
		if (Config.ALT_GAME_SKILL_LEARN && (playerClass != learningClass))
		{
			// If the player is learning a skill from other class type (mage learning warrior skills or vice versa) the fee is higher.
			if (playerClass.isMage() != learningClass.isMage())
			{
				levelUpSp *= 3;
			}
			else
			{
				levelUpSp *= 2;
			}
		}
		return levelUpSp;
	}
}