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

// Megadramon
namespace DCGO.CardEffects.EX9
{
    public class EX9_064 : CEntity_Effect
    {
        public override List<ICardEffect> CardEffects(EffectTiming timing, CardSource card)
        {
            List<ICardEffect> cardEffects = new List<ICardEffect>();

            #region Alternate Digivolution Requirement

            if (timing == EffectTiming.None)
            {
                static bool PermanentCondition(Permanent targetPermanent)
                {
                    return targetPermanent.TopCard.IsLevel4 &&
                        (targetPermanent.TopCard.EqualsTraits("DM") || targetPermanent.TopCard.EqualsTraits("Cyborg"));
                }

                cardEffects.Add(CardEffectFactory.AddSelfDigivolutionRequirementStaticEffect(permanentCondition: PermanentCondition, digivolutionCost: 3, ignoreDigivolutionRequirement: false, card: card, condition: null));
            }

            #endregion

            #region Play Cost Reduction

            if (timing == EffectTiming.BeforePayCost)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Trash 1 [Cyborg]/[Ver.4] card from hand, to get Play Cost -2", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, -1, true, EffectDiscription());
                activateClass.SetHashString("PlayCost-2_EX9_064");
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "When this card would be played, by trashing 1 [Cyborg]/[Ver.4] card from your hand, reduce the play cost by 2.";
                }

                bool CanUseCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.CanTriggerWhenPermanentWouldPlay(hashtable, cardSource => cardSource == card);
                }

                bool CanActivateCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.HasMatchConditionOwnersHand(card, CanSelectCardCondition);
                }

                bool CanSelectCardCondition(CardSource cardSource)
                {
                    return CardEffectCommons.IsExistOnHand(cardSource) &&
                        cardSource != card &&
                        (cardSource.EqualsTraits("Cyborg") ||
                        cardSource.EqualsTraits("Ver.4"));
                }

                IEnumerator ActivateCoroutine(Hashtable _hashtable)
                {
                    bool CanNoSelect =
                    CardEffectCommons.GetPlayCardClassFromHashtable(_hashtable) != null &&
                        card.PayingCost(
                            CardEffectCommons.GetPlayCardClassFromHashtable(_hashtable).Root,
                            null,
                            checkAvailability: false)
                        <= card.Owner.MaxMemoryCost;

                    bool discarded = false;
                    int discardCount = 1;
                    SelectHandEffect selectHandEffect = GManager.instance.GetComponent<SelectHandEffect>();

                    selectHandEffect.SetUp(
                        selectPlayer: card.Owner,
                        canTargetCondition: CanSelectCardCondition,
                        canTargetCondition_ByPreSelecetedList: null,
                        canEndSelectCondition: null,
                        maxCount: discardCount,
                        canNoSelect: true,
                        canEndNotMax: false,
                        isShowOpponent: true,
                        selectCardCoroutine: null,
                        afterSelectCardCoroutine: AfterSelectCardCoroutine,
                        mode: SelectHandEffect.Mode.Discard,
                        cardEffect: activateClass);
                    selectHandEffect.SetUpCustomMessage("Choose a [Cyborg] or [Ver.4] card to discard", "The opponent is selecting 1 card in hand to discard.");
                    selectHandEffect.SetUpCustomMessage_ShowCard("Discarded Card");
                    yield return StartCoroutine(selectHandEffect.Activate());

                    IEnumerator AfterSelectCardCoroutine(List<CardSource> cardSources)
                    {
                        if (cardSources.Count >= 1)
                        {
                            discarded = true;
                            yield return null;
                        }
                    }

                    if (discarded)
                    {
                        if (card.Owner.CanReduceCost(null, card))
                        {
                            ContinuousController.instance.PlaySE(GManager.instance.GetComponent<Effects>().BuffSE);
                        }

                        ChangeCostClass changeCostClass = new ChangeCostClass();
                        changeCostClass.SetUpICardEffect("Play Cost -2", hashtable => true, card);
                        changeCostClass.SetUpChangeCostClass(changeCostFunc: ChangeCost, cardSourceCondition: CardSourceCondition, rootCondition: RootCondition, isUpDown: isUpDown, isCheckAvailability: () => false, isChangePayingCost: () => true);
                        card.Owner.UntilCalculateFixedCostEffect.Add((_timing) => changeCostClass);

                        yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.ShowReducedCost(_hashtable));

                        int ChangeCost(CardSource cardSource, int Cost, SelectCardEffect.Root root, List<Permanent> targetPermanents)
                        {
                            if (CardSourceCondition(cardSource) &&
                                RootCondition(root) &&
                                PermanentsCondition(targetPermanents))
                            {
                                Cost -= 2;
                            }

                            return Cost;
                        }

                        bool PermanentsCondition(List<Permanent> targetPermanents)
                        {
                            return targetPermanents == null ||
                                targetPermanents.Count((targetPermanent) => targetPermanent != null) == 0;
                        }

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

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

                        bool isUpDown()
                        {
                            return true;
                        }
                    }
                }
            }

