using Newtonsoft.Json;
using System;
using System.IO;
using System.IO.Compression;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Xml;
using System.Xml.Serialization;

namespace Venus_Unity
{
    public class SerializeHelper
    {
        private static SerializeHelper m_Instance;
        public static SerializeHelper Instance
        {
            get
            {
                if (m_Instance == null)
                {
                    m_Instance = new SerializeHelper();
                }
                return m_Instance;
            }
        }

        public SerializeHelper()
        { }
        #region XML序列化
        /// <summary>
        /// 文件化XML序列化
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="filename">文件路径</param>
        public void Save(object obj, string filename)
        {
            FileStream fs = null;
            try
            {
                fs = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.ReadWrite);
                //Create our own namespaces for the output
                XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
                //Add an empty namespace and empty value
                ns.Add("", "");
                XmlSerializer serializer = new XmlSerializer(obj.GetType());
                serializer.Serialize(fs, obj, ns);
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (fs != null) fs.Close();
            }
        }
        /// <summary>
        /// 文件化XML反序列化
        /// </summary>
        /// <param name="type">对象类型</param>
        /// <param name="filename">文件路径</param>
        public object Load(Type type, string filename)
        {
            FileStream fs = null;
            try
            {
                fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                XmlSerializer serializer = new XmlSerializer(type);
                return serializer.Deserialize(fs);
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (fs != null) fs.Close();
            }
        }
        /// <summary>
        /// 文本化XML序列化
        /// </summary>
        /// <param name="item">对象</param>
        public string ToXml<T>(T item)
        {
            XmlSerializer serializer = new XmlSerializer(item.GetType());
            StringBuilder sb = new StringBuilder();
            using (XmlWriter writer = XmlWriter.Create(sb))
            {
                serializer.Serialize(writer, item);
                return sb.ToString();
            }
        }
        /// <summary>
        /// 文本化XML反序列化
        /// </summary>
        /// <param name="str">字符串序列</param>
        public T FromXml<T>(string str)
        {
            XmlSerializer serializer = new XmlSerializer(typeof(T));
            using (XmlReader reader = new XmlTextReader(new StringReader(str)))
            {
                return (T)serializer.Deserialize(reader);
            }
        }
        #endregion

