using System;
using System.IO;
using System.Collections.Generic;
using UnityEngine;
using LitJson;
using System.Text;

namespace JXSoft
{
    /// <summary>
    /// how to use:
    /// JsonIOUtitlty jsonIO = new JsonIOUtility(); or JsonIOUtitlty jsonIO = new JsonIOUtility("myJsonFile");
    /// //Save data to native json file;
    /// jsonIO.setData(TypeClass object);
    /// jsonIO.SaveToJsonFile();
    /// //Read data to native json file;
    /// jsonIO.getData<TypeClass>();
    /// </summary>

    public class JsonIOUtility
    {
        private string DefaultJsonFile = "";
        private JsonIOCContainer jsonContainer = new JsonIOCContainer();
        private JsonData mInstance = new JsonData();
        public JsonIOUtility()
        {
            loadJsonFile();
        }
        public JsonIOUtility(string fileName)
        {
            loadJsonFile(fileName);
        }

        //Setting FileName and Path（Default using Application.persistentDataPath）
        private void setLoadFile(string fileName)
        {
            DefaultJsonFile = Application.persistentDataPath + "/" + fileName + ".json";
            Debug.Log(DefaultJsonFile);
        }
        #region load
        //Load From File
        public void loadJsonFile()
        {
            loadJsonFile("JsonConfig");
        }
        public void loadJsonFile(string fileName)
        {
            jsonContainer.Clear();
            setLoadFile(fileName);
            if (!File.Exists(DefaultJsonFile))
            {
                Debug.LogWarning("No Such File,create New");
                File.Create(DefaultJsonFile).Dispose();
                SaveToJsonFile();
                //return null;
            }
            string jsonFile = File.ReadAllText(DefaultJsonFile);
            mInstance = JsonMapper.ToObject(jsonFile);
        }
        #endregion

        #region save
        //Save to local
        public void SaveToJsonFile()
        {
            setData(new JsonIOUtilitySaveDate());
            foreach (Type type in jsonContainer.getInstance().Keys)
            {
                string data = JsonMapper.ToJson(jsonContainer.getInstance()[type]);
                mInstance[type.ToString()] = JsonMapper.ToObject(data);
            }
            StringBuilder sb = new StringBuilder();
            JsonWriter jWriter = new JsonWriter(sb);
            jWriter.PrettyPrint = true;
            jWriter.IndentValue = 4;
            JsonMapper.ToJson(mInstance, jWriter);
            Debug.Log("saveFileData:" + mInstance.ToJson());
            File.WriteAllText(DefaultJsonFile, sb.ToString());
        }
        #endregion


        #region fileListOpreate
        private DataDirectory dataDirectory;
        //Loading FileList From Folder（Default using Application.persistentDataPath）
        public void loadFileList()
        {
            GetDataDirectoryQuery getDirectory = new GetDataDirectoryQuery(Application.persistentDataPath);
            dataDirectory = getDirectory.DoQuery();
        }
        public void loadFileList(string path)
        {
            if (!Directory.Exists(Application.persistentDataPath + "/" + path))
            {
                Directory.CreateDirectory(Application.persistentDataPath + "/" + path);
            }
            GetDataDirectoryQuery getDirectory = new GetDataDirectoryQuery(Application.persistentDataPath, path);
            dataDirectory = getDirectory.DoQuery();
        }
        public DataDirectory GetDataDirectory()
        {
            return dataDirectory;
        }
        #endregion

        #region Save&Read interface
        public void setData<TData>(TData data) where TData : class
        {
            jsonContainer.Register(data);
        }
        public TData getData<TData>() where TData : class, new()
        {
            TData data = jsonContainer.Get<TData>();
            if (data == null)
            {
                var key = typeof(TData);
                if (mInstance.ContainsKey(key.ToString()))
                {
                    data = JsonMapper.ToObject<TData>(mInstance[key.ToString()].ToJson());
                    jsonContainer.Register(data);
                }
                else
                    Debug.LogWarning("No Such Data");
            }
            return data;
        }
        #endregion

    }

    #region DataTime
    /// <summary>
    /// Every Time Create&Save Recording this Time
    /// </summary>
    public class JsonIOUtilitySaveDate
    {
        public long timeStamp;
        public string timeStr;
        public JsonIOUtilitySaveDate()
        {
            timeStamp = DateUtil.getTimeStamp();
            timeStr = DateUtil.getFullDateMsg();
        }
    }

    public class DateUtil
    {
        public static string getFullDateMsg()
        {
            return DateTime.Now.ToString("yyyy-MM-dd") + " " + DateTime.Now.ToString("HH:mm:ss");
        }
        public static string getDayDateMsg()
        {
            return DateTime.Now.ToString("HH:mm:ss");
        }
        public static long getTimeStamp()
        {
            TimeSpan ts = DateTime.Now - new DateTime(1970, 1, 1, 8, 0, 0, 0);
            return Convert.ToInt64(ts.TotalSeconds);
        }
    }
    #endregion