            #endregion

            #region On Play

            if (timing == EffectTiming.OnEnterFieldAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Place 1 digimon from trash FD in source, delete 2 digimon", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, -1, true, EffectDiscription());
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "[On Play] By placing 1 Digimon card from your trash face down as this Digimon's bottom digivolution card, delete 2 of your opponent's play cost 4 or lower Digimon. For each of this Digimon's face-down digivolution cards, add 1 to this effect's play cost maximum.";
                }

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

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

                bool CanSelectCardCondition(CardSource cardSource)
                {
                    return cardSource.IsDigimon;
                }

                bool CanSelectPermanentCondition(Permanent permanent)
                {
                    var playCost = 4 + card.PermanentOfThisCard().DigivolutionCards.Filter(x => x.IsFlipped).Count;
                    return CardEffectCommons.IsPermanentExistsOnOpponentBattleAreaDigimon(permanent, card) && 
                           permanent.TopCard.HasPlayCost && permanent.TopCard.BasePlayCostFromEntity <= playCost;
                }

                IEnumerator ActivateCoroutine(Hashtable hashtable)
                {
                    if (CardEffectCommons.HasMatchConditionOwnersCardInTrash(card, CanSelectCardCondition))
                    {
                        CardSource selectedCard = null;
                        int maxCount = Math.Min(1, CardEffectCommons.MatchConditionOwnersCardCountInTrash(card, CanSelectCardCondition));
                        SelectCardEffect selectCardEffect = GManager.instance.GetComponent<SelectCardEffect>();

                        selectCardEffect.SetUp(
                                    canTargetCondition: CanSelectCardCondition,
                                    canTargetCondition_ByPreSelecetedList: null,
                                    canEndSelectCondition: null,
                                    canNoSelect: () => true,
                                    selectCardCoroutine: SelectCardCoroutine,
                                    afterSelectCardCoroutine: null,
                                    message: "Select 1 digimon to place FD as source",
                                    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 digimon to place FD as source", "The opponent is selecting 1 digimon");
                        yield return StartCoroutine(selectCardEffect.Activate());

                        IEnumerator SelectCardCoroutine(CardSource cardSource)
                        {
                            selectedCard = cardSource;
                            yield return null;
                        }

                        if (selectedCard != null)
                        {
                            yield return ContinuousController.instance.StartCoroutine(CardObjectController.AddExecutingCard(selectedCard));
                            yield return ContinuousController.instance.StartCoroutine(card.PermanentOfThisCard().AddDigivolutionCardsBottom(new List<CardSource>() { selectedCard }, activateClass, isFacedown: true));

                            if (CardEffectCommons.HasMatchConditionPermanent(CanSelectPermanentCondition))
                            {
                                int maxCount1 = Math.Min(2, CardEffectCommons.MatchConditionPermanentCount(CanSelectPermanentCondition));

                                SelectPermanentEffect selectPermanentEffect = GManager.instance.GetComponent<SelectPermanentEffect>();

                                selectPermanentEffect.SetUp(
                                    selectPlayer: card.Owner,
                                    canTargetCondition: CanSelectPermanentCondition,
                                    canTargetCondition_ByPreSelecetedList: null,
                                    canEndSelectCondition: null,
                                    maxCount: maxCount1,
                                    canNoSelect: false,
                                    canEndNotMax: false,
                                    selectPermanentCoroutine: null,
                                    afterSelectPermanentCoroutine: null,
                                    mode: SelectPermanentEffect.Mode.Destroy,
                                    cardEffect: activateClass);

                                selectPermanentEffect.SetUpCustomMessage("Select 2 digimon to delete.", "The opponent is selecting 2 digimon to delete.");
                                yield return ContinuousController.instance.StartCoroutine(selectPermanentEffect.Activate());
                            }
                        }
                    }
                }
            }

            #endregion

            #region When Digivolving

            if (timing == EffectTiming.OnEnterFieldAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Place 1 digimon from trash FD in source, delete 2 digimon", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, -1, true, EffectDiscription());
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "[When Digivolving] By placing 1 Digimon card from your trash face down as this Digimon's bottom digivolution card, delete 2 of your opponent's play cost 4 or lower Digimon. For each of this Digimon's face-down digivolution cards, add 1 to this effect's play cost maximum.";
                }

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

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

                bool CanSelectCardCondition(CardSource cardSource)
                {
                    return cardSource.IsDigimon;
                }

                bool CanSelectPermanentCondition(Permanent permanent)
                {
                    var playCost = 4 + card.PermanentOfThisCard().DigivolutionCards.Filter(x => x.IsFlipped).Count;
                    return CardEffectCommons.IsPermanentExistsOnOpponentBattleAreaDigimon(permanent, card) &&
                           permanent.TopCard.HasPlayCost && permanent.TopCard.BasePlayCostFromEntity <= playCost;
                }

