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package mage.abilities.effects.common;

import java.util.UUID;
import mage.Constants.Duration;
import mage.Constants.Outcome;
import mage.abilities.Ability;
import mage.abilities.SpellAbility;
import mage.abilities.common.DealsCombatDamageToAPlayerTriggeredAbility;
import mage.abilities.effects.ContinuousEffect;
import mage.abilities.effects.Effect;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.continious.GainAbilityTargetEffect;
import mage.cards.Card;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.common.TargetControlledCreaturePermanent;
import mage.target.targetpointer.FixedTarget;

/**
 * FAQ 2013/01/11
 * 
 * 702.97. Cipher
 *
 * 702.97a Cipher appears on some instants and sorceries. It represents two static
 * abilities, one that functions while the spell is on the stack and one that functions
 * while the card with cipher is in the exile zone. "Cipher" means "If this spell is
 * represented by a card, you may exile this card encoded on a creature you control"
 * and "As long as this card is encoded on that creature, that creature has 'Whenever
 * this creature deals combat damage to a player, you may copy this card and you may
 * cast the copy without paying its mana cost.'"
 *
 * 702.97b The term "encoded" describes the relationship between the card with cipher
 * while in the exile zone and the creature chosen when the spell represented by that
 * card resolves.
 *
 * 702.97c The card with cipher remains encoded on the chosen creature as long as the
 * card with cipher remains exiled and the creature remains on the battlefield. The
 * card remains encoded on that object even if it changes controller or stops being
 * a creature, as long as it remains on the battlefield.
 *
 * TODO: Implement Cipher as two static abilities concerning the rules.
 *
 * @author LevelX2
 */


public class CipherEffect extends OneShotEffect<CipherEffect> {

    public CipherEffect() {
        super(Outcome.Copy);
        staticText ="<br><br/>Cipher <i>(Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)</i>";
    }

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        TargetControlledCreaturePermanent target = new TargetControlledCreaturePermanent(true);
        if (controller != null && target != null) {
            if (target.canChoose(source.getControllerId(), game)
                && controller.chooseUse(outcome, "Cipher this spell to a creature?", game)) {
                controller.chooseTarget(outcome, target, source, game);
                Card sourceCard = game.getCard(source.getSourceId());
                Permanent targetCreature = game.getPermanent(target.getFirstTarget());
                if (targetCreature != null && sourceCard != null) {
                    String ruleText = new StringBuilder("you may cast a copy of ").append(sourceCard.getName()).append(" without paying its mana cost").toString();
                    Ability ability = new DealsCombatDamageToAPlayerTriggeredAbility(new CipherStoreEffect(source.getSourceId(), ruleText), true);
                    ContinuousEffect effect = new GainAbilityTargetEffect(ability, Duration.Custom);
                    effect.setTargetPointer(new FixedTarget(target.getFirstTarget()));
                    game.addEffect(effect, source);
                    game.informPlayers(new StringBuilder(sourceCard.getName()).append(": Spell ciphered to ").append(targetCreature.getName()).toString());
                    return sourceCard.moveToExile(null, "", source.getId(), game);
                } else {
                    return false;
                }
            }
            return true;
        }
        return false;
    }

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

class CipherStoreEffect extends OneShotEffect<CipherStoreEffect> {

    private UUID  cipherCardId;

    public CipherStoreEffect(UUID cipherCardId, String ruleText) {
        super(Outcome.Copy);
        this.cipherCardId = cipherCardId;
        staticText = ruleText;
    }

    public CipherStoreEffect(final CipherStoreEffect effect) {
        super(effect);
        this.cipherCardId = effect.cipherCardId;
    }

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        Card cipherCard = game.getCard(cipherCardId);
        if (cipherCard != null) {
            Card copyCard = game.copyCard(cipherCard, source, controller.getId());
            SpellAbility ability = copyCard.getSpellAbility();
            // remove the cipher effect from the copy
            Effect cipherEffect = null;
            for (Effect effect :ability.getEffects()) {
                if (effect instanceof CipherEffect) {
                    cipherEffect = effect;
                }
            }
            ability.getEffects().remove(cipherEffect);
            if (ability != null && ability instanceof SpellAbility) {
                controller.cast(ability, game, true);
            }
        }

        return false;
    }

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