DCGO/Assets/Scripts/CardEffect/EX9/Purple/EX9_006.cs

using System.Collections;
using System.Collections.Generic;
using System.Linq;

namespace DCGO.CardEffects.EX9
{
    public class EX9_006 : CEntity_Effect
    {
        public override List<ICardEffect> CardEffects(EffectTiming timing, CardSource card)
        {
            List<ICardEffect> cardEffects = new List<ICardEffect>();

            #region Inherit
            if (timing == EffectTiming.OnAllyAttack)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Digivolve in the trash", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, 1, true, EffectDescription());
                activateClass.SetIsInheritedEffect(true);
                activateClass.SetHashString("Digivolve_EX9_006");
                cardEffects.Add(activateClass);

                string EffectDescription() => "[When Attacking][Once Per Turn] By trashing this Digimon's bottom face-down digivolution card, this Digimon may digivolve into a [Ver.5] trait Digimon card in the trash with the digivolution cost reduced by 1.";

                bool CanUseCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.IsExistOnBattleAreaDigimon(card) && 
                           CardEffectCommons.CanTriggerOnAttack(hashtable, card);
                }

                bool CanSelectCardCondition(CardSource cardSource)
                {
                    if (cardSource.IsDigimon)
                    {
                        if (cardSource.ContainsTraits("Ver.5"))
                        {
                            if (cardSource.CanPlayCardTargetFrame(card.PermanentOfThisCard().PermanentFrame, false, activateClass))
                            {
                                return true;
                            }
                        }
                    }

                    return false;
                }

                bool CanSelectTrashSourceCardCondition(CardSource cardSource)
                {
                    return cardSource.IsFlipped && !cardSource.CanNotTrashFromDigivolutionCards(activateClass);
                }

                bool CanActivateCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.IsExistOnBattleAreaDigimon(card) &&
                           card.PermanentOfThisCard().DigivolutionCards.Count(CanSelectTrashSourceCardCondition) >= 1;
                }

                IEnumerator ActivateCoroutine(Hashtable hashtable)
                {
                    List<CardSource> selectedCards = new List<CardSource>();

                    CardSource trashTargetCard = card.PermanentOfThisCard().DigivolutionCards.Filter(CanSelectTrashSourceCardCondition)[^1];

                    selectedCards.Add(trashTargetCard);

                    if (selectedCards.Count >= 1)
                    {
                        yield return ContinuousController.instance.StartCoroutine(
                            new ITrashDigivolutionCards(card.PermanentOfThisCard(), selectedCards, activateClass).TrashDigivolutionCards());

                        if (CardEffectCommons.HasMatchConditionOwnersCardInTrash(card, CanSelectCardCondition))
                        {
                            yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.DigivolveIntoHandOrTrashCard(
                                targetPermanent: card.PermanentOfThisCard(),
                                cardCondition: CanSelectCardCondition,
                                payCost: true,
                                reduceCostTuple: (reduceCost: 1, reduceCostCardCondition: null),
                                fixedCostTuple: null,
                                ignoreDigivolutionRequirementFixedCost: -1,
                                isHand: false,
                                activateClass: activateClass,
                                successProcess: null));
                        }
                    }
                }
            }
            #endregion

            return cardEffects;
        }
    }
}