using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEditor.PackageManager;
using UnityEngine;



namespace PrizeSystem
{
    /// <summary>
    /// Система управления выдачей призов и ведения статистики игры.
    /// Отвечает за процесс выдачи призов, подсчет запусков и наград.
    /// </summary>
    public class PrizeSystemManager : MonoBehaviour
    {
        [SerializeField] AudioClip prizeErrorSound;

        [SerializeField] bool SoundNotification = true;
        [SerializeField] List<AudioClip> PrizeNotificationSounds;

        [SerializeField] Notification prizeNotification;
        [SerializeField] VitrinaPanel vitrinaPanel;


        public static event Action<List<Prize>> PrizesChanged;
        public static event Action<bool> OnErrorStateChanged;

        private static PrizeSystemManager instance;
        private static bool prizing = false;

        public static List<Prize> cachedPrizes { get; private set; }
        //Прописать тут очереди.
        private static Queue<QrPrize> qrPrizes;
        private static Queue<VitrinaPrize> vitrinaPrizes;

        public static bool HasQrPrizeToGive => qrPrizes.Count > 0;
        public static bool HasVitrinaPrizeToGive => vitrinaPrizes.Count > 0;

        public static bool ErrorState => PlayerPrefs.GetInt(PrefsKeyVault.PRIZING_ERROR_REGISTRED, 0) == 1;




        //=========================== PUBLIC API ===========================//
        public static Prize GetFirstNonEmptyPrizeAfter(Prize referencePrize)
        {
            if (referencePrize == null) return null;

            int currentPrizeIndex = cachedPrizes.IndexOf(referencePrize);
            if (currentPrizeIndex < 0) return null;

            for (int i = currentPrizeIndex + 1; i < cachedPrizes.Count; i++)
            {
                var selectedPrize = cachedPrizes[i];
                if (selectedPrize is not EmptyPrize)
                {
                    return selectedPrize;
                }
            }
            return null;
        }

        public void Initialize()
        {
            instance = this;

            qrPrizes = new();
            vitrinaPrizes = new();
        }

        public static QrPrize DequeueQrPrize() => HasQrPrizeToGive ? qrPrizes.Dequeue() : null;
        public static VitrinaPrize DequeueVitrinaPrize() => HasVitrinaPrizeToGive ? vitrinaPrizes.Dequeue() : null;


        public static void SetPrizesCache(List<Prize> prizes)
        {
            cachedPrizes = prizes;
            PrizesChanged?.Invoke(prizes);
        }
        public static void GivePrize(Prize prize)
        {
            if (prize == null)
            {
                Debug.Log("Приз Null"); return;
            }
            //Если призы отключены в принципе, то не выдаем.
            bool prizingEnabled = SettingsManager.GetBool(SettingKey.PRIZING);
            if (!prizingEnabled) return;



            Debug.Log($"Поступил заказ приз: {prize.Body}");


            if (prize is EmptyPrize)
            {
                Debug.Log("Пустой приз. Возврат.");
                return;
            }
            else if (prize is CountablePrize countablePrize)
            {
                instance.StartCoroutine(instance.PrizingProcess(countablePrize.Amount, countablePrize.Type));
            }
            else if (prize is VitrinaPrize vitrinaPrize)
            {
                vitrinaPrizes.Enqueue(vitrinaPrize);
            }
            else if (prize is QrPrize qrPrize)
            {
                qrPrizes.Enqueue(qrPrize);
            }
        }

        //=========================== privates ===========================//
        #region Приватные методы
        //private string StartHopperCommand => ComWrapper.BoardVersion switch { 1 => "303", 2 => "301", _ => "303" };
        //private string StopHopperCommand => ComWrapper.BoardVersion switch { 1 => "302", 2 => "300", _ => "302" };
        private string StartHopperCommand => "303"; 
        private string StopHopperCommand => "302";
        private IEnumerator PrizingProcess(int amount, CountablePrizeType Type)
        {
            if (prizing)
            {
                Debug.LogError("Уже идет выдача приза. Повторная выдача отключена");
                yield break;
            }
            prizing = true;

            Debug.Log($"Выдача приза {Type}. Количество: {amount}");
            bool atLeastOnePrize = false;

            for (int i = 0; i < amount; i++)
            {
                bool noPrizWhenError = SettingsManager.GetBool(SettingKey.PRIZING_WHEN_ERROR);
                bool errorRegistred = PlayerPrefs.GetInt(PrefsKeyVault.PRIZING_ERROR_REGISTRED, 0) == 1;
                if (errorRegistred && noPrizWhenError) yield break;

                Debug.Log($"Включаю мотор хоппера: {StartHopperCommand}");
                ComWrapper.Send(StartHopperCommand);//включаем мотор

                PlayerPrefs.SetInt("PrizeGivenBuffer", 0);//подготовка буфера
                Debug.Log($"Буфер подготовлен. Значение: {PlayerPrefs.GetInt("PrizeGivenBuffer")}");

                float startTime = Time.time;
                bool success = false;
                float timeout = 10;
                while (Time.time - startTime < timeout)
                {
                    if (PlayerPrefs.GetInt("PrizeGivenBuffer", 0) == 1)
                    {
                        Debug.Log($"Считан приз. Значение буфера {PlayerPrefs.GetInt("PrizeGivenBuffer")}");
                        success = true;
                        break;
                    }
                    yield return null;
                }

