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package mage.abilities.effects.common.cost;

import mage.abilities.Ability;
import mage.constants.ComparisonType;
import mage.abilities.effects.OneShotEffect;
import mage.cards.Card;
import mage.constants.Outcome;
import mage.filter.common.FilterNonlandCard;
import mage.filter.predicate.mageobject.ConvertedManaCostPredicate;
import mage.game.Game;
import mage.players.Player;
import mage.target.Target;
import mage.target.common.TargetCardInHand;

/**
 * @author fireshoes - Original Code
 * @author JRHerlehy - Implement as seperate class
 *         <p>
 *         Allows player to choose to cast as card from hand without paying its mana cost.
 *         </p>
 */
public class CastWithoutPayingManaCostEffect extends OneShotEffect {

    private final FilterNonlandCard filter;
    private final int manaCost;

    /**
     * @param maxCost Maximum converted mana cost for this effect to apply to
     */
    public CastWithoutPayingManaCostEffect(int maxCost) {
        super(Outcome.PlayForFree);
        filter = new FilterNonlandCard("card with converted mana cost " + maxCost + " or less from your hand");
        filter.add(new ConvertedManaCostPredicate(ComparisonType.FEWER_THAN, maxCost + 1));
        this.manaCost = maxCost;
        this.staticText = "you may cast a card with converted mana cost " + maxCost + " or less from your hand without paying its mana cost";
    }

    public CastWithoutPayingManaCostEffect(final CastWithoutPayingManaCostEffect effect) {
        super(effect);
        this.filter = effect.filter.copy();
        this.manaCost = effect.manaCost;
    }

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());

        if (controller == null) return false;

        Target target = new TargetCardInHand(filter);
        if (target.canChoose(source.getSourceId(), controller.getId(), game) &&
                controller.chooseUse(outcome, "Cast a card with converted mana cost " + manaCost +
                        " or less from your hand without paying its mana cost?", source, game)) {
            Card cardToCast = null;
            boolean cancel = false;
            while (controller.canRespond() && !cancel) {
                if (controller.chooseTarget(outcome, target, source, game)) {
                    cardToCast = game.getCard(target.getFirstTarget());
                    if (cardToCast != null && cardToCast.getSpellAbility().canChooseTarget(game)) {
                        cancel = true;
                    }
                } else {
                    cancel = true;
                }
            }
            if (cardToCast != null) {
                controller.cast(cardToCast.getSpellAbility(), game, true);
            }
        }
        return true;
    }

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