package mage.cards.b;

import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.TriggeredAbilityImpl;
import mage.abilities.common.EntersBattlefieldTriggeredAbility;
import mage.abilities.costs.common.PayLifeCost;
import mage.abilities.effects.common.DoIfCostPaid;
import mage.abilities.effects.common.ExileTargetEffect;
import mage.abilities.effects.common.ReturnSourceFromGraveyardToHandEffect;
import mage.abilities.keyword.LifelinkAbility;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.SubType;
import mage.constants.Zone;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.players.Player;
import mage.target.common.TargetCardInGraveyard;

/**
 *
 * @author LevelX2
 */
public final class BloodOperative extends CardImpl {

    public BloodOperative(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{B}{B}");

        this.subtype.add(SubType.VAMPIRE);
        this.subtype.add(SubType.ASSASSIN);
        this.power = new MageInt(3);
        this.toughness = new MageInt(1);

        // Lifelink
        this.addAbility(LifelinkAbility.getInstance());

        // When Blood Operative enters the battlefield, you may exile target card from a graveyard.
        Ability ability = new EntersBattlefieldTriggeredAbility(new ExileTargetEffect(), true);
        ability.addTarget(new TargetCardInGraveyard());
        this.addAbility(ability);

        // Whenever you surveil, if Blood Operative is in your graveyard, you may pay 3 life. If you do, return Blood Operative to your hand.
        this.addAbility(new BloodOperativeTriggeredAbility());
    }

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

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

class BloodOperativeTriggeredAbility extends TriggeredAbilityImpl {

    public BloodOperativeTriggeredAbility() {
        super(Zone.BATTLEFIELD, new DoIfCostPaid(new ReturnSourceFromGraveyardToHandEffect(), new PayLifeCost(3)), false);
    }

    public BloodOperativeTriggeredAbility(final BloodOperativeTriggeredAbility ability) {
        super(ability);
    }

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

    @Override
    public boolean checkEventType(GameEvent event, Game game) {
        return event.getType() == GameEvent.EventType.SURVEIL;
    }

    @Override
    public boolean checkTrigger(GameEvent event, Game game) {
        return event.getPlayerId().equals(getControllerId());
    }

    @Override
    public boolean checkInterveningIfClause(Game game) {
        Player controller = game.getPlayer(getControllerId());
        if (controller != null && controller.getGraveyard().contains(getSourceId())) {
            return super.checkInterveningIfClause(game);
        }
        return false;
    }

    @Override
    public String getRule() {
        return "Whenever you surveil, if {this} is in your graveyard, you may pay 3 life. If you do, return {this} to your hand.";
    }
}