                Debug.Log($"Выключаю мотор: {StopHopperCommand}");
                ComWrapper.Send(StopHopperCommand);
                Debug.Log("Закончил. Успех: " + success);

                if (success)
                {
                    //контроль остатков
                    int prizesCount = PlayerPrefs.GetInt(PrefsKeyVault.PRIZES_AVAILABLE);
                    prizesCount = Mathf.Clamp(prizesCount - 1, 0, 9999);
                    PlayerPrefs.SetInt(PrefsKeyVault.PRIZES_AVAILABLE, prizesCount);

                    //Счетчики
                    IncreasePrizeCounters(Type);

                    //хотя бы что то успешно выпало
                    atLeastOnePrize = true;
                }
                else
                {
                    SetPrizingError(true);
                    SoundManager.instance.playClip(prizeErrorSound);
                }
            }
            if (atLeastOnePrize)
            {
                NotificationSystem.instance.Notificate(prizeNotification);
                SoundNotificationIfNeeds();
            }

            prizing = false;
        }


        public static void SetPrizingError(bool error)
        {
            PlayerPrefs.SetInt(PrefsKeyVault.PRIZING_ERROR_REGISTRED, error ? 1 : 0);
            OnErrorStateChanged?.Invoke(error);
        }

        void IncreasePrizeCounters(CountablePrizeType Type)
        {
            string prizeCounterKey = Type switch
            {
                CountablePrizeType.Marbles => PrefsKeyVault.MARBLES_GIVEN_COUNTER,
                CountablePrizeType.Hopper => PrefsKeyVault.HOPPER_GIVEN_COUNTER,
                CountablePrizeType.Hopper2 => PrefsKeyVault.HOPPER_GIVEN_COUNTER,
                CountablePrizeType.Ticket => PrefsKeyVault.TICKET_GIVEN_COUNTER,
                _ => "none"
            };

            string prizeCounterKeyNullable = prizeCounterKey + "Nullable";

            PlayerPrefs.SetInt(prizeCounterKey, PlayerPrefs.GetInt(prizeCounterKey, 0) + 1);
            PlayerPrefs.SetInt(prizeCounterKeyNullable, PlayerPrefs.GetInt(prizeCounterKeyNullable, 0) + 1);
        }

        public static void ResetPrizeCounters()
        {
            PlayerPrefs.SetInt(PrefsKeyVault.HOPPER_GIVEN_COUNTER + "Nullable", 0);
            PlayerPrefs.SetInt(PrefsKeyVault.MARBLES_GIVEN_COUNTER + "Nullable", 0);
            PlayerPrefs.SetInt(PrefsKeyVault.TICKET_GIVEN_COUNTER + "Nullable", 0);
            PlayerPrefs.SetInt(PrefsKeyVault.SPECIAL_GIVEN_COUNTER + "Nullable", 0);
        }

        public static string GetPrizesCounterNullableString()
        {
            StringBuilder sb = new();

            sb.Append($"Х: {PlayerPrefs.GetInt(PrefsKeyVault.HOPPER_GIVEN_COUNTER + "Nullable", 0)}. ");
            sb.Append($"Т: {PlayerPrefs.GetInt(PrefsKeyVault.TICKET_GIVEN_COUNTER + "Nullable", 0)}. ");
            sb.Append($"М: {PlayerPrefs.GetInt(PrefsKeyVault.MARBLES_GIVEN_COUNTER + "Nullable", 0)}. ");
            sb.Append($"С: {PlayerPrefs.GetInt(PrefsKeyVault.SPECIAL_GIVEN_COUNTER + "Nullable", 0)}. ");

            return sb.ToString();
        }

        public static string GetPrizesCounterString()
        {
            StringBuilder sb = new();

            sb.Append($"Х: {PlayerPrefs.GetInt(PrefsKeyVault.HOPPER_GIVEN_COUNTER, 0)}. ");
            sb.Append($"Т: {PlayerPrefs.GetInt(PrefsKeyVault.TICKET_GIVEN_COUNTER, 0)}. ");
            sb.Append($"М: {PlayerPrefs.GetInt(PrefsKeyVault.MARBLES_GIVEN_COUNTER, 0)}. ");
            sb.Append($"С: {PlayerPrefs.GetInt(PrefsKeyVault.SPECIAL_GIVEN_COUNTER, 0)}. ");

            return sb.ToString();
        }

        private void SoundNotificationIfNeeds()
        {
            if (!SoundNotification) return;
            if (PrizeNotificationSounds == null || PrizeNotificationSounds.Count == 0) return;

            int random = UnityEngine.Random.Range(0, PrizeNotificationSounds.Count);
            AudioClip notification = PrizeNotificationSounds[random];
            SoundManager.instance.playClip(notification);
        }
        #endregion
    }
}