using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Photon.Pun;
using System;
using System.Linq;
using UnityEngine.UI;

public class AttackProcess : MonoBehaviourPunCallbacks
{
    public Permanent AttackingPermanent { get; private set; } = null;
    public Permanent DefendingPermanent { get; private set; } = null;
    public int AttackCount { get; set; } = 0;
    public bool IsAttacking { get; set; } = false;
    public bool HasDefender { get; set; } = false;
    public bool IsBlocking { get; set; } = false;
    public CardSource SecurityDigimon { get; set; } = null;
    public bool DoSecurityCheck { get; set; } = false;
    public bool IsEndAttack { get; set; } = false;

    public Hashtable EffectHashtable { get; set; } = null;

    public Hashtable CounterEffectHashtable { get; set; } = null;
    public AttackState State { get; set; } = AttackState.None;
    public enum AttackState
    {
        None,
        Counter,
        Block,
        Battle,
        End,
        CleanUp
    }

    public bool ActiveAttack()
    {
        return State != null && State != AttackState.None;
    }

    public IEnumerator ProcessNextState()
    {
        switch (State)
        {
            case AttackState.Counter:
                yield return ContinuousController.instance.StartCoroutine(CounterTiming());
                break;
            case AttackState.Block:
                yield return ContinuousController.instance.StartCoroutine(BlockTiming());
                break;
            case AttackState.Battle:
                yield return ContinuousController.instance.StartCoroutine(DetermineAttackOutcome());
                break;
            case AttackState.End:
                yield return ContinuousController.instance.StartCoroutine(EndAttack());
                break;
            case AttackState.CleanUp:
                yield return ContinuousController.instance.StartCoroutine(Cleanup());
                break;
            default:
                yield break;
        }
    }

    void SetAttackerDefender(Permanent attackingPermanent, Permanent defendingPermanent)
    {
        AttackingPermanent = attackingPermanent;
        DefendingPermanent = defendingPermanent;

        if (defendingPermanent != null)
            HasDefender = true;
    }

    public IEnumerator Attack(Permanent attackingPermanent, Permanent defendingPermanent, ICardEffect attackEffect, bool withoutTap = false, Func<IEnumerator> beforeOnAttackCoroutine = null)
    {
        if (IsAttacking)
        {
            if (beforeOnAttackCoroutine != null)
            {
                yield return ContinuousController.instance.StartCoroutine(beforeOnAttackCoroutine());
            }

            yield break;
        }

        AttackingPermanent = null;
        DefendingPermanent = null;

        DoSecurityCheck = false;
        IsBlocking = false;
        SecurityDigimon = null;
        IsAttacking = false;
        HasDefender = false;
        IsEndAttack = false;
        CounterEffectHashtable = null;

        SetAttackerDefender(attackingPermanent, defendingPermanent);

        EffectHashtable = CardEffectCommons.OnAttackCheckHashtableOfPermanent(AttackingPermanent, attackEffect);
        CounterEffectHashtable = CardEffectCommons.OnAttackCheckHashtableOfPermanent(new Permanent(AttackingPermanent.cardSources), attackEffect);

        IsAttacking = true;

        GManager.instance.turnStateMachine.IsSelecting = true;

        // force to end attack
        if (IsEndAttack)
        {
            State = AttackState.End;

            yield break;
        }

        #region Attack Process
        if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(AttackingPermanent))
        {
            AttackCount++;

            GManager.instance.turnStateMachine.IsSelecting = true;

            if (DefendingPermanent != null)
            {
                if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
                {
                    DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                    DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
                    GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.securityObject.securityBreakGlass.gameObject.SetActive(false);
                }
            }

            else
            {
                if (GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.SecurityCards.Count >= 1)
                {
                    GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.securityObject.securityBreakGlass.ShowBlueMatarial();
                }
            }

            AttackingPermanent.ShowingPermanentCard.SetOrangeOutline();
            AttackingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);

            // add log
            string log = $"\nAttack:\n{AttackingPermanent.TopCard.BaseENGCardNameFromEntity}({AttackingPermanent.TopCard.CardID})";

            if (DefendingPermanent != null)
            {
                if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
                    log += $"\n«\n{DefendingPermanent.TopCard.BaseENGCardNameFromEntity}({DefendingPermanent.TopCard.CardID})\n";
            }

            else
            {
                log += $"\n«\nSecurity\n";
            }

            PlayLog.OnAddLog?.Invoke(log);

