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

namespace BaseLibRWFile
{
    /// <summary>
    /// XMLHelper
    /// </summary>
    public class XMLHelper
    {
        /// <summary>
        /// Creates the specified node name.
        /// </summary>
        /// <param name="nodeName">Name of the node.</param>
        /// <returns>XmlNode.</returns>
        public static XmlNode Create(string nodeName)
        {
            var doc = new XmlDocument();
            XmlNode node = doc.CreateElement(nodeName);
            return node;
        }

        /// <summary>
        /// Creates the attribute.
        /// </summary>
        /// <param name="node">The node.</param>
        /// <param name="attributeName">Name of the attribute.</param>
        /// <param name="value">The value.</param>
        /// <returns>XmlAttribute.</returns>

        public static XmlAttribute CreateAttribute(XmlNode node, string attributeName, string value)
        {
            try
            {
                XmlDocument doc = node.OwnerDocument;
                XmlAttribute attr = doc.CreateAttribute(attributeName);
                attr.Value = value;
                node.Attributes.SetNamedItem(attr);
                return attr;
            }
            catch (Exception err)
            {
                string desc = err.Message;
                return null;
            }
        }

        /// <summary>
        /// Objects to XML.
        /// </summary>
        /// <param name="config">The configuration.</param>
        /// <returns>XmlNode.</returns>

        public static XmlNode ObjectToXML(object config)
        {
            try
            {
                var xnd = new XmlDocument();
                if (config != null)
                {
                    //we need the type to serialize
                    Type t = config.GetType();
                    var ser = new XmlSerializer(t);
                    //will hold the xml
                    using (var writer = new StringWriter(CultureInfo.InvariantCulture))
                    {
                        ser.Serialize(writer, config);
                        xnd.LoadXml(writer.ToString());
                        writer.Close();
                    }
                }
                return xnd.DocumentElement;
            }
            catch
            {
                throw;
            }

        }
        /// <summary>
        /// XMLs to object.
        /// </summary>
        /// <param name="node">The node.</param>
        /// <param name="objectType">Type of the object.</param>
        /// <returns>System.Object.</returns>
        public static object XMLToObject(XmlNode node, Type objectType)
        {
            object convertedObject = null;
            if (node != null)
            {
                using (var reader = new StringReader(node.OuterXml))
                {
                    var ser = new XmlSerializer(objectType);
                    convertedObject = ser.Deserialize(reader);
                    reader.Close();
                }
            }
            return convertedObject;
        }
    }

    /// <summary>
    /// Class XmlSerializerHelper.
    /// </summary>

    public class ClsXml
    {
        /// <summary>
        /// 读取XML文件
        /// </summary>
        /// <param name="XmlFilePath">The XML file path.</param>
        /// <param name="type">The type.</param>
        /// <returns>System.Object.</returns>
        public static object ReadXML(string XmlFilePath, Type type)
        {
            object object4Read = null;
            var serializer = new XmlSerializer(type);
            if (!File.Exists(XmlFilePath))
            {
                return new object();
            }
            while (object4Read == null)
            {
                var stream = new FileStream(XmlFilePath, FileMode.Open);
                try
                {
                    object4Read = serializer.Deserialize(stream);
                }
                finally
                {
                    stream.Close();
                }
            }
            return object4Read;
        }

        /// <summary>
        /// 序列化XML文件
        /// </summary>
        /// <param name="myDs">My ds.</param>
        /// <param name="XmlFilePath">The XML file path.</param>
        /// <param name="type">The type.</param>
        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
        public static bool WriteXML(object myDs, string XmlFilePath, Type type)
        {
            bool flag = true;
            StreamWriter writer = null;
            var serializer = new XmlSerializer(type);
            try
            {
                writer = new StreamWriter(XmlFilePath, false);
                serializer.Serialize(writer, myDs);
            }
            catch (Exception)
            {
                flag = false;
            }
            finally
            {
                if (writer != null)
                {
                    writer.Close();
                }
            }
            return flag;
        }

        /// <summary>
        /// XMLs the serialize.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="entity">The entity.</param>
        /// <returns>System.String.</returns>
        public static string XMLSerialize<T>(T entity)
        {
            var buffer = new StringBuilder();

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

            return buffer.ToString();
        }
        /// <summary>
        /// Des the XML serialize.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="xmlString">The XML string.</param>
        /// <returns>T.</returns>
        public static T DeXMLSerialize<T>(string xmlString)
        {
            T cloneObject = default(T);

            var buffer = new StringBuilder();
            buffer.Append(xmlString);

            var serializer = new XmlSerializer(typeof(T));

            using (TextReader reader = new StringReader(buffer.ToString()))
            {
                Object obj = serializer.Deserialize(reader);
                cloneObject = (T)obj;
            }

            return cloneObject;
        }

        /// <summary>
        /// 把对象序列化为字符串
        /// </summary>
        /// <param name="pObj">The p object.</param>
        /// <returns>System.Byte[].</returns>
        public static byte[] SerializeObject(object pObj)
        {
            if (pObj == null)
                return null;
            var _memory = new MemoryStream();
            var formatter = new BinaryFormatter();
            formatter.Serialize(_memory, pObj);
            _memory.Position = 0;
            var read = new byte[_memory.Length];
            _memory.Read(read, 0, read.Length);
            _memory.Close();
            return Compress(read);
        }

        /// <summary>
        /// 把字节反序列化成相应的对象
        /// </summary>
        /// <param name="pBytes">字节流</param>
        /// <returns>object</returns>
        public static object DeserializeObject(byte[] pBytes)
        {
            object _newOjb = null;
            if (pBytes == null)
                return _newOjb;
            var _memory = new MemoryStream(Decompress(pBytes));
            _memory.Position = 0;
            var formatter = new BinaryFormatter();
            _newOjb = formatter.Deserialize(_memory);
            _memory.Close();
            return _newOjb;
        }

        /// <summary>
        /// Write byte[] to file
        /// </summary>
        /// <param name="dataSource">The data source.</param>
        /// <param name="filePath">The file path.</param>
        public static void WriteByteToFile(byte[] dataSource, string filePath)
        {
            var fs = new FileStream(filePath, FileMode.Create);

            //将byte数组写入文件中
            fs.Write(dataSource, 0, dataSource.Length);

            fs.Close();
        }

        /// <summary>
        /// Read byte from file
        /// </summary>
        /// <param name="filePath">The file path.</param>
        /// <returns>System.Byte[].</returns>
        public static byte[] ReadByteFromFile(string filePath)
        {
            var fs = new FileStream(filePath, FileMode.Open);

            //获取文件大小
            long size = fs.Length;

            var array = new byte[size];

            //将文件读到byte数组中
            fs.Read(array, 0, array.Length);

            fs.Close();

            return array;
        }

        /// <summary>
        /// Write object to file
        /// </summary>
        /// <param name="dataSource">The data source.</param>
        /// <param name="filePath">The file path.</param>
        public static void WriteObjectToFile(object dataSource, string filePath)
        {
            var fs = new FileStream(filePath, FileMode.Create);

            byte[] arraysource = SerializeObject(dataSource);
            