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

namespace DCGO.CardEffects.LM
{
    public class LM_006 : 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 for reduced cost", CanUseCondition, card);
                activateClass.SetUpActivateClass(null, ActivateCoroutine, -1, false, TrashEffectDiscription());
                cardEffects.Add(activateClass);

                string TrashEffectDiscription()
                {
                    return "[Trash] [Main] By returning 1 of your Tamers to the bottom of the deck, play this card with the play cost reduced by the play cost of the returned Tamer.";
                }

                bool CanSelectTamerCondition(Permanent permanent)
                {
                    if (CardEffectCommons.IsPermanentExistsOnOwnerBattleArea(permanent, card))
                    {
                        if (permanent.IsTamer)
                        {
                            if(!permanent.CannotReturnToLibrary(activateClass))
                                return true;
                        }
                    }

                    return false;
                }

                bool CanUseCondition(Hashtable hashtable)
                {
                    if (CardEffectCommons.IsExistOnTrash(card))
                    {
                        if (CardEffectCommons.HasMatchConditionOwnersPermanent(card, CanSelectTamerCondition))
                        {
                            if (CardEffectCommons.CanPlayAsNewPermanent(cardSource: card, payCost: false, cardEffect: activateClass))
                            {
                                return true;
                            }
                        }
                    }

                    return false;
                }

                IEnumerator ActivateCoroutine(Hashtable _hashtable)
                {
                    int reduceCost = 0;

                    if (CardEffectCommons.HasMatchConditionPermanent(CanSelectTamerCondition))
                    {
                        Permanent selectedPermanent = null;

                        int maxCount = Math.Min(1, CardEffectCommons.MatchConditionPermanentCount(CanSelectTamerCondition));

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

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

                        selectPermanentEffect.SetUpCustomMessage("Select 1 Tamer to return to bottom of deck.", "The opponent is selecting 1 Tamer to return to bottom of deck.");

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

                        IEnumerator SelectPermanentCoroutine(Permanent permanent)
                        {
                            selectedPermanent = permanent;
                            reduceCost = selectedPermanent.PlayCostJustAfterPlayed;
                            yield return null;
                        }

                        #region reduce play cost
                        IEnumerator AfterSelectTamer(List<Permanent> permanent)
                        {
                            if (card.Owner.CanReduceCost(null, card))
                                ContinuousController.instance.PlaySE(GManager.instance.GetComponent<Effects>().BuffSE); 

                            ChangeCostClass changeCostClass = new ChangeCostClass();
                            changeCostClass.SetUpICardEffect($"Play Cost -{reduceCost}", CanUseCondition1, 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));

                            bool CanUseCondition1(Hashtable hashtable)
                            {
                                return true;
                            }

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

                                return Cost;
                            }

                            bool PermanentsCondition(List<Permanent> targetPermanents)
                            {
                                if (targetPermanents == null)
                                {
                                    return true;
                                }

                                else
                                {
                                    if (targetPermanents.Count((targetPermanent) => targetPermanent != null) == 0)
                                    {
                                        return true;
                                    }
                                }

                                return false;
                            }

                            bool CardSourceCondition(CardSource cardSource)
                            {
                                return true;
                            }

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

                            bool isUpDown()
                            {
                                return true;
                            }

                        }
                        #endregion

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

            #region On Play/When Digivolving Shared

            bool CanActivateCondition(Hashtable hashtable)
            {
                if (CardEffectCommons.IsExistOnBattleArea(card))
                {
                    return true;
                }
                return false;
            }
            #endregion

            #region On Play
            if (timing == EffectTiming.OnEnterFieldAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect(card.BaseENGCardNameFromEntity, CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, -1, false, EffectDiscription());
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "[On Play] Trash the bottom 3 digivolution cards of 1 of your opponent's Digimon. Then, until the end of their turn, none of their Digimon with no digivolution cards can't attack.";
                }