            // suspend
            if (!withoutTap)
            {
                Hashtable attackerTapHashtable = new Hashtable()
                {
                    {"IsAttack", true}
                };
                yield return ContinuousController.instance.StartCoroutine(new SuspendPermanentsClass(
                    new List<Permanent>() { AttackingPermanent },
                    attackerTapHashtable).Tap());
            }

            // target arrow
            if (DefendingPermanent == null)
            {
                yield return GManager.instance.OnTargetArrow(
                        AttackingPermanent.PermanentFrame.GetLocalCanvasPosition() + AttackingPermanent.TopCard.Owner.playerUIObjectParent.localPosition,
                        GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.SecurityAttackLocalCanvasPosition + GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.playerUIObjectParent.localPosition,
                        null,
                        null);
            }
            else
            {
                if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
                {
                    yield return GManager.instance.OnTargetArrow(
                        AttackingPermanent.PermanentFrame.GetLocalCanvasPosition() + AttackingPermanent.TopCard.Owner.playerUIObjectParent.localPosition,
                        DefendingPermanent.PermanentFrame.GetLocalCanvasPosition() + DefendingPermanent.TopCard.Owner.playerUIObjectParent.localPosition,
                        null,
                        null);
                }
            }

            // callback that is processed before [On Attack]
            if (beforeOnAttackCoroutine != null)
            {
                yield return ContinuousController.instance.StartCoroutine(beforeOnAttackCoroutine());
            }

            // trigger [On Attack] effect
            yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing.StackSkillInfos(
                EffectHashtable,
                EffectTiming.OnAllyAttack));

            GManager.instance.turnStateMachine.IsSelecting = true;

            if (AttackingPermanent.TopCard != null)
            {
                AttackingPermanent.ShowingPermanentCard.SetOrangeOutline();
                AttackingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
            }

            if (DefendingPermanent != null)
            {
                if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
                {
                    DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                    DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
                }
            }

            GManager.instance.turnStateMachine.IsSelecting = true;

            // force to end attack
            if (IsEndAttack)
            {
                State = AttackState.End;

                yield break;
            }

            if (AttackingPermanent.TopCard != null)
            {
                AttackingPermanent.ShowingPermanentCard.SetOrangeOutline();
                AttackingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
            }

            if (DefendingPermanent != null)
            {
                if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
                {
                    DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                    DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
                }
            }
            State = AttackState.Counter;
        }    
        else
        {
            if (beforeOnAttackCoroutine != null)
            {
                yield return ContinuousController.instance.StartCoroutine(beforeOnAttackCoroutine());
            }
            State = AttackState.End;
        }
        #endregion
    }

    IEnumerator CounterTiming()
    {
        // force to end attack
        if (IsEndAttack)
        {
            State = AttackState.End;

            yield break;
        }
        
        // trigger effects when counter timing (except [Counter] effects)
        yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing_CutIn.StackSkillInfos(
            CounterEffectHashtable,
            EffectTiming.OnCounterTiming,
            cardEffect => !cardEffect.IsCounterEffect));

        // activate cutin effects
        yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing_CutIn.TriggeredSkillProcess(true, null));

        GManager.instance.turnStateMachine.IsSelecting = true;

        // force to end attack
        if (IsEndAttack)
        {
            State = AttackState.End;

            yield break;
        }

        // trigger effects when counter timing ([Counter] effects)
        yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing_CutIn.StackSkillInfos(
            CounterEffectHashtable,
            EffectTiming.OnCounterTiming,
            cardEffect => cardEffect.IsCounterEffect));

        bool HasCounterEffect(List<SkillInfo> skillInfos, SkillInfo skillInfo)
        {
            return skillInfos.Count((skillInfo1) => skillInfo1.CardEffect.IsCounterEffect) >= 1;
        }

        // activate cutin effects
        yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing_CutIn.TriggeredSkillProcess(true, HasCounterEffect));

        GManager.instance.turnStateMachine.IsSelecting = true;

        // force to end attack
        if (IsEndAttack || AttackingPermanent.TopCard == null || !AttackingPermanent.IsDigimon)
        {
            State = AttackState.End;

            yield break;
        }

        AttackingPermanent.ShowingPermanentCard.SetOrangeOutline();
        AttackingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);

        if (DefendingPermanent != null)
        {
            if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
            {
                DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
            }
        }
        State = AttackState.Block;
    }

