/*
 *  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.abilities.keyword;

import mage.Constants.Duration;
import mage.Constants.Outcome;
import mage.Constants.TimingRule;
import mage.Constants.Zone;
import mage.abilities.Ability;
import mage.abilities.ActivatedAbilityImpl;
import mage.abilities.DelayedTriggeredAbility;
import mage.abilities.costs.mana.ManaCosts;
import mage.abilities.effects.ReplacementEffectImpl;
import mage.abilities.effects.common.CreateDelayedTriggeredAbilityEffect;
import mage.abilities.effects.common.ExileSourceEffect;
import mage.abilities.effects.common.continious.GainAbilitySourceEffect;
import mage.abilities.effects.common.ReturnSourceFromGraveyardToBattlefieldEffect;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.game.events.ZoneChangeEvent;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class UnearthAbility extends ActivatedAbilityImpl<UnearthAbility> {

    protected boolean unearthed;

    public UnearthAbility(ManaCosts costs) {
        super(Zone.GRAVEYARD, new ReturnSourceFromGraveyardToBattlefieldEffect(), costs);
        this.timing = TimingRule.SORCERY;
        this.addEffect(new GainAbilitySourceEffect(HasteAbility.getInstance(), Duration.WhileOnBattlefield));
        this.addEffect(new CreateDelayedTriggeredAbilityEffect(new UnearthDelayedTriggeredAbility()));
        this.addEffect(new UnearthLeavesBattlefieldEffect());
    }

    public UnearthAbility(final UnearthAbility ability) {
        super(ability);
        this.unearthed = ability.unearthed;
    }

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

    public boolean isUnearthed() {
        return unearthed;
    }

    @Override
    public String getRule() {
        return "Unearth " + super.getRule();
    }

}

class UnearthDelayedTriggeredAbility extends DelayedTriggeredAbility<UnearthDelayedTriggeredAbility> {

    public UnearthDelayedTriggeredAbility() {
        super(new ExileSourceEffect());
    }

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

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

    @Override
    public boolean checkTrigger(GameEvent event, Game game) {
        if (event.getType() == EventType.END_TURN_STEP_PRE && event.getPlayerId().equals(this.controllerId)) {
            return true;
        }
        return false;
    }

    @Override
    public String getRule() {
        return "Exile {this} at the beginning of the next end step";
    }

}

class UnearthLeavesBattlefieldEffect extends ReplacementEffectImpl<UnearthLeavesBattlefieldEffect> {

    public UnearthLeavesBattlefieldEffect() {
        super(Duration.WhileOnBattlefield, Outcome.Exile);
        staticText = "When {this} leaves the battlefield, exile it";
    }

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

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

    @Override
    public boolean applies(GameEvent event, Ability source, Game game) {
        if (event.getType() == EventType.ZONE_CHANGE && event.getTargetId().equals(source.getSourceId())) {
            ZoneChangeEvent zEvent = (ZoneChangeEvent)event;
            if (zEvent.getFromZone() == Zone.BATTLEFIELD && zEvent.getToZone() != Zone.EXILED)
                return true;
        }
        return false;
    }

    @Override
    public boolean apply(Game game, Ability source) {
        ExileSourceEffect effect = new ExileSourceEffect();
        return effect.apply(game, source);
    }

    @Override
    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
        return apply(game, source);
    }

}