#nullable enable
using Best.HTTP;
using Cysharp.Threading.Tasks;
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using UnityEngine;
using UVC.Data.Core;
using UVC.Data.Http;
using UVC.Factory.Playback.UI;
using UVC.Util;
namespace UVC.Factory.Playback
{
    /// <summary>
    /// Playback 관련 서비스 클래스입니다.
    /// - 싱글턴 패턴으로 사용합니다.
    /// - 재생 데이터 요청, 다운로드, 시간 스케일 조정 등 주요 기능을 제공합니다.
    /// 
    /// <example>
    /// <code>
    /// // 재생 시작 예시
    /// var itemData = new UIPlaybackListItemData { date = "2024-07-29", time = "13", sqlFileName = "2024-07-29_13.sqlite" };
    /// await PlaybackService.Instance.StartAsync(itemData);
    /// 
    /// // 재생 목록 데이터 요청 예시
    /// var data = await PlaybackService.Instance.RequestDataAsync();
    /// 
    /// // 재생 종료 예시
    /// PlaybackService.Instance.Exit();
    /// </code>
    /// </example>
    /// </summary>
    public class PlaybackService
    {
        #region Singleton
        // 싱글턴 인스턴스. PlaybackService.Instance로 접근합니다.
        private static readonly PlaybackService instance = new PlaybackService(new PlaybackRepository());
        public static PlaybackService Instance => instance;
        static PlaybackService() { }
        #endregion
        // 재생 데이터가 저장되는 폴더 경로입니다.
        public static readonly string PlaybackFolderPath = Path.Combine(Application.persistentDataPath, "playback");//streamingAssetsPath, "playback"); appData 폴더로 변경

        private readonly PlaybackRepository repository;

        private string date;
        private string time;
        private string fileName;

        public Action OnExitPlayback;

        private float timeScale = 1.0f;
        /// <summary>
        /// 재생 시간 스케일(배속)입니다. 1.0f가 기본입니다.
        /// </summary>
        /// <example>
        /// <code>
        /// // 재생 속도를 2배로 변경
        /// PlaybackService.Instance.TimeScale = 2.0f;
        /// </code>
        /// </example>
        public float TimeScale
        {
            get => timeScale;
            internal set
            {
                if (value < 1f) value = 1f;
                if (timeScale != value)
                {
                    timeScale = value;
                    //Time.timeScale = timeScale;
                    OnChangeTimeScale?.Invoke(timeScale);
                }
            }
        }

        public Action<float> OnChangeTimeScale;

        /// <summary>
        /// 생성자. 일반적으로 직접 호출하지 않고 싱글턴 인스턴스를 사용합니다.
        /// </summary>
        public PlaybackService(PlaybackRepository repository)
        {
            this.repository = repository;
        }

        /// <summary>
        /// 서버에서 재생 가능한 날짜별 데이터 목록을 비동기로 요청합니다.
        /// </summary>
        /// <returns>성공 시 날짜별 재생 목록 딕셔너리, 실패 시 null</returns>
        /// <example>
        /// <code>
        /// var data = await PlaybackService.Instance.RequestDataAsync();
        /// if (data != null)
        /// {
        ///     foreach (var date in data.Keys)
        ///     {
        ///         Debug.Log($"날짜: {date}");
        ///     }
        /// }
        /// </code>
        /// </example>
        public async UniTask<Dictionary<string, Dictionary<string, string>>?> RequestDataAsync()
        {
            Dictionary<string, Dictionary<string, string>>? data = await repository.RequestPlaybackDateList();
            return data;
        }

