/*
 * Copyright (C) 2004-2015 L2J DataPack
 * 
 * This file is part of L2J DataPack.
 * 
 * L2J DataPack 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 DataPack 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 handlers.effecthandlers;

import com.l2jserver.gameserver.handler.ITargetTypeHandler;
import com.l2jserver.gameserver.handler.TargetHandler;
import com.l2jserver.gameserver.model.L2Object;
import com.l2jserver.gameserver.model.StatsSet;
import com.l2jserver.gameserver.model.actor.L2Character;
import com.l2jserver.gameserver.model.conditions.Condition;
import com.l2jserver.gameserver.model.effects.AbstractEffect;
import com.l2jserver.gameserver.model.events.EventType;
import com.l2jserver.gameserver.model.events.impl.character.OnCreatureAttackAvoid;
import com.l2jserver.gameserver.model.events.listeners.ConsumerEventListener;
import com.l2jserver.gameserver.model.holders.SkillHolder;
import com.l2jserver.gameserver.model.skills.BuffInfo;
import com.l2jserver.gameserver.model.skills.Skill;
import com.l2jserver.gameserver.model.skills.targets.L2TargetType;
import com.l2jserver.util.Rnd;

/**
 * Trigger Skill By Avoid effect implementation.
 * @author Zealar
 */
public final class TriggerSkillByAvoid extends AbstractEffect
{
	private final int _chance;
	private final SkillHolder _skill;
	private final L2TargetType _targetType;
	
	/**
	 * @param attachCond
	 * @param applyCond
	 * @param set
	 * @param params
	 */
	
	public TriggerSkillByAvoid(Condition attachCond, Condition applyCond, StatsSet set, StatsSet params)
	{
		super(attachCond, applyCond, set, params);
		
		_chance = params.getInt("chance", 100);
		_skill = new SkillHolder(params.getInt("skillId", 0), params.getInt("skillLevel", 0));
		_targetType = params.getEnum("targetType", L2TargetType.class, L2TargetType.ONE);
	}
	
	public void onAvoidEvent(OnCreatureAttackAvoid event)
	{
		if (event.isDamageOverTime() || (_chance == 0) || ((_skill.getSkillId() == 0) || (_skill.getSkillLvl() == 0)))
		{
			return;
		}
		
		final ITargetTypeHandler targetHandler = TargetHandler.getInstance().getHandler(_targetType);
		if (targetHandler == null)
		{
			_log.warning("Handler for target type: " + _targetType + " does not exist.");
			return;
		}
		
		if (Rnd.get(100) > _chance)
		{
			return;
		}
		
		final Skill triggerSkill = _skill.getSkill();
		final L2Object[] targets = targetHandler.getTargetList(triggerSkill, event.getTarget(), false, event.getAttacker());
		
		for (L2Object triggerTarget : targets)
		{
			if ((triggerTarget == null) || !triggerTarget.isCharacter())
			{
				continue;
			}
			
			final L2Character targetChar = (L2Character) triggerTarget;
			if (!targetChar.isInvul())
			{
				event.getTarget().makeTriggerCast(triggerSkill, targetChar);
			}
		}
	}
	
	@Override
	public void onExit(BuffInfo info)
	{
		info.getEffected().removeListenerIf(EventType.ON_CREATURE_ATTACK_AVOID, listener -> listener.getOwner() == this);
	}
	
	@Override
	public void onStart(BuffInfo info)
	{
		info.getEffected().addListener(new ConsumerEventListener(info.getEffected(), EventType.ON_CREATURE_ATTACK_AVOID, (OnCreatureAttackAvoid event) -> onAvoidEvent(event), this));
	}
}