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

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

                IEnumerator ActivateCoroutine(Hashtable _hashtable)
                {
                    if (CardEffectCommons.HasMatchConditionPermanent(CanSelectPermanentCondition))
                    {
                        SelectPermanentEffect selectPermanentEffect = GManager.instance.GetComponent<SelectPermanentEffect>();

                        selectPermanentEffect.SetUp(
                            selectPlayer: card.Owner,
                            canTargetCondition: CanSelectPermanentCondition,
                            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 that will trash digivolution cards.", "The opponent is selecting 1 Digimon that will trash digivolution cards.");

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

                        IEnumerator SelectPermanentCoroutine(Permanent permanent)
                        {
                            Permanent selectedPermanent = permanent;

                            yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.TrashDigivolutionCardsFromTopOrBottom(targetPermanent: selectedPermanent, trashCount: 3, isFromTop: false, activateClass: activateClass));
                        }
                    }

                    bool AttackerCondition(Permanent attacker)
                    {
                        return attacker.DigivolutionCards.Count == 0;
                    }

                    bool DefenderCondition(Permanent defender)
                    {
                        return true;
                    }

                    yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.GainCanNotAttackPlayerEffect(
                        attackerCondition: AttackerCondition,
                        defenderCondition: DefenderCondition,
                        effectDuration: EffectDuration.UntilOpponentTurnEnd,
                        activateClass: activateClass,
                        effectName: "Can't Attack"));                    
                }
            }
            #endregion

            #region When Digivolving
            if (timing == EffectTiming.OnEnterFieldAnyone)
            {
                ActivateClass activateClass = new ActivateClass();
                activateClass.SetUpICardEffect(card.BaseENGCardNameFromEntity, CanUseCondition, card);
                activateClass.SetUpActivateClass(CanActivateCondition, ActivateCoroutine, -1, false, EffectDiscription());
                cardEffects.Add(activateClass);

                string EffectDiscription()
                {
                    return "[When Digivolving] Trash the bottom 3 digivolution cards of 1 of your opponent's Digimon. Then, until the end of their turn, none of their Digimon with no digivolution cards can't attack.";
                }

                bool CanSelectPermanentCondition(Permanent permanent)
                {
                    if (CardEffectCommons.IsPermanentExistsOnOpponentBattleAreaDigimon(permanent, card))
                    {
                        if (permanent.DigivolutionCards.Count((cardSource) => !cardSource.CanNotTrashFromDigivolutionCards(activateClass)) >= 1)
                        {
                            return true;
                        }
                    }

                    return false;
                }

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

                IEnumerator ActivateCoroutine(Hashtable _hashtable)
                {
                    if (CardEffectCommons.HasMatchConditionPermanent(CanSelectPermanentCondition))
                    {
                        SelectPermanentEffect selectPermanentEffect = GManager.instance.GetComponent<SelectPermanentEffect>();

                        selectPermanentEffect.SetUp(
                            selectPlayer: card.Owner,
                            canTargetCondition: CanSelectPermanentCondition,
                            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 that will trash digivolution cards.", "The opponent is selecting 1 Digimon that will trash digivolution cards.");

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

                        IEnumerator SelectPermanentCoroutine(Permanent permanent)
                        {
                            Permanent selectedPermanent = permanent;

                            yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.TrashDigivolutionCardsFromTopOrBottom(targetPermanent: selectedPermanent, trashCount: 3, isFromTop: false, activateClass: activateClass));
                        }
                    }

                    bool DefenderCondition(Permanent defender)
                    {
                        return true;
                    }

                    foreach (Permanent permanent in card.Owner.Enemy.GetBattleAreaDigimons())
                    {
                        if (permanent.DigivolutionCards.Count == 0)
                        {
                            yield return ContinuousController.instance.StartCoroutine(CardEffectCommons.GainCanNotAttack(
                                targetPermanent: permanent,
                                defenderCondition: DefenderCondition,
                                effectDuration: EffectDuration.UntilOpponentTurnEnd,
                                activateClass: activateClass,
                                effectName: "Can't Attack"));
                        }
                    }
                }
            }
            #endregion

            return cardEffects;
        }
    }
}