        /// <summary>
        /// 재생을 위한 기본 정보 데이터를 비동기로 처리합니다.
        /// </summary>
        /// <param name="date">날짜(예: "2024-07-29")</param>
        /// <param name="time">시간(예: "13")</param>
        /// <param name="fileName">파일명(예: "2024-07-29_13.sqlite")</param>
        /// <param name="minute">분(기본값: "00")</param>
        /// <param name="second">초(기본값: "00")</param>
        /// <example>
        /// <code>
        /// await PlaybackService.Instance.DispatchBaseInfoData("2024-07-29", "13", "2024-07-29_13.sqlite");
        /// </code>
        /// </example>
        public async UniTask DispatchBaseInfoData(string date, string time, string fileName, string minute = "00", string second = "00")
        {
            await UniTask.RunOnThreadPool(async () =>
            {
                //헝가리 시간임
                this.date = date;
                this.time = time;
                this.fileName = fileName;
                DateTime dateTime = DateTimeUtil.UtcParse($"{date}T{int.Parse(time).ToString("00")}:{minute}:{second}.000Z");
                string formatTime = DateTimeUtil.FormatTime(dateTime);
                //baseInfo 가져오기
                List <PlaybackSQLiteDataEntity> list = await repository.SelectBySecondBaseInfo(date, fileName, formatTime);
                if (list.Count > 0)
                {
                    HttpRequestConfig httpRequestConfig = new HttpRequestConfig("");
                    httpRequestConfig.SetUpdatedDataOnly(true);
                    httpRequestConfig.SetSplitResponseByKey(true);
                    httpRequestConfig.AddSplitConfig("AGV", DataMapperValidator.Get("AGV"));
                    httpRequestConfig.AddSplitConfig("ALARM", DataMapperValidator.Get("ALARM"));
                    foreach (var item in list)
                    {
                        HttpDataProcessor.ProcessSplitResponse(httpRequestConfig, item.data);
                    }
                }
            });
        }

        /// <summary>
        /// 실시간 재생 데이터(특정 초 단위)를 비동기로 처리합니다.
        /// </summary>
        /// <param name="second">0 ~ 3600 (초 단위)</param>
        /// <param name="speed">재생 속도</param>
        /// <example>
        /// <code>
        /// await PlaybackService.Instance.DispatchRealTimeData(120, 1); // 120초(2분) 위치 데이터 처리
        /// </code>
        /// </example>
        public async UniTask DispatchRealTimeData(int second, int speed)
        {
            await UniTask.RunOnThreadPool(async () =>
            {
                int newSecond = second;
                if (newSecond > 36000) newSecond = 36000;
                //utc 시간으로 변환
                DateTime dateTime = DateTimeUtil.UtcParse($"{date}T{int.Parse(time).ToString("00")}:00:00.000Z").AddSeconds(newSecond);//.Add(-DateTimeUtil.UtcKoreaGap);
                string formatTime = DateTimeUtil.FormatTime(dateTime);

                List<PlaybackSQLiteDataEntity> list = await repository.SelectBySecondAsync(date, fileName, formatTime, 1);
                //Debug.Log($"DispatchRealTimeData {date} {time} {formatTime} {newSecond} {list.Count}");
                if (list.Count > 0)
                {
                    HttpRequestConfig httpRequestConfig = new HttpRequestConfig("");
                    httpRequestConfig.SetUpdatedDataOnly(true);
                    httpRequestConfig.SetSplitResponseByKey(true);
                    httpRequestConfig.AddSplitConfig("AGV", DataMapperValidator.Get("AGV"));
                    httpRequestConfig.AddSplitConfig("ALARM", DataMapperValidator.Get("ALARM"));
                    foreach (var item in list)
                    {
                        HttpDataProcessor.ProcessSplitResponse(httpRequestConfig, item.data);
                    }
                }
            });
        }

        /// <summary>
        /// 재생을 시작합니다. UI를 표시하고 데이터를 세팅합니다.
        /// </summary>
        /// <param name="data">재생 목록 아이템 데이터</param>
        /// <example>
        /// <code>
        /// var itemData = new UIPlaybackListItemData { date = "2024-07-29", time = "13", sqlFileName = "2024-07-29_13.sqlite" };
        /// await PlaybackService.Instance.StartAsync(itemData);
        /// </code>
        /// </example>
        public async Task StartAsync(UIPlaybackListItemData data)
        {   
            timeScale = 1.0f; //기본 시간 스케일 설정
            UIPlayback.Instance.Show();
            await UIPlayback.Instance.SetData(data.date, data.time, data.sqlFileName);
        }