        #region BinaryFormatter序列化
        /// <summary>
        /// BinaryFormatter序列化
        /// </summary>
        /// <param name="item">对象</param>
        public string ToBinary<T>(T item)
        {
            BinaryFormatter formatter = new BinaryFormatter();
            using (MemoryStream ms = new MemoryStream())
            {
                formatter.Serialize(ms, item);
                ms.Position = 0;
                byte[] bytes = ms.ToArray();
                StringBuilder sb = new StringBuilder();
                foreach (byte bt in bytes)
                {
                    sb.Append(string.Format("{0:X2}", bt));
                }
                return sb.ToString();
            }
        }
        /// <summary>
        /// BinaryFormatter反序列化
        /// </summary>
        /// <param name="str">字符串序列</param>
        public T FromBinary<T>(string str)
        {
            int intLen = str.Length / 2;
            byte[] bytes = new byte[intLen];
            for (int i = 0; i < intLen; i++)
            {
                int ibyte = Convert.ToInt32(str.Substring(i * 2, 2), 16);
                bytes[i] = (byte)ibyte;
            }
            BinaryFormatter formatter = new BinaryFormatter();
            using (MemoryStream ms = new MemoryStream(bytes))
            {
                return (T)formatter.Deserialize(ms);
            }
        }
        #endregion
        /// <summary>
        /// 将对象序列化为二进制字节
        /// </summary>
        /// <param name="obj">待序列化的对象</param>
        /// <returns></returns>
        public byte[] SerializeToBinary(object obj)
        {
            byte[] bytes = new byte[2500];
            using (MemoryStream memoryStream = new MemoryStream())
            {
                BinaryFormatter bformatter = new BinaryFormatter();
                bformatter.Serialize(memoryStream, obj);
                memoryStream.Seek(0, 0);
                if (memoryStream.Length > bytes.Length)
                {
                    bytes = new byte[memoryStream.Length];
                }
                bytes = memoryStream.ToArray();
            }
            return bytes;
        }
        /// <summary>
        /// 从二进制字节中反序列化为对象
        /// </summary>
        /// <param name="type">对象的类型</param>
        /// <param name="bytes">字节数组</param>
        /// <returns>反序列化后得到的对象</returns>
        public object DeserializeFromBinary(Type type, byte[] bytes)
        {
            object result = new object();
            using (MemoryStream memoryStream = new MemoryStream(bytes))
            {
                BinaryFormatter serializer = new BinaryFormatter();
                result = serializer.Deserialize(memoryStream);
            }
            return result;
        }
        /// <summary>
        /// 将文件对象序列化到文件中
        /// </summary>
        /// <param name="obj">待序列化的对象</param>
        /// <param name="path">文件路径</param>
        /// <param name="fileMode">文件打开模式</param>
        public void SerializeToBinary(object obj, string path, FileMode fileMode)
        {
            using (FileStream fs = new FileStream(path, fileMode))
            {
                // Construct a BinaryFormatter and use it to serialize the data to the stream.
                BinaryFormatter formatter = new BinaryFormatter();
                formatter.Serialize(fs, obj);
            }
        }
        /// <summary>
        /// 将文件对象序列化到文件中
        /// </summary>
        /// <param name="obj">待序列化的对象</param>
        /// <param name="path">文件路径</param>
        public void SerializeToBinary(object obj, string path)
        {
            SerializeToBinary(obj, path, FileMode.Create);
        }
        /// <summary>
        /// 从二进制文件中反序列化为对象
        /// </summary>
        /// <param name="type">对象的类型</param>
        /// <param name="path">二进制文件路径</param>
        /// <returns>反序列化后得到的对象</returns>
        public object DeserializeFromBinary(Type type, string path)
        {
            object result = new object();
            using (FileStream fileStream = new FileStream(path, FileMode.Open))
            {
                BinaryFormatter serializer = new BinaryFormatter();
                result = serializer.Deserialize(fileStream);
            }
            return result;
        }
        /// <summary>
        /// 获取对象的转换为二进制的字节大小
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public long GetByteSize(object obj)
        {
            long result;
            BinaryFormatter bFormatter = new BinaryFormatter();
            using (MemoryStream stream = new MemoryStream())
            {
                bFormatter.Serialize(stream, obj);
                result = stream.Length;
            }
            return result;
        }
        /// <summary>
        /// 克隆一个对象
        /// </summary>
        /// <param name="obj">待克隆的对象</param>
        /// <returns>克隆的一个新的对象</returns>
        public object Clone(object obj)
        {
            object cloned = null;
            BinaryFormatter bFormatter = new BinaryFormatter();
            using (MemoryStream memoryStream = new MemoryStream())
            {
                try
                {
                    bFormatter.Serialize(memoryStream, obj);
                    memoryStream.Seek(0, SeekOrigin.Begin);
                    cloned = bFormatter.Deserialize(memoryStream);
                }
                catch //(Exception e)
                {
                    ;
                }
            }
            return cloned;
        }
        /// <summary>
        /// 从文件中读取文本内容
        /// </summary>
        /// <param name="path">文件路径</param>
        /// <returns>文件的内容</returns>
        public string ReadFile(string path)
        {
            string content = string.Empty;
            using (StreamReader reader = new StreamReader(path))
            {
                content = reader.ReadToEnd();
            }
            return content;
        }
  
        private byte[] compress(byte[] bytes)
        {
            using (MemoryStream ms = new MemoryStream())
            {
                using (DeflateStream gzs = new DeflateStream(ms, CompressionMode.Compress, false))
                {
                    gzs.Write(bytes, 0, bytes.Length);
                }
                ms.Close();
                return ms.GetBuffer();
            }
        }
        private byte[] decompress(byte[] bytes)
        {
            using (MemoryStream ms = new MemoryStream(bytes, false))
            {
                using (DeflateStream gzs = new DeflateStream(ms, CompressionMode.Decompress, false))
                {
                    using (MemoryStream dest = new MemoryStream())
                    {
                        byte[] tmp = new byte[bytes.Length];
                        int read;
                        while ((read = gzs.Read(tmp, 0, tmp.Length)) != 0)
                        {
                            dest.Write(tmp, 0, read);
                        }
                        dest.Close();
                        return dest.GetBuffer();
                    }
                }
            }
        }


        /// <summary>
        /// 序列化成一个字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="entity"></param>
        /// <returns></returns>
        public string XMLSerializeToString<T>(T entity)
        {
            StringBuilder buffer = new StringBuilder();