    #region IOCContainer
    /// <summary>
    /// IOC For Json
    /// </summary>
    public class JsonIOCContainer
    {
        private Dictionary<Type, object> mInstances = new Dictionary<Type, object>();

        public void Register<T>(T instance)
        {
            var key = typeof(T);

            if (mInstances.ContainsKey(key))
            {
                mInstances[key] = instance;
            }
            else
            {
                mInstances.Add(key, instance);
            }
        }

        public T Get<T>() where T : class
        {
            var key = typeof(T);

            if (mInstances.TryGetValue(key, out var retInstance))
            {
                return retInstance as T;
            }

            return null;
        }
        public Dictionary<Type, object> getInstance()
        {
            return mInstances;
        }
        public void Clear()
        {
            mInstances.Clear();
        }
    }
    #endregion


    //存放当前目录信息(包括文件夹以及Json存档，如果以后相加新模块在结构类里添加新的list即可)
    public class DataDirectory
    {
        //当前的目录
        public string directoryName;
        public string absPathName = "";
        //如果有父级
        private string parentsPathName;
        //当前目录包含的文件夹名称
        public List<string> childDirectoryNames;
        //当前目录包含的JsonFile
        public List<string> childJsonFile;
        public DataDirectory(string directoryName, List<string> childDirectoryNames, List<string> childVideoNames)
        {
            this.directoryName = directoryName;
            this.childDirectoryNames = childDirectoryNames;
            this.childJsonFile = childVideoNames;
            this.absPathName = "";
        }
        public DataDirectory(string directoryName, string absPath, List<string> childDirectoryNames, List<string> childJsonFile)
        {
            this.directoryName = directoryName;
            this.childDirectoryNames = childDirectoryNames;
            this.childJsonFile = childJsonFile;
            this.absPathName = absPath;
        }

        //测试用，结构化输出
        public string toString()
        {
            string msg = "";
            msg += "Path:\n" + directoryName + "\n";
            msg += "AbsPath:\n" + absPathName + "\n";
            msg += "ParentPath:\n" + getParentPath() + "\n";
            msg += "Directroy:\n";
            foreach (string s in childDirectoryNames)
            {
                msg = msg + s + "|";
            }
            msg += "\nJsonFile:\n";
            foreach (string s in childJsonFile)
            {
                msg = msg + s + "|";
            }
            return msg;
        }

        public string getAbsPath()
        {
            return absPathName + "/";
        }

        public string getParentPath()
        {
            parentsPathName = getParentPathWithPath(directoryName);
            return parentsPathName;
        }
        public string getAbsParentPath()
        {
            //存在多级目录的
            return getParentPathWithPath(absPathName);
        }
        private string getParentPathWithPath(string originPath)
        {
            string parentsPath_ = "";
            string[] dirArray = originPath.Split('/');
            dirArray[dirArray.Length - 1] = "";
            foreach (string dir in dirArray)
            {
                if (!"".Equals(parentsPath_) && !"".Equals(dir))
                {
                    parentsPath_ += "/";
                }
                parentsPath_ += dir;
            }
            if (parentsPath_.Equals("/"))
            {
                parentsPath_ = "";
            }
            return parentsPath_;
        }
    }

    #region Query
    public class GetDataDirectoryQuery
    {
        //当前目录名称
        private string directoryName;
        private string absPathName = "";
        public GetDataDirectoryQuery(string directoryName)
        {
            this.directoryName = directoryName;
        }
        public GetDataDirectoryQuery(string directoryName, string absPathName)
        {
            this.directoryName = directoryName + "/" + absPathName;
            this.absPathName = absPathName;
        }
        public DataDirectory DoQuery()
        {
            List<string> childDirectoryNames = new List<string>();
            List<string> childJsonFileNames = new List<string>();
            DirectoryInfo dirInfo = new DirectoryInfo(directoryName);
            FileInfo[] fileInfos = dirInfo.GetFiles();
            DirectoryInfo[] directroyInfos = dirInfo.GetDirectories();
            //------------------------getDirectoryNames----------------//
            foreach (DirectoryInfo di in directroyInfos)
            {
                childDirectoryNames.Add(di.Name);
            }
            //------------------------getVideoNames----------------//
            for (int i = 0; i < fileInfos.Length; i++)
            {
                //有后缀的名字
                string fileNameWithSuffix = fileInfos[i].Name;
                int index = fileNameWithSuffix.LastIndexOf('.');
                //如果后缀不是json直接下一个
                if (fileNameWithSuffix.Length - index <= 4)
                {
                    continue;
                }
                if (fileNameWithSuffix.Substring(index + 1, 4) != "json") continue;
                //没有后缀的名字
                string fileName = fileNameWithSuffix.Substring(0, index);
                childJsonFileNames.Add(fileName);
            }
            DataDirectory directories = new DataDirectory(this.directoryName, this.absPathName, childDirectoryNames, childJsonFileNames);
            return directories;
        }
    }
    #endregion
}