        /// <summary>
        /// 재생을 종료합니다. (이벤트 발생)
        /// </summary>
        /// <example>
        /// <code>
        /// PlaybackService.Instance.Exit();
        /// </code>
        /// </example>
        public void Exit()
        {
            OnExitPlayback?.Invoke();
        }

        /// <summary>
        /// 재생 데이터 파일을 준비(다운로드 및 압축 해제)합니다.
        /// 이미 파일이 있으면 바로 콜백을 호출합니다.
        /// </summary>
        /// <param name="date">날짜(예: "2024-12-05")</param>
        /// <param name="time">시간(예: "13")</param>
        /// <param name="fileName">파일명(예: "2024-12-05_0.sqlite.7z")</param>
        /// <param name="OnProgress">진행 상황 콜백 (진행 바이트, 전체 바이트, 퍼센트)</param>
        /// <param name="OnComplete">완료 콜백 (에러 메시지, 성공 시 null)</param>
        /// <returns>다운로드 요청 객체(필요시 Abort 등 제어 가능), 이미 파일이 있으면 null</returns>
        /// <example>
        /// <code>
        /// // 파일 준비 및 다운로드 예시
        /// PlaybackService.Instance.ReadyData(
        ///     "2024-12-05", "13", "2024-12-05_0.sqlite.7z",
        ///     (progress, total, percent) => Debug.Log($"{progress}/{total} ({percent * 100:F1}%)"),
        ///     (error) => {
        ///         if (string.IsNullOrEmpty(error))
        ///             Debug.Log("파일 준비 완료");
        ///         else
        ///             Debug.LogError($"오류: {error}");
        ///     }
        /// );
        /// </code>
        /// </example>
        public HTTPRequest? ReadyData(string date, string time, string fileName, Action<long, long, float> OnProgress, Action<string> OnComplete)
        {
            //date : "2024-12-05"
            //fileName : "2024-12-05_0.sqlite.7z"
            string playbackPath = PlaybackService.PlaybackFolderPath;
            string tempPath = Path.Combine(playbackPath, "temp");//한국 시간으로 변경하기 때문에 임시 폴더 만들어서 압축 해제 후 이동
            string datePath = Path.Combine(playbackPath, date);
            var fileNameArr = fileName.Split(".");
            string zipFilePath = Path.Combine(datePath, fileName);
            string sqlFilePath = Path.Combine(datePath, fileNameArr[0] + ".sqlite");

            DateTime utcDateTime = DateTimeUtil.Parse(fileNameArr[0], "yyyy-MM-dd_H");//.Add(-DateTimeUtil.UtcKoreaGap);
            string utcDatePath = Path.Combine(playbackPath, utcDateTime.ToString("yyyy-MM-dd"));
            string utcFileName = utcDateTime.ToString("yyyy-MM-dd_H") + "." + fileNameArr[1] + "." + fileNameArr[2];
            var utcFileNameArr = utcFileName.Split(".");
            string utcZipFilePath = Path.Combine(tempPath, utcFileName);
            string utcSqlFilePath = Path.Combine(tempPath, utcFileNameArr[0] + ".sqlite");
            if (!Directory.Exists(playbackPath)) Directory.CreateDirectory(playbackPath);
            if (!Directory.Exists(datePath)) Directory.CreateDirectory(datePath);
            if (!Directory.Exists(utcDatePath)) Directory.CreateDirectory(utcDatePath);
            if (!Directory.Exists(tempPath)) Directory.CreateDirectory(tempPath);
            if (File.Exists(sqlFilePath))
            {
                Debug.Log($"ONREADY SQP FILE");
                if (OnProgress != null) OnProgress.Invoke(100, 100, 1.0f);
                if (OnComplete != null) OnComplete.Invoke(null);
                return null;
            }
            else
            {
                long downloadTotal = 0;
                return repository.DownloadPlaybackData(utcFileName, utcZipFilePath,
                    (long progress, long length) =>
                {
                    float percent = (float)progress / (float)length;
                    Debug.Log($"DownloadPlaybackData OnProgress:{percent}");
                    if (OnProgress != null) OnProgress.Invoke(progress, length, percent / 2);
                    downloadTotal = length;
                }, async () =>
                {
                    await UniTask.Delay(500);
                    Debug.Log($"DownloadPlaybackData OnComplete");
                    if (File.Exists(utcZipFilePath))
                    {
                        if (OnProgress != null) OnProgress.Invoke(50, 100, 0.5f);
                        //압축해제 후
                        var zipper = new Zipper();

