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 *        of conditions and the following disclaimer in the documentation and/or other materials
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package mage.cards.r;

import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.SpellAbility;
import mage.abilities.common.SimpleStaticAbility;
import mage.abilities.dynamicvalue.common.OpponentsLostLifeCount;
import mage.abilities.effects.ContinuousRuleModifyingEffectImpl;
import mage.abilities.effects.common.cost.CostModificationEffectImpl;
import mage.abilities.keyword.FlashbackAbility;
import mage.abilities.keyword.FlyingAbility;
import mage.abilities.keyword.TrampleAbility;
import mage.cards.Card;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.*;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.util.CardUtil;

import java.util.UUID;

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

    public RakdosLordOfRiots(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{B}{B}{R}{R}");
        addSuperType(SuperType.LEGENDARY);
        this.subtype.add("Demon");

        this.power = new MageInt(6);
        this.toughness = new MageInt(6);

        // You can't cast Rakdos, Lord of Riots unless an opponent lost life this turn.
        this.addAbility(new SimpleStaticAbility(Zone.ALL, new RakdosLordOfRiotsCantCastEffect()));

        // Flying, trample
        this.addAbility(FlyingAbility.getInstance());
        this.addAbility(TrampleAbility.getInstance());

        // Creature spells you cast cost {1} less to cast for each 1 life your opponents have lost this turn.
        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new RakdosLordOfRiotsCostReductionEffect()));
    }

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

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

class RakdosLordOfRiotsCantCastEffect extends ContinuousRuleModifyingEffectImpl {

    public RakdosLordOfRiotsCantCastEffect() {
        super(Duration.WhileOnBattlefield, Outcome.Detriment);
        staticText = "You can't cast {this} unless an opponent lost life this turn";
    }

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

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

    @Override
    public RakdosLordOfRiotsCantCastEffect copy() {
        return new RakdosLordOfRiotsCantCastEffect(this);
    }
    
    @Override
    public boolean checksEventType(GameEvent event, Game game) {
        return event.getType() == EventType.CAST_SPELL;
    }
    
    @Override
    public boolean applies(GameEvent event, Ability source, Game game) {
        if (event.getSourceId().equals(source.getSourceId())) {
            if (new OpponentsLostLifeCount().calculate(game, source, this) == 0) {
                return true;
            }
        }
        return false;
    }
}

class RakdosLordOfRiotsCostReductionEffect extends CostModificationEffectImpl {

    RakdosLordOfRiotsCostReductionEffect() {
        super(Duration.WhileOnBattlefield, Outcome.Benefit, CostModificationType.REDUCE_COST);
        staticText = "Creature spells you cast cost {1} less to cast for each 1 life your opponents have lost this turn";
    }

    RakdosLordOfRiotsCostReductionEffect(RakdosLordOfRiotsCostReductionEffect effect) {
        super(effect);
    }

    @Override
    public boolean apply(Game game, Ability source, Ability abilityToModify) {
        Ability spellAbility = (SpellAbility) abilityToModify;
        if (spellAbility != null) {
            OpponentsLostLifeCount dynamicValue = new OpponentsLostLifeCount();
            int amount = dynamicValue.calculate(game, source, this);
            if (amount > 0) {
                CardUtil.reduceCost(spellAbility, amount);
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean applies(Ability abilityToModify, Ability source, Game game) {
        if (abilityToModify instanceof SpellAbility || abilityToModify instanceof FlashbackAbility) {
            Card sourceCard = game.getCard(abilityToModify.getSourceId());
            if (sourceCard != null && abilityToModify.getControllerId().equals(source.getControllerId()) && (sourceCard.isCreature())) {
                return true;
            }
        }
        return false;
    }

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

}