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package mage.cards.a;

import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.common.BeginningOfEndStepTriggeredAbility;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.keyword.FlyingAbility;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.TargetController;
import mage.filter.common.FilterControlledCreaturePermanent;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.common.TargetControlledPermanent;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

/**
 *
 * @author LevelX2
 */
public class ArchfiendOfDepravity extends CardImpl {

    public ArchfiendOfDepravity(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{3}{B}{B}");
        this.subtype.add("Demon");
        this.power = new MageInt(5);
        this.toughness = new MageInt(4);

        // Flying
        this.addAbility(FlyingAbility.getInstance());

        // At the beginning of each opponent's end step, that player chooses up to two creatures he or she controls, then sacrifices the rest.
        this.addAbility(new BeginningOfEndStepTriggeredAbility(new ArchfiendOfDepravityEffect(), TargetController.OPPONENT, false));
    }

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

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

class ArchfiendOfDepravityEffect extends OneShotEffect {

    public ArchfiendOfDepravityEffect() {
        super(Outcome.Benefit); // AI should select two creatures if possible so it has to be a benefit
        this.staticText = "that player chooses up to two creatures he or she controls, then sacrifices the rest";
    }

    public ArchfiendOfDepravityEffect(final ArchfiendOfDepravityEffect effect) {
        super(effect);
    }

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player opponent = game.getPlayer(getTargetPointer().getFirst(game, source));
        if (opponent != null) {
            List<Permanent> creaturesToSacrifice = new ArrayList<>();
            TargetControlledPermanent target = new TargetControlledPermanent(0, 2, new FilterControlledCreaturePermanent("creatures to keep"), true);
            if (opponent.chooseTarget(outcome, target, source, game)) {
                for (Permanent permanent : game.getBattlefield().getActivePermanents(new FilterControlledCreaturePermanent(), opponent.getId(), source.getSourceId(), game)) {
                    if (permanent != null && !target.getTargets().contains(permanent.getId())) {
                        creaturesToSacrifice.add(permanent);
                    }
                }
            }
            for (Permanent creature : creaturesToSacrifice) {
                creature.sacrifice(source.getSourceId(), game);
            }
            return true;
        }
        return false;
    }
}