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

// Airdramon
namespace DCGO.CardEffects.EX9
{
    public class EX9_025 : CEntity_Effect
    {
        public override List<ICardEffect> CardEffects(EffectTiming timing, CardSource card)
        {
            List<ICardEffect> cardEffects = new List<ICardEffect>();

            #region Static Effects

            #region Alternative Digivolution Cost

            if (timing == EffectTiming.None)
            {
                bool PermanentCondition(Permanent targetPermanent)
                {
                    if (targetPermanent.TopCard.IsLevel3)
                    {
                        if (targetPermanent.TopCard.EqualsTraits("DM"))
                        {
                            return true;
                        }
                    }
                    return false;
                }

                cardEffects.Add(CardEffectFactory.AddSelfDigivolutionRequirementStaticEffect(
                    permanentCondition: PermanentCondition,
                    digivolutionCost: 2,
                    ignoreDigivolutionRequirement: false,
                    card: card,
                    condition: null)
                );
            }

            #endregion

            #region Training

            if (timing == EffectTiming.OnDeclaration)
            {
                cardEffects.Add(CardEffectFactory.TrainingEffect(card: card));
            }

            #endregion

            #endregion

            #region When Attacking

            if (timing == EffectTiming.OnAllyAttack)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect($"By Placing top card FD as bottom source card, give -2000 DP to 1 digimon for each FD source", CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, 1, true, EffectDiscription());
                activateClass.SetHashString("EX9_025_WA");
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "[When Attacking] [Once Per Turn] By placing your deck's top card face down as this Digimon's bottom digivolution card, to 1 of your opponent's Digimon, give -2000 DP for the turn for each of this Digimon's face-down digivolution cards.";
                }

                bool CanSelectOpponentsDigimon(Permanent permanent)
                {
                    return CardEffectCommons.IsPermanentExistsOnOpponentBattleAreaDigimon(permanent, card);
                }

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

                bool CanActivateCondition(Hashtable hashtable)
                {
                    if (CardEffectCommons.IsExistOnBattleAreaDigimon(card))
                    {
                        if (card.Owner.LibraryCards.Count >= 1)
                        {
                            return true;
                        }
                    }
                    return false;
                }

                IEnumerator ActivateCoroutine(Hashtable hashtable)
                {
                    Permanent thisPermanent = card.PermanentOfThisCard();
                    CardSource selectedCard = card.Owner.LibraryCards[0];
                    yield return ContinuousController.instance.StartCoroutine(thisPermanent.AddDigivolutionCardsBottom(new List<CardSource>() { selectedCard }, activateClass, isFacedown: true));

                    if (thisPermanent.DigivolutionCards.Contains(selectedCard))
                    {
                        if (CardEffectCommons.HasMatchConditionPermanent(CanSelectOpponentsDigimon))
                        {
                            Permanent selectedPermanent = null;

                            int DPMinus() => thisPermanent.DigivolutionCards.Filter(x => x.IsFlipped).Count * 2000;

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

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

                            selectPermanentEffect.SetUpCustomMessage($"Select 1 Digimon to give -{DPMinus()}.", $"The opponent is selecting 1 Digimon to give -{DPMinus()}.");

                            yield return ContinuousController.instance.StartCoroutine(selectPermanentEffect.Activate());

                            IEnumerator SelectPermanentCoroutine(Permanent permanent)
                            {
                                selectedPermanent = permanent;

                                yield return null;
                            }

                            if (selectedPermanent != null)
                            {
                                yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.ChangeDigimonDP(
                                    targetPermanent: selectedPermanent,
                                    changeValue: -DPMinus(),
                                    effectDuration: EffectDuration.UntilEachTurnEnd,
                                    activateClass: activateClass));
                            }
                        }
                    }
                }
            }

            #endregion

            #region ESS

            if (timing == EffectTiming.WhenPermanentWouldBeDeleted)
            {
                cardEffects.Add(CardEffectFactory.BarrierSelfEffect(isInheritedEffect: true, card: card, condition: null));
            }

            #endregion

            return cardEffects;
        }
    }
}