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package mage.cards.w;

import java.util.UUID;
import mage.abilities.Ability;
import mage.abilities.common.SimpleActivatedAbility;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.abilities.dynamicvalue.DynamicValue;
import mage.abilities.dynamicvalue.common.ManacostVariableValue;
import mage.abilities.effects.ReplacementEffectImpl;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.Duration;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.players.Player;

/**
 *
 * @author LevelX2
 */
public class WarCadence extends CardImpl {

    public WarCadence(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{2}{R}");

        // {X}{R}: This turn, creatures can't block unless their controller pays {X} for each blocking creature he or she controls.
        this.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD, new WarCadenceReplacementEffect(), new ManaCostsImpl("{X}{R}")));

    }

    public WarCadence(final WarCadence card) {
        super(card);
    }

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

class WarCadenceReplacementEffect extends ReplacementEffectImpl {

    DynamicValue xCosts = new ManacostVariableValue();

    WarCadenceReplacementEffect() {
        super(Duration.EndOfTurn, Outcome.Neutral);
        staticText = "This turn, creatures can't block unless their controller pays {X} for each blocking creature he or she controls";
    }

    WarCadenceReplacementEffect(WarCadenceReplacementEffect effect) {
        super(effect);
    }

    @Override
    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
        Player player = game.getPlayer(event.getPlayerId());
        if (player != null) {
            int amount = xCosts.calculate(game, source, this);
            if (amount > 0) {
                String mana = "{" + amount + '}';
                ManaCostsImpl cost = new ManaCostsImpl(mana);
                if (cost.canPay(source, source.getSourceId(), event.getPlayerId(), game)
                        && player.chooseUse(Outcome.Benefit, "Pay " + mana + " to declare blocker?", source, game)) {
                    if (cost.payOrRollback(source, game, source.getSourceId(), event.getPlayerId())) {
                        return false;
                    }
                }
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean checksEventType(GameEvent event, Game game) {
        return event.getType() == GameEvent.EventType.DECLARE_BLOCKER;
    }

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

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

}