            XmlSerializer serializer = new XmlSerializer(typeof(T));
            using (TextWriter writer = new StringWriter(buffer))
            {
                serializer.Serialize(writer, entity);
            }
            return buffer.ToString();
        }

        /// <summary>
        /// xml字符串反序列化为一个XML文件
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="xmlString"></param>
        /// <returns></returns>
        public T DeXMLSerialize<T>(string xmlString)
        {
            T cloneObject = default(T);

            StringBuilder buffer = new StringBuilder();
            buffer.Append(xmlString);
            XmlSerializer serializer = new XmlSerializer(typeof(T));
            using (TextReader reader = new StringReader(buffer.ToString()))
            {
                Object obj = serializer.Deserialize(reader);
                cloneObject = (T)obj;
            }
            return cloneObject;
        }

        /// <summary>
        /// Json转换成对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="jsonText"></param>
        /// <returns></returns>
        public T JsonStringToObject<T>(string jsonText)
        {
            DataContractJsonSerializer s = new DataContractJsonSerializer(typeof(T));
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonText));
            T obj = (T)s.ReadObject(ms);
            ms.Dispose();
            return obj;
        }

        /// <summary>
        /// 对象转换成JSON
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        public string ObjectToJsonString<T>(T obj)
        {
            string result = string.Empty;
            try
            {
                DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(T));
                using (MemoryStream ms = new MemoryStream())
                {
                    serializer.WriteObject(ms, obj);
                    ms.Position = 0;

                    using (StreamReader read = new StreamReader(ms))
                    {
                        result = read.ReadToEnd();
                    }
                }
            }
            catch (Exception ex)
            {
                throw new Exception(" 对象转换成JSON失败!" + ex.Message);
            }
            return result;
        }

        /// <summary>
        /// 类对象保存为Json文件
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <param name="strFilePath"></param>
        /// <returns></returns>
        public bool WriteToJsonFile<T>(T obj, string strFilePath)
        {
            bool bRes = false;
            try
            {
                string strJson = ObjectToJsonString(obj);
                //File.WriteAllText(strFilePath, strJson, Encoding.UTF8);
                WriteToJsonFile(strJson, strFilePath);
                bRes = true;
            }
            catch (Exception ex)
            {
                throw new Exception("Write Json File Fail!" + ex.Message);
            }
            return bRes;
        }

        /// <summary>
        /// Json文件转换为类对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="strFilePath"></param>
        /// <returns></returns>
        public T ReadFromJsonFile<T>(string strFilePath)
        {
            if (File.Exists(strFilePath))
            {
                try
                {
                    string strJson = File.ReadAllText(strFilePath);
                    return JsonStringToObject<T>(strJson);
                }
                catch (Exception ex)
                {
                    throw new Exception("Read Json File Fail!" + ex.Message);
                }
            }
            else
            {
                throw new Exception("File is not Exit!");
            }
        }

        /// <summary>
        /// 对象转换成JSON，并保存文件
        /// </summary>
        /// <param name="obj"></param>
        /// <param name="path"></param>
        public void WriteToJsonFile(string content, string path)
        {
            if (!File.Exists(path))  // 判断是否已有相同文件 
            {
                FileStream fs1 = new FileStream(path, FileMode.Create, FileAccess.ReadWrite);
                fs1.Flush();
                fs1.Dispose();
                fs1.Close();
            }
            File.WriteAllText(path, ConvertJsonString(content));
        }

        /// <summary>
        /// 格式化json字符串
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        private string ConvertJsonString(string str)
        {
            JsonSerializer serializer = new JsonSerializer();
            TextReader tr = new StringReader(str);
            JsonTextReader jtr = new JsonTextReader(tr);
            object obj = serializer.Deserialize(jtr);
            if (obj != null)
            {
                StringWriter textWriter = new StringWriter();
                JsonTextWriter jsonWriter = new JsonTextWriter(textWriter)
                {
                    Formatting = Newtonsoft.Json.Formatting.Indented,
                    Indentation = 4,
                    IndentChar = ' '
                };
                serializer.Serialize(jsonWriter, obj);
                return textWriter.ToString();
            }
            else
            {
                return str;
            }
        }

        public static T DeepCopyJson<T>(T obj)
        {
            return JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(obj));
        }
    }
}