    IEnumerator BlockTiming()
    {
        // force to end attack
        if (IsEndAttack || AttackingPermanent.TopCard == null || !AttackingPermanent.IsDigimon)
        {
            State = AttackState.End;

            yield break;
        }
        
        #region select blocker
        bool CanSelectBlockerCondition(Permanent permanent)
        {
            return CardEffectCommons.IsPermanentExistsOnOpponentBattleAreaDigimon(permanent, AttackingPermanent.TopCard)
                && permanent != DefendingPermanent
                && permanent.HasBlocker 
                && permanent.CanBlock(AttackingPermanent);
        }

        if (AttackingPermanent.TopCard.Owner.Enemy.GetBattleAreaDigimons().Count(CanSelectBlockerCondition) >= 1)
        {
            int maxCount = 1;

            Permanent selectedPermanent = null;

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

            selectPermanentEffect.SetUp(
                selectPlayer: AttackingPermanent.TopCard.Owner.Enemy,
                canTargetCondition: CanSelectBlockerCondition,
                canTargetCondition_ByPreSelecetedList: null,
                canEndSelectCondition: null,
                maxCount: maxCount,
                canNoSelect: (!IsBlocking),
                canEndNotMax: false,
                selectPermanentCoroutine: SelectPermanentCoroutine,
                afterSelectPermanentCoroutine: null,
                mode: SelectPermanentEffect.Mode.Custom,
                cardEffect: null);

            selectPermanentEffect.SetUpCustomMessage("Select 1 Digimon that will block.", "The opponent is selecting 1 Digimon that will block.");
            
            if(!IsBlocking)
                selectPermanentEffect.SetUpCustomBackButtonMessage("Not Block");

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

            IEnumerator SelectPermanentCoroutine(Permanent permanent)
            {
                selectedPermanent = permanent;

                yield return null;
            }

            if (selectedPermanent != null)
            {
                yield return ContinuousController.instance.StartCoroutine(SwitchDefender(null, true, selectedPermanent));
            }
        }
        #endregion

        GManager.instance.turnStateMachine.IsSelecting = true;

        //end attack
        if (IsEndAttack || AttackingPermanent.TopCard == null || !AttackingPermanent.IsDigimon)
        {
            State = AttackState.End;

            yield break;
        }

        AttackingPermanent.ShowingPermanentCard.SetOrangeOutline();
        AttackingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);

        if (DefendingPermanent != null)
        {
            if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent))
            {
                DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
            }
        }
        State = AttackState.Battle;
    }

    IEnumerator DetermineAttackOutcome()
    {
        //end attack
        if (IsEndAttack || AttackingPermanent.TopCard == null || !AttackingPermanent.IsDigimon)
        {
            State = AttackState.End;

            yield break;
        }

        #region there is no Defending Permanent
        if (DefendingPermanent == null)
        {
            if (AttackingPermanent.Strike >= 1)
            {
                //if there is no security, end the game
                if (AttackingPermanent.TopCard.Owner.Enemy.SecurityCards.Count == 0)
                {
                    GManager.instance.turnStateMachine.EndGame(AttackingPermanent.TopCard.Owner, false);
                    yield break;
                }
            }

            DoSecurityCheck = true;
        }
        #endregion

        #region there is Defending Permanent
        else if (CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(DefendingPermanent) && CardEffectCommons.IsPermanentExistsOnBattleAreaDigimon(AttackingPermanent))
        {
            DefendingPermanent.TopCard.Owner.securityObject.securityBreakGlass.gameObject.SetActive(false);

            DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
            DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);

            // battle
            IBattle battle = new IBattle(AttackingPermanent: AttackingPermanent, DefendingPermanent: DefendingPermanent, null);
            yield return ContinuousController.instance.StartCoroutine(battle.Battle());
            
            yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing.TriggeredSkillProcess(true, null));
            GManager.instance.turnStateMachine.IsSelecting = true;
        }
        #endregion

        if (AttackingPermanent.TopCard == null)
        {
            State = AttackState.End;

            yield break;
        }

        #region do security check
        if (DoSecurityCheck && AttackingPermanent.TopCard.Owner.Enemy.SecurityCards.Count >= 1)
        {
            //security check process
            yield return ContinuousController.instance.StartCoroutine(new ISecurityCheck(
                AttackingPermanent: AttackingPermanent,
                player: GManager.instance.turnStateMachine.gameContext.NonTurnPlayer).SecurityCheck());
        }
        #endregion
        State = AttackState.End;
    }



    #region End Attack
    public IEnumerator EndAttack()
    {
        IsEndAttack = true;

        // [On End Attack] effect
        if (AttackingPermanent != null && AttackingPermanent.TopCard != null)
        {
            yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing.StackSkillInfos(EffectHashtable, EffectTiming.OnEndAttack));
        }

