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

//WarGrowlmon
namespace DCGO.CardEffects.BT24
{
    public class BT24_076 : CEntity_Effect
    {
        public override List<ICardEffect> CardEffects(EffectTiming timing, CardSource card)
        {
            List<ICardEffect> cardEffects = new List<ICardEffect>();

            #region Trash Main
            if (timing == EffectTiming.OnDeclaration)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Play this card from trash with reduced cost", CanUseCondition, card);
                activateClass.SetUpActivateClass(null, ActivateCoroutine, -1, false, EffectDescription());
                activateClass.SetIsDigimonEffect(true);
                cardEffects.Add(activateClass);

                string EffectDescription()
                {
                    return "[Trash] [Main] If you have 4 or fewer cards in your hand, you may play this card from your trash with the play cost reduced by 2.";
                }

                bool CanUseCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.IsOwnerTurn(card)
                        && CardEffectCommons.IsExistOnTrash(card)
                        && card.Owner.HandCards.Count <= 4;
                }

                IEnumerator ActivateCoroutine(Hashtable _hashtable)
                {
                    #region reduce play cost
                    ChangeCostClass changeCostClass = new ChangeCostClass();
                    changeCostClass.SetUpICardEffect($"Play Cost -2", CanUseCondition1, card);
                    changeCostClass.SetUpChangeCostClass(changeCostFunc: ChangeCost, cardSourceCondition: CardSourceCondition, rootCondition: RootCondition, isUpDown: isUpDown, isCheckAvailability: () => false, isChangePayingCost: () => true);
                    Func<EffectTiming, ICardEffect> getCardEffect = GetCardEffect;
                    card.Owner.UntilCalculateFixedCostEffect.Add(getCardEffect);

                    ICardEffect GetCardEffect(EffectTiming _timing)
                    {
                        if (_timing == EffectTiming.None)
                        {
                            return changeCostClass;
                        }

                        return null;
                    }

                    bool CanUseCondition1(Hashtable hashtable)
                    {
                        return true;
                    }

                    int ChangeCost(CardSource cardSource, int Cost, SelectCardEffect.Root root, List<Permanent> targetPermanents)
                    {
                        return Cost - 2;
                    }

                    bool CardSourceCondition(CardSource cardSource)
                    {
                        return (cardSource == card);
                    }

                    bool RootCondition(SelectCardEffect.Root root)
                    {
                        return true;
                    }

                    bool isUpDown()
                    {
                        return true;
                    }
                    #endregion

                    yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.PlayPermanentCards(
                          cardSources: new List<CardSource> { card },
                          activateClass: activateClass,
                          payCost: true,
                          isTapped: false,
                          root: SelectCardEffect.Root.Trash,
                          activateETB: true));

                    #region release effect reducing play cost 
                    card.Owner.UntilCalculateFixedCostEffect.Remove(getCardEffect);
                    #endregion
                }
            }
            #endregion

            #region Shared OP/WD

            string SharedEffectName() => "Delete 1 lvl 4 or lower.";

            string SharedEffectDescription(string tag) => $"[{tag}] Delete 1 of your opponent's level 4 or lower Digimon.";

            bool SharedCanActivateCondition(Hashtable hashtable)
            {
                return CardEffectCommons.IsExistOnBattleAreaDigimon(card);
            }

            bool CanSelectLevelOpponentPermanentCondition(Permanent permanent)
            {
                return CardEffectCommons.IsPermanentExistsOnOpponentBattleAreaDigimon(permanent, card)
                    && permanent.TopCard.HasLevel
                    && permanent.Level <= 4;
            }

            IEnumerator SharedActivateCoroutine(Hashtable hashtable, ActivateClass activateClass)
            {          
                if (CardEffectCommons.HasMatchConditionPermanent(CanSelectLevelOpponentPermanentCondition))
                {
                    SelectPermanentEffect selectPermanentEffect = GManager.instance.GetComponent<SelectPermanentEffect>();

                    selectPermanentEffect.SetUp(
                        selectPlayer: card.Owner,
                        canTargetCondition: CanSelectLevelOpponentPermanentCondition,
                        canTargetCondition_ByPreSelecetedList: null,
                        canEndSelectCondition: null,
                        maxCount: 1,
                        canNoSelect: false,
                        canEndNotMax: false,
                        selectPermanentCoroutine: null,
                        afterSelectPermanentCoroutine: null,
                        mode: SelectPermanentEffect.Mode.Destroy,
                        cardEffect: activateClass);

                    selectPermanentEffect.SetUpCustomMessage("Select 1 of your opponents lvl 4 or lower Digimon to delete.", "The opponent is selecting 1 of your Digimon to delete.");
                    yield return ContinuousController.instance.StartCoroutine(selectPermanentEffect.Activate());
                }
            }

