/*
* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
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*    1. Redistributions of source code must retain the above copyright notice, this list of
*       conditions and the following disclaimer.
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*    2. Redistributions in binary form must reproduce the above copyright notice, this list
*       of conditions and the following disclaimer in the documentation and/or other materials
*       provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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package mage.abilities.effects.common;

import mage.Constants.Duration;
import mage.Constants.Outcome;
import mage.Constants.PhaseStep;
import mage.abilities.Ability;
import mage.abilities.Mode;
import mage.abilities.effects.ReplacementEffectImpl;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;

import java.util.HashSet;
import java.util.Set;
import java.util.UUID;

/**
 * @author BetaSteward_at_googlemail.com
 */
public class SkipNextUntapTargetEffect extends ReplacementEffectImpl<SkipNextUntapTargetEffect> {

	protected Set<UUID> usedFor = new HashSet<UUID>();
	protected int count;

	public SkipNextUntapTargetEffect() {
		super(Duration.OneUse, Outcome.Detriment);
	}

	public SkipNextUntapTargetEffect(final SkipNextUntapTargetEffect effect) {
		super(effect);
		for (UUID uuid : effect.usedFor) {
			this.usedFor.add(uuid);
		}
		this.count = effect.count;
	}

	@Override
	public SkipNextUntapTargetEffect copy() {
		return new SkipNextUntapTargetEffect(this);
	}

	@Override
	public boolean apply(Game game, Ability source) {
		return false;
	}

	@Override
	public boolean replaceEvent(GameEvent event, Ability source, Game game) {
		if (source.getTargets().get(0).getTargets().size() < 2) {
			used = true;
		} else {
			count++;
		}
		// not clear how to turn off the effect for more than one target
		// especially as some targets may leave the battlefield since the effect creation
		// so handling this in applies method is the only option for now for such cases
		if (count == source.getTargets().get(0).getTargets().size()) {
			// this won't work for targets disappeared before applies() return true
			used = true;
		}
		return true;
	}

	@Override
	public boolean applies(GameEvent event, Ability source, Game game) {
		if (game.getTurn().getStepType() == PhaseStep.UNTAP &&
				event.getType() == EventType.UNTAP) {

			for (UUID target : source.getTargets().get(0).getTargets()) {
				if (event.getTargetId().equals(target)) {
					if (!usedFor.contains(target)) {
						usedFor.add(target);
						return true;
					}
					break;
				}
			}

			return false;
		}
		return false;
	}

	@Override
	public String getText(Mode mode) {
		return "Target " + mode.getTargets().get(0).getTargetName() + " doesn't untap during its controller's next untap step";
	}

}