/*
 * Copyright © 2004-2021 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.stats.functions.formulas;

import java.util.HashMap;
import java.util.Map;

import com.l2jserver.gameserver.data.xml.impl.ArmorSetsData;
import com.l2jserver.gameserver.model.L2ArmorSet;
import com.l2jserver.gameserver.model.actor.L2Character;
import com.l2jserver.gameserver.model.actor.instance.L2PcInstance;
import com.l2jserver.gameserver.model.items.instance.L2ItemInstance;
import com.l2jserver.gameserver.model.skills.Skill;
import com.l2jserver.gameserver.model.stats.Stats;
import com.l2jserver.gameserver.model.stats.functions.AbstractFunction;

/**
 * @author UnAfraid
 */
public class FuncArmorSet extends AbstractFunction {
	private static final Map<Stats, FuncArmorSet> _fh_instance = new HashMap<>();
	
	public static AbstractFunction getInstance(Stats st) {
		if (!_fh_instance.containsKey(st)) {
			_fh_instance.put(st, new FuncArmorSet(st));
		}
		return _fh_instance.get(st);
	}
	
	private FuncArmorSet(Stats stat) {
		super(stat, 1, null, 0, null);
	}
	
	@Override
	public double calc(L2Character effector, L2Character effected, Skill skill, double initVal) {
		double value = initVal;
		L2PcInstance player = effector.getActingPlayer();
		if (player != null) {
			L2ItemInstance chest = player.getChestArmorInstance();
			if (chest != null) {
				L2ArmorSet set = ArmorSetsData.getInstance().getSet(chest.getId());
				if ((set != null) && set.containAll(player)) {
					switch (getStat()) {
						case STAT_STR -> value += set.getSTR();
						case STAT_DEX -> value += set.getDEX();
						case STAT_INT -> value += set.getINT();
						case STAT_MEN -> value += set.getMEN();
						case STAT_CON -> value += set.getCON();
						case STAT_WIT -> value += set.getWIT();
					}
				}
			}
		}
		return value;
	}
}