            #endregion

            #region On Play

            if (timing == EffectTiming.OnEnterFieldAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect(SharedEffectName(), CanUseCondition, card);
                activateClass.SetUpActivateClass(SharedCanActivateCondition, hash => SharedActivateCoroutine(hash, activateClass), -1, false, SharedEffectDescription("On Play"));
                cardEffects.Add(activateClass);

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

            #endregion

            #region When Digivolving

            if (timing == EffectTiming.OnEnterFieldAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect(SharedEffectName(), CanUseCondition, card);
                activateClass.SetUpActivateClass(SharedCanActivateCondition, hash => SharedActivateCoroutine(hash, activateClass), -1, false, SharedEffectDescription("When Digivolving"));
                cardEffects.Add(activateClass);

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

            #endregion

            #region ESS - On Deletion
            if (timing == EffectTiming.OnDestroyedAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Play 1 Digimon from trash", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, -1, true, EffectDescription());
                activateClass.SetIsInheritedEffect(true);
                cardEffects.Add(activateClass);

                string EffectDescription()
                {
                    return "[On Deletion] You may play 1 level 4 or lower Digimon card with the [Dark Dragon] or [Evil Dragon] trait from your trash without paying the cost.";
                }

                bool CanSelectCardCondition(CardSource cardSource)
                {
                    return cardSource.IsDigimon
                        && cardSource.HasLevel
                        && cardSource.Level <= 4
                        && (cardSource.EqualsTraits("Dark Dragon") || cardSource.EqualsTraits("Evil Dragon"))
                        && CardEffectCommons.CanPlayAsNewPermanent(cardSource: cardSource, payCost: false, cardEffect: activateClass);
                }

                bool CanUseCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.CanTriggerOnDeletion(hashtable, card, activateClass);
                }

                bool CanActivateCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.CanActivateOnDeletion(card, activateClass)
                        && CardEffectCommons.HasMatchConditionOwnersCardInTrash(card, CanSelectCardCondition);
                }

                IEnumerator ActivateCoroutine(Hashtable _hashtable)
                {
                    if (CardEffectCommons.HasMatchConditionOwnersCardInTrash(card, CanSelectCardCondition))
                    {
                        List<CardSource> selectedCards = new List<CardSource>();

                        int maxCount = 1;

                        SelectCardEffect selectCardEffect = GManager.instance.GetComponent<SelectCardEffect>();

                        selectCardEffect.SetUp(
                                    canTargetCondition: CanSelectCardCondition,
                                    canTargetCondition_ByPreSelecetedList: null,
                                    canEndSelectCondition: null,
                                    canNoSelect: () => true,
                                    selectCardCoroutine: SelectCardCoroutine,
                                    afterSelectCardCoroutine: null,
                                    message: "Select 1 card to play.",
                                    maxCount: maxCount,
                                    canEndNotMax: true,
                                    isShowOpponent: true,
                                    mode: SelectCardEffect.Mode.Custom,
                                    root: SelectCardEffect.Root.Trash,
                                    customRootCardList: null,
                                    canLookReverseCard: true,
                                    selectPlayer: card.Owner,
                                    cardEffect: activateClass);

                        selectCardEffect.SetUpCustomMessage("Select 1 card with [Dark Dragon]/[Evil Dragon] trait to play.", "The opponent is selecting 1 card to play.");
                        selectCardEffect.SetUpCustomMessage_ShowCard("Played Card");

                        yield return StartCoroutine(selectCardEffect.Activate());

                        IEnumerator SelectCardCoroutine(CardSource cardSource)
                        {
                            selectedCards.Add(cardSource);

                            yield return null;
                        }

                        yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.PlayPermanentCards(
                            cardSources: selectedCards,
                            activateClass: activateClass,
                            payCost: false,
                            isTapped: false,
                            root: SelectCardEffect.Root.Trash,
                            activateETB: true));
                    }
                }
            }
            #endregion

            return cardEffects;
        }
    }
}