/*
 * Copyright (c) 2013 L2jMobius
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
 * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package handlers.effecthandlers;

import java.util.logging.Level;

import org.l2jmobius.commons.util.Rnd;
import org.l2jmobius.gameserver.data.xml.SkillData;
import org.l2jmobius.gameserver.handler.ITargetTypeHandler;
import org.l2jmobius.gameserver.handler.TargetHandler;
import org.l2jmobius.gameserver.model.StatSet;
import org.l2jmobius.gameserver.model.WorldObject;
import org.l2jmobius.gameserver.model.actor.Creature;
import org.l2jmobius.gameserver.model.effects.AbstractEffect;
import org.l2jmobius.gameserver.model.events.EventType;
import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureAttackPerfection;
import org.l2jmobius.gameserver.model.events.listeners.ConsumerEventListener;
import org.l2jmobius.gameserver.model.holders.SkillHolder;
import org.l2jmobius.gameserver.model.item.instance.Item;
import org.l2jmobius.gameserver.model.skill.BuffInfo;
import org.l2jmobius.gameserver.model.skill.Skill;
import org.l2jmobius.gameserver.model.skill.SkillCaster;
import org.l2jmobius.gameserver.model.skill.targets.TargetType;

/**
 * Trigger Skill By Perfection effect implementation.
 * @author Atronic
 */
public class TriggerSkillByPerfection extends AbstractEffect
{
	private final int _chance;
	private final SkillHolder _skill;
	private final TargetType _targetType;
	private final int _skillLevelScaleTo;
	private final int _castSkillId;
	
	public TriggerSkillByPerfection(StatSet params)
	{
		_chance = params.getInt("chance", 100);
		_skill = new SkillHolder(params.getInt("skillId", 0), params.getInt("skillLevel", 0));
		_targetType = params.getEnum("targetType", TargetType.class, TargetType.TARGET);
		_skillLevelScaleTo = params.getInt("skillLevelScaleTo", 0);
		_castSkillId = params.getInt("castSkillId", 0);
	}
	
	@Override
	public void onExit(Creature effector, Creature effected, Skill skill)
	{
		effected.removeListenerIf(EventType.ON_CREATURE_ATTACK_PERFECTION, listener -> listener.getOwner() == this);
	}
	
	@Override
	public void onStart(Creature effector, Creature effected, Skill skill, Item item)
	{
		effected.addListener(new ConsumerEventListener(effected, EventType.ON_CREATURE_ATTACK_PERFECTION, (OnCreatureAttackPerfection event) -> onPerfectionEvent(event), this));
	}
	
	private void onPerfectionEvent(OnCreatureAttackPerfection event)
	{
		if ((_chance == 0) || ((_skill.getSkillId() == 0) || (_skill.getSkillLevel() == 0)))
		{
			return;
		}
		
		if ((_castSkillId != 0) && (_castSkillId != event.getSkill().getId()))
		{
			return;
		}
		
		final ITargetTypeHandler targetHandler = TargetHandler.getInstance().getHandler(_targetType);
		if (targetHandler == null)
		{
			LOGGER.warning("Handler for target type: " + _targetType + " does not exist.");
			return;
		}
		
		if ((_chance < 100) && (Rnd.get(100) > _chance))
		{
			return;
		}
		
		Skill triggerSkill = _skill.getSkill();
		WorldObject target = null;
		try
		{
			target = TargetHandler.getInstance().getHandler(_targetType).getTarget(event.getAttacker(), event.getTarget(), triggerSkill, false, false, false);
		}
		catch (Exception e)
		{
			LOGGER.log(Level.WARNING, "Exception in ITargetTypeHandler.getTarget(): " + e.getMessage(), e);
		}
		
		if ((target == null) || !target.isCreature())
		{
			return;
		}
		
		if (_skillLevelScaleTo > 0)
		{
			final BuffInfo buffInfo = target.asCreature().getEffectList().getBuffInfoBySkillId(triggerSkill.getId());
			if (buffInfo != null)
			{
				triggerSkill = SkillData.getInstance().getSkill(triggerSkill.getId(), Math.min(_skillLevelScaleTo, buffInfo.getSkill().getLevel() + 1));
			}
		}
		SkillCaster.triggerCast(event.getAttacker(), target.asCreature(), triggerSkill);
	}
}