                        string errorMessage = await zipper.Decompress(utcZipFilePath, tempPath, (long read, long total, float percent) =>
                        {
                            if (OnProgress != null)
                            {
                                bool isComplte = false;
                                float percentRate = 0.5f + percent / 2;
                                if (percentRate > 0.99)
                                {
                                    percentRate = 0.99f;
                                    isComplte = true;
                                }
                                OnProgress.Invoke(downloadTotal + read, downloadTotal + total, 0.5f + percent / 2);
                                if (isComplte)
                                {
                                    Debug.Log($" DownloadReadData :{downloadTotal + read} , DownloadTotalData :{downloadTotal + total} ,DownloadPlaybackData OnProgress:{percent}");
                                }
                            }
                        });
                        Debug.Log($"zipper1 errorMessage:{errorMessage} utcSqlFilePath:{utcSqlFilePath} sqlFilePath:{sqlFilePath} utcZipFilePath:{utcZipFilePath}");

                        ////파일 접근 문제면 2회 0.5초 후에 다시 실행.
                        //if (errorMessage == "Could not open input(7z) file")
                        //{
                        //    await UniTask.Delay(500);
                        //    errorMessage = await zipper.Decompress(utcZipFilePath, tempPath, (long read, long total, float percent) =>
                        //    {
                        //        if (OnProgress != null) OnProgress.Invoke(downloadTotal + read, downloadTotal + total, 0.5f + percent / 2);
                        //    });
                        //    Debug.Log($"zipper2 errorMessage:{errorMessage} utcSqlFilePath:{utcSqlFilePath} sqlFilePath:{sqlFilePath} utcZipFilePath:{utcZipFilePath}");
                        //}

                        //if (errorMessage == "Could not open input(7z) file")
                        //{
                        //    await UniTask.Delay(500);
                        //    errorMessage = await zipper.Decompress(utcZipFilePath, tempPath, (long read, long total, float percent) =>
                        //    {
                        //        if (OnProgress != null) OnProgress.Invoke(downloadTotal + read, downloadTotal + total, 0.5f + percent / 2);
                        //    });
                        //    Debug.Log($"zipper3 errorMessage:{errorMessage} utcSqlFilePath:{utcSqlFilePath} sqlFilePath:{sqlFilePath} utcZipFilePath:{utcZipFilePath}");
                        //}

                        await UniTask.RunOnThreadPool(() =>
                        {
                            //압축해제 한 파일 이동
                            if (File.Exists(utcSqlFilePath))
                            {
                                //동일한 파일명이 있을경우 제거후 다시 
                                File.Copy(utcSqlFilePath, sqlFilePath);
                                File.Delete(utcSqlFilePath);
                            }

                            //zip 파일 삭제
                            File.Delete(utcZipFilePath);
                        });

                        if (OnComplete != null) OnComplete.Invoke(errorMessage);
                    }
                },
                (string? error) =>
                {
                    Debug.Log($"DownloadPlaybackData OnError:{error}");
                    if (OnComplete != null) OnComplete.Invoke(error);
                });
            }
        }


    }
}