                IEnumerator ActivateCoroutine(Hashtable hashtable)
                {
                    if (CardEffectCommons.HasMatchConditionOwnersCardInTrash(card, CanSelectCardCondition))
                    {
                        CardSource selectedCard = null;
                        int maxCount = Math.Min(1, CardEffectCommons.MatchConditionOwnersCardCountInTrash(card, CanSelectCardCondition));
                        SelectCardEffect selectCardEffect = GManager.instance.GetComponent<SelectCardEffect>();

                        selectCardEffect.SetUp(
                                    canTargetCondition: CanSelectCardCondition,
                                    canTargetCondition_ByPreSelecetedList: null,
                                    canEndSelectCondition: null,
                                    canNoSelect: () => true,
                                    selectCardCoroutine: SelectCardCoroutine,
                                    afterSelectCardCoroutine: null,
                                    message: "Select 1 digimon to place FD as source",
                                    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 digimon to place FD as source", "The opponent is selecting 1 digimon");
                        yield return StartCoroutine(selectCardEffect.Activate());

                        IEnumerator SelectCardCoroutine(CardSource cardSource)
                        {
                            selectedCard = cardSource;
                            yield return null;
                        }

                        if (selectedCard != null)
                        {
                            yield return ContinuousController.instance.StartCoroutine(CardObjectController.AddExecutingCard(selectedCard));
                            yield return ContinuousController.instance.StartCoroutine(card.PermanentOfThisCard().AddDigivolutionCardsBottom(new List<CardSource>() { selectedCard }, activateClass, isFacedown: true));

                            if (CardEffectCommons.HasMatchConditionPermanent(CanSelectPermanentCondition))
                            {
                                int maxCount1 = Math.Min(2, CardEffectCommons.MatchConditionPermanentCount(CanSelectPermanentCondition));

                                SelectPermanentEffect selectPermanentEffect = GManager.instance.GetComponent<SelectPermanentEffect>();

                                selectPermanentEffect.SetUp(
                                    selectPlayer: card.Owner,
                                    canTargetCondition: CanSelectPermanentCondition,
                                    canTargetCondition_ByPreSelecetedList: null,
                                    canEndSelectCondition: null,
                                    maxCount: maxCount1,
                                    canNoSelect: false,
                                    canEndNotMax: false,
                                    selectPermanentCoroutine: null,
                                    afterSelectPermanentCoroutine: null,
                                    mode: SelectPermanentEffect.Mode.Destroy,
                                    cardEffect: activateClass);

                                selectPermanentEffect.SetUpCustomMessage("Select 2 digimon to delete.", "The opponent is selecting 2 digimon to delete.");
                                yield return ContinuousController.instance.StartCoroutine(selectPermanentEffect.Activate());
                            }
                        }
                    }
                }
            }

            #endregion

            #region ESS

            if (timing == EffectTiming.OnEndAttack)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect("Unsuspend, delete lowest level digimon", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, 1, true, EffectDiscription());
                activateClass.SetHashString("EndAttack_EX9_064");
                activateClass.SetIsInheritedEffect(true);
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "[End of Attack] [Once Per Turn] By unsuspending this Digimon, delete 1 of your Digimon with the lowest level.";
                }

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

                bool CanActivateCondition(Hashtable hashtable)
                {
                    return CardEffectCommons.IsExistOnBattleArea(card);
                }

                bool CanSelectPermanentCondition(Permanent permanent)
                {
                    return CardEffectCommons.IsPermanentExistsOnOwnerBattleAreaDigimon(permanent, card) && 
                           CardEffectCommons.IsMinLevel(permanent, card.Owner);
                }

                IEnumerator ActivateCoroutine(Hashtable hashtable)
                {
                    yield return ContinuousController.instance.StartCoroutine(new IUnsuspendPermanents(new List<Permanent>() { card.PermanentOfThisCard() }, activateClass).Unsuspend());
                    if (!card.PermanentOfThisCard().IsSuspended)
                    {
                        if (CardEffectCommons.HasMatchConditionPermanent(CanSelectPermanentCondition))
                        {
                            int maxCount1 = Math.Min(1, CardEffectCommons.MatchConditionPermanentCount(CanSelectPermanentCondition));

                            SelectPermanentEffect selectPermanentEffect = GManager.instance.GetComponent<SelectPermanentEffect>();

                            selectPermanentEffect.SetUp(
                                selectPlayer: card.Owner,
                                canTargetCondition: CanSelectPermanentCondition,
                                canTargetCondition_ByPreSelecetedList: null,
                                canEndSelectCondition: null,
                                maxCount: maxCount1,
                                canNoSelect: false,
                                canEndNotMax: false,
                                selectPermanentCoroutine: null,
                                afterSelectPermanentCoroutine: null,
                                mode: SelectPermanentEffect.Mode.Destroy,
                                cardEffect: activateClass);

                            selectPermanentEffect.SetUpCustomMessage("Select a digimon to delete.", "The opponent is selecting a digimon to delete.");
                            yield return ContinuousController.instance.StartCoroutine(selectPermanentEffect.Activate());
                        }
                    }
                }
            }

            #endregion

            return cardEffects;
        }
    }
}