using Newtonsoft.Json;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using UnityEngine;



public class VideoData
{
    public string Url;//对应文件完整路径
    public string Mode;//Practice为练习模式,manoeuvre为演习模式
    public string RoomId;//房间id
    public string RoomName;//房间名
    public string Creator;//创建者
    public string Name;//输入的文件名
    public string RecoedTime;//录制持续时间
}
public class VideoFileCtrl 
{
    public static readonly VideoFileCtrl Instance = new VideoFileCtrl();
    public List<VideoData> PracticeDatas = new List<VideoData>();
    public List<VideoData> manoeuvreDatas = new List<VideoData>();
    public string RECFilePath;
    private List<string> PracticeUrlList = new List<string>();
    private List<string> manoeuvreUrlList = new List<string>();
    //private void Awake()
    //{
    //    //DontDestroyOnLoad(this);
    //    //Instance = this;
    //    Init();
    //}
    // Start is called before the first frame update
    //void Start()
    //{
    //    RECFilePath = Path.Combine(Application.streamingAssetsPath, "RECFile");
    //    PracticeDatas = GetVideoData("/PracticeVideoList.json");
    //    manoeuvreDatas = GetVideoData("/manoeuvreVideoList.json");
    //    for (int i = 0; i < PracticeDatas.Count; i++)
    //    {
    //        PracticeUrlList.Add(PracticeDatas[i].Url);
    //    }
    //    for (int i = 0; i < manoeuvreDatas.Count; i++)
    //    {
    //        manoeuvreUrlList.Add(manoeuvreDatas[i].Url);
    //    }
    //}
    public void Init()
    {
        RECFilePath = Path.Combine(Application.streamingAssetsPath, "RECFile");
        PracticeDatas = GetVideoData("/PracticeVideoList.json");
        manoeuvreDatas = GetVideoData("/manoeuvreVideoList.json");
        for (int i = 0; i < PracticeDatas.Count; i++)
        {
            PracticeUrlList.Add(PracticeDatas[i].Url);
        }
        for (int i = 0; i < manoeuvreDatas.Count; i++)
        {
            manoeuvreUrlList.Add(manoeuvreDatas[i].Url);
        }
    }
    // Update is called once per frame
    void Update()
    {

    }
    public void LoadFileStringSync(string path, Action<string> complete)
    {
        if (!File.Exists(path))
            return;
        StreamReader sr = new StreamReader(path);
        if (sr == null)
            return;

        string fileString = sr.ReadToEnd();
        sr.Close();
        sr.Dispose();
        if (complete != null)
            complete(fileString);
    }
    private List<VideoData> GetVideoData(string filepath)
    {
        List<VideoData> data = new List<VideoData>();
        LoadFileStringSync(
            RECFilePath + filepath,
            VideoJsonData =>
            {
                var tasksData = JsonConvert.DeserializeObject<List<VideoData>>(VideoJsonData);
                data = tasksData;
            }
        );
        return data;
    }
    /// <summary>
    /// 新生成视频时添加文件，并修改json
    /// </summary>
    /// <param name="videoData"></param>
    /// <param name="mode"></param>
    public void AddVideoDatasToJson(VideoData videoData,string mode)
    {
        if (mode== "manoeuvre") 
        {
            if (!manoeuvreUrlList.Contains(videoData.Url)) 
            {
                manoeuvreUrlList.Add(videoData.Url);
                manoeuvreDatas.Add(videoData);
            }
            string jsondata = JsonConvert.SerializeObject(manoeuvreDatas);
             WriteFileToLocal(jsondata,Path.Combine(RECFilePath, "manoeuvreVideoList.json"));
        }
        if (mode== "Practice") 
        {
            if (!PracticeUrlList.Contains(videoData.Url))
            {
                PracticeUrlList.Add(videoData.Url);
                PracticeDatas.Add(videoData);
            }
            string jsondata = JsonConvert.SerializeObject(PracticeDatas);
             WriteFileToLocal(jsondata, Path.Combine(RECFilePath, "PracticeVideoList.json"));
        }
        
    }
    public void DelectVideoAndUpdateJson(string url,string mode) 
    {
        if (mode == "manoeuvre") 
        {
            if (manoeuvreUrlList.Contains(url)) 
            {
                manoeuvreUrlList.Remove(url);
            }
            for (int i = 0; i < manoeuvreDatas.Count; i++)
            {
                if (manoeuvreDatas[i].Url==url) 
                {
                    manoeuvreDatas.Remove(manoeuvreDatas[i]);
                }
            }
            if (File.Exists(url))
            {
                File.Delete(url);
            }
            string imagepath = url.Replace(".mp4", ".png");
            if (File.Exists(imagepath))
            {
                //删除图片文件
                File.Delete(imagepath);
            }
            string jsondata = JsonConvert.SerializeObject(manoeuvreDatas);
            WriteFileToLocal(jsondata, Path.Combine(RECFilePath, "manoeuvreVideoList.json"));
        }
        if (mode == "Practice")
        {
            if (PracticeUrlList.Contains(url))
            {
                PracticeUrlList.Remove(url);
            }
            for (int i = 0; i < PracticeDatas.Count; i++)
            {
                if (PracticeDatas[i].Url == url)
                {
                    PracticeDatas.Remove(PracticeDatas[i]);
                }
            }
            if (File.Exists(url))
            {
                //删除视频文件
                File.Delete(url);
            }
            string imagepath = url.Replace(".mp4", ".png");
            if (File.Exists(imagepath))
            {
                //删除图片文件
                File.Delete(imagepath);
            }
            string jsondata = JsonConvert.SerializeObject(PracticeDatas);
            WriteFileToLocal(jsondata, Path.Combine(RECFilePath, "PracticeVideoList.json"));
        }

    }

    private void WriteFileToLocal(string fileJsonData, string filePath)
    {
        //var fileDirectory = Path.GetDirectoryName(filePath);
        if (File.Exists(filePath)) 
        {
            File.Delete(filePath);
        }
        //if (!File.Exists(filePath))
        //{
        //    File.Create(filePath);
        //}
        //using (var filestream = new FileStream(filePath, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite))
        //{
        //    var fileBytes = Encoding.UTF8.GetBytes(fileJsonData);
        //    filestream.Write(fileBytes, 0, fileBytes.Length);
        //}

        FileStream file = File.Create(filePath);
        byte[] byteArray = Encoding.UTF8.GetBytes(fileJsonData);
        file.Write(byteArray, 0, byteArray.Length);
        file.Close();
        
    }
}