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 *        of conditions and the following disclaimer in the documentation and/or other materials
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package mage.cards.g;

import mage.MageInt;
import mage.MageObject;
import mage.abilities.Ability;
import mage.abilities.common.ExploitCreatureTriggeredAbility;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.keyword.ExploitAbility;
import mage.cards.*;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.filter.FilterCard;
import mage.game.Game;
import mage.players.Player;
import mage.target.TargetCard;

import java.util.UUID;

/**
 *
 * @author fireshoes
 */
public class GurmagDrowner extends CardImpl {

    public GurmagDrowner(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{3}{U}");
        this.subtype.add("Naga");
        this.subtype.add("Wizard");
        this.power = new MageInt(2);
        this.toughness = new MageInt(4);

        // Exploit
        this.addAbility(new ExploitAbility());
        
        // When Gurmag Drowner exploits a creature, look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard.
        this.addAbility(new ExploitCreatureTriggeredAbility(new GurmagDrownerEffect(), false));
    }

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

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

class GurmagDrownerEffect extends OneShotEffect {

    public GurmagDrownerEffect() {
        super(Outcome.DrawCard);
        this.staticText = "look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        MageObject sourceObject = game.getObject(source.getSourceId());
        if (controller != null && sourceObject != null) {
            Cards cards = new CardsImpl();
            cards.addAll(controller.getLibrary().getTopCards(game, 4));
            if (!cards.isEmpty()) {
                controller.lookAtCards(sourceObject.getName(), cards, game);
                TargetCard target = new TargetCard(Zone.LIBRARY, new FilterCard("card to put in your hand"));
                if (controller.choose(Outcome.Benefit, cards, target, game)) {
                    Card card = cards.get(target.getFirstTarget(), game);
                    if (card != null) {
                        controller.moveCards(card, Zone.HAND, source, game);
                        cards.remove(card);
                    }
                }
                controller.moveCards(cards, Zone.GRAVEYARD, source, game);
            }
            return true;
        }
        return false;
    }
}