        State = AttackState.CleanUp;
    }

    IEnumerator Cleanup()
    {
        #region reset effects which continues until the end of attack
        foreach (Player player in GManager.instance.turnStateMachine.gameContext.Players_ForTurnPlayer)
        {
            foreach (Permanent permanent in player.GetFieldPermanents())
            {
                permanent.UntilEndAttackEffects = new List<Func<EffectTiming, ICardEffect>>();
            }
        }
        #endregion

        GManager.instance.turnStateMachine.IsSelecting = true;
        #endregion

        GManager.instance.OffTargetArrow();

        DoSecurityCheck = false;
        IsBlocking = false;
        SecurityDigimon = null;
        IsAttacking = false;
        IsEndAttack = false;
        CounterEffectHashtable = null;
        State = AttackState.None;

        yield return null;
    }

    public IEnumerator SwitchDefender(ICardEffect cardEffect, bool isBlock, Permanent newDefendingPermanent)
    {
        if (AttackingPermanent == null) yield break;
        if (AttackingPermanent.TopCard == null) yield break;
        if (newDefendingPermanent != null && newDefendingPermanent.TopCard == null) yield break;
        if (!AttackingPermanent.CanSwitchAttackTarget) yield break;

        Permanent oldDefendingPermanent = DefendingPermanent;

        DefendingPermanent = newDefendingPermanent;

        IsBlocking = isBlock;

        if (DefendingPermanent != null)
        {
            if (DefendingPermanent.ShowingPermanentCard != null)
            {
                DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
            }
        }

        Hashtable hashtable = new Hashtable(){
                {"AttackingPermanent", AttackingPermanent},
                {"DefendingPermanent", DefendingPermanent},
                {"CardEffect", cardEffect}
                };

        if (isBlock)
        {
            hashtable.Add("IsBlock", isBlock);
        }

        if (isBlock)
        {
            if (DefendingPermanent != null)
            {
                // add log
                string log1 = $"\nBlock:\n{DefendingPermanent.TopCard.BaseENGCardNameFromEntity}({DefendingPermanent.TopCard.CardID})\n";

                PlayLog.OnAddLog?.Invoke(log1);

                // suspend
                yield return ContinuousController.instance.StartCoroutine(new SuspendPermanentsClass(new List<Permanent>() { DefendingPermanent }, hashtable).Tap());

                // the effects when blocking
                yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing.StackSkillInfos(
                    hashtable,
                    EffectTiming.OnBlockAnyone));
            }
        }

        if (AttackingPermanent != null)
        {
            if (AttackingPermanent.TopCard == null)
            {
                IsBlocking = false;
                yield break;
            }
        }

        if (DefendingPermanent != null)
        {
            if (DefendingPermanent.TopCard == null)
            {
                IsBlocking = false;
                yield break;
            }
        }

        if (AttackingPermanent != null)
        {
            // target arrow
            for (int i = 0; i < 3; i++)
            {
                GManager.instance.OffTargetArrow();

                yield return null;
            }

            if (DefendingPermanent != null)
            {
                DefendingPermanent.ShowingPermanentCard.SetOrangeOutline();
                DefendingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);

                yield return GManager.instance.OnTargetArrow(
                    AttackingPermanent.PermanentFrame.GetLocalCanvasPosition() + AttackingPermanent.TopCard.Owner.playerUIObjectParent.localPosition,
                    DefendingPermanent.PermanentFrame.GetLocalCanvasPosition() + DefendingPermanent.TopCard.Owner.playerUIObjectParent.localPosition,
                    null,
                    null);
            }

            else
            {
                yield return GManager.instance.OnTargetArrow(
                                    AttackingPermanent.PermanentFrame.GetLocalCanvasPosition() + AttackingPermanent.TopCard.Owner.playerUIObjectParent.localPosition,
                                    GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.SecurityAttackLocalCanvasPosition + GManager.instance.turnStateMachine.gameContext.NonTurnPlayer.playerUIObjectParent.localPosition,
                                    null,
                                    null);
            }

            AttackingPermanent.ShowingPermanentCard.SetOrangeOutline();
            AttackingPermanent.ShowingPermanentCard.Outline_Select.gameObject.SetActive(true);
        }

        if (newDefendingPermanent != oldDefendingPermanent)
        {
            // the effects when attack target switched
            yield return ContinuousController.instance.StartCoroutine(GManager.instance.autoProcessing.StackSkillInfos(
                hashtable,
                EffectTiming.OnAttackTargetChanged));
        }
    }
}