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package mage.abilities.keyword;

import java.util.UUID;
import mage.Constants.CardType;
import mage.Constants.Outcome;
import mage.Constants.Zone;
import mage.abilities.Ability;
import mage.abilities.TriggeredAbilityImpl;
import mage.abilities.effects.OneShotEffect;
import mage.counters.CounterType;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.permanent.Permanent;

/**
 * FAQ 2013/01/11
 *
 * 702.98. Evolve
 * 
 * 702.98a Evolve is a triggered ability. "Evolve" means "Whenever a creature enters
 * the battlefield under your control, if that creature's power is greater than this
 * creature's power and/or that creature's toughness is greater than this creature's
 * toughness, put a +1/+1 counter on this creature."
 *
 * 702.98b If a creature has multiple instances of evolve, each triggers separately
 * 
 * @author LevelX2
 */


public class EvolveAbility extends TriggeredAbilityImpl<EvolveAbility> {

    public EvolveAbility() {
        super(Zone.BATTLEFIELD, new EvolveEffect());
    }

    public EvolveAbility(EvolveAbility ability) {
        super(ability);
    }

    @Override
    public boolean checkTrigger(GameEvent event, Game game) {
        if (event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD) {
            Permanent triggeringCreature = game.getPermanent(event.getTargetId());
            if (triggeringCreature != null
                    && triggeringCreature.getCardType().contains(CardType.CREATURE)
                    && triggeringCreature.getControllerId().equals(this.controllerId)) {
                Permanent sourceCreature = game.getPermanent(sourceId);
                if (sourceCreature != null && isPowerOrThoughnessGreater(sourceCreature, triggeringCreature)) {
                    this.getEffects().get(0).setValue("triggeringCreature", event.getTargetId());
                    return true;
                }
            }
        }

        return false;
    }

    @Override
    public boolean checkInterveningIfClause(Game game) {
        return true;
    }

    public static boolean isPowerOrThoughnessGreater(Permanent sourceCreature, Permanent newCreature) {
        if (newCreature.getPower().getValue() > sourceCreature.getPower().getValue()) {
            return true;
        }
        if (newCreature.getToughness().getValue() > sourceCreature.getToughness().getValue()) {
            return true;
        }
        return false;
    }

    @Override
    public String getRule() {
        return "Evolve <i>(Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)</i>";
    }

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

class EvolveEffect extends OneShotEffect<EvolveEffect> {

    public EvolveEffect() {
        super(Outcome.BoostCreature);
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        UUID triggeringCreatureId = (UUID) getValue("triggeringCreature");
        Permanent triggeringCreature = game.getPermanent(triggeringCreatureId);
        if (triggeringCreature == null) {
            triggeringCreature = (Permanent) game.getLastKnownInformation(triggeringCreatureId, Zone.BATTLEFIELD);
        }
        if (triggeringCreature != null) {
            Permanent sourceCreature = game.getPermanent(source.getSourceId());
            if (sourceCreature != null && EvolveAbility.isPowerOrThoughnessGreater(sourceCreature, triggeringCreature)) {
                sourceCreature.addCounters(CounterType.P1P1.createInstance(), game);
                return true;
            }
        }
        return false;
    }
}

