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 *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
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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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 *        of conditions and the following disclaimer in the documentation and/or other materials
 *        provided with the distribution.
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package mage.sets.scarsofmirrodin;

import mage.Constants;
import mage.Constants.CardType;
import mage.Constants.Rarity;
import mage.abilities.Ability;
import mage.abilities.effects.common.CounterTargetEffect;
import mage.cards.CardImpl;
import mage.filter.Filter;
import mage.filter.FilterSpell;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.game.stack.Spell;
import mage.game.stack.StackObject;
import mage.target.TargetObject;

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

/**
 * @author ayratn
 */
public class TurnAside extends CardImpl<TurnAside> {

	private static FilterSpell filter = new FilterSpell("spell that targets a permanent you control");

	public TurnAside(UUID ownerId) {
		super(ownerId, 49, "Turn Aside", Rarity.COMMON, new CardType[]{CardType.INSTANT}, "{U}");
		this.expansionSetCode = "SOM";
		this.color.setBlue(true);
		this.getSpellAbility().addEffect(new CounterTargetEffect());
		this.getSpellAbility().addTarget(new CustomTargetSpell(filter));
	}

	public TurnAside(final TurnAside card) {
		super(card);
	}

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

	private class CustomTargetSpell extends TargetObject<CustomTargetSpell> {

		protected FilterSpell filter;

		public CustomTargetSpell() {
			this(1, 1, new FilterSpell());
		}

		public CustomTargetSpell(FilterSpell filter) {
			this(1, 1, filter);
		}

		public CustomTargetSpell(int numTargets, FilterSpell filter) {
			this(numTargets, numTargets, filter);
		}

		public CustomTargetSpell(int minNumTargets, int maxNumTargets, FilterSpell filter) {
			this.minNumberOfTargets = minNumTargets;
			this.maxNumberOfTargets = maxNumTargets;
			this.zone = Constants.Zone.STACK;
			this.filter = filter;
			this.targetName = filter.getMessage();
		}

		public CustomTargetSpell(final CustomTargetSpell target) {
			super(target);
			this.filter = target.filter.copy();
		}

		@Override
		public boolean canChoose(UUID sourceId, UUID sourceControllerId, Game game) {
			return canChoose(sourceControllerId, game);
		}

		@Override
		public Set<UUID> possibleTargets(UUID sourceId, UUID sourceControllerId, Game game) {
			return possibleTargets(sourceControllerId, game);
		}

		@Override
		public boolean canTarget(UUID id, Ability source, Game game) {
			if (super.canTarget(id, source, game)) {
				if (targetsMyPermanent(id, source.getControllerId(), game)) {
					return true;
				}
			}
			return false;
		}

		@Override
		public boolean canChoose(UUID sourceControllerId, Game game) {
			int count = 0;
			for (StackObject stackObject : game.getStack()) {
				if (stackObject instanceof Spell && game.getPlayer(sourceControllerId).getInRange().contains(stackObject.getControllerId()) && filter.match((Spell) stackObject)) {
					if (targetsMyPermanent(stackObject.getId(), sourceControllerId, game)) {
						count++;
						if (count >= this.minNumberOfTargets)
							return true;
					}
				}
			}
			return false;
		}

		@Override
		public Set<UUID> possibleTargets(UUID sourceControllerId, Game game) {
			Set<UUID> possibleTargets = new HashSet<UUID>();
			for (StackObject stackObject : game.getStack()) {
				if (stackObject instanceof Spell && game.getPlayer(sourceControllerId).getInRange().contains(stackObject.getControllerId()) && filter.match((Spell) stackObject)) {
					if (targetsMyPermanent(stackObject.getId(), sourceControllerId, game)) {

						possibleTargets.add(stackObject.getId());
					}
				}
			}
			return possibleTargets;
		}

		@Override
		public Filter getFilter() {
			return filter;
		}

		private boolean targetsMyPermanent(UUID id, UUID controllerId, Game game) {
			StackObject spell = game.getStack().getStackObject(id);
			if (spell != null) {
				Ability ability = spell.getStackAbility();
				for (UUID permanentId : ability.getTargets().get(0).getTargets()) {
					Permanent permanent = game.getPermanent(permanentId);
					if (permanent != null && permanent.getControllerId().equals(controllerId)) {
						return true;
					}
				}
			}
			return false;
		}

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