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* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
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package mage.abilities.keyword;

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.cards.Card;
import mage.game.ExileZone;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.game.stack.Spell;
import mage.players.Player;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class CascadeAbility extends TriggeredAbilityImpl<CascadeAbility> {
    //20091005 - 702.82

    public CascadeAbility() {
        super(Zone.STACK, new CascadeEffect());
    }

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

    @Override
    public boolean checkTrigger(GameEvent event, Game game) {
        if (event.getType() == EventType.SPELL_CAST) {
            Spell spell = game.getStack().getSpell(event.getTargetId());
            if (spell != null && spell.getSourceId().equals(this.getSourceId())) {
                return true;
            }
        }
        return false;
    }

    @Override
    public String getRule() {
        return "Cascade";
    }

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

class CascadeEffect extends OneShotEffect<CascadeEffect> {

    public CascadeEffect() {
        super(Outcome.PutCardInPlay);
    }

    public CascadeEffect(CascadeEffect effect) {
        super(effect);
    }

    @Override
    public boolean apply(Game game, Ability source) {
        Card card;
        Player player = game.getPlayer(source.getControllerId());
        ExileZone exile = game.getExile().createZone(source.getSourceId(), player.getName() + " Cascade");
        int sourceCost = game.getCard(source.getSourceId()).getManaCost().convertedManaCost();
        do {
            card = player.getLibrary().removeFromTop(game);
            if (card == null)
                break;
            card.moveToExile(exile.getId(), exile.getName(), source.getId(), game);
        } while (card.getCardType().contains(CardType.LAND) || card.getManaCost().convertedManaCost() >= sourceCost);

        if (card != null) {
            if (player.chooseUse(outcome, "Use cascade effect on " + card.getName() + "?", game)) {
                player.cast(card.getSpellAbility(), game, true);
                exile.remove(card.getId());
            }
        }

        while (exile.size() > 0) {
            card = exile.getRandom(game);
            exile.remove(card.getId());
            card.moveToZone(Zone.LIBRARY, source.getId(), game, false);
        }

        return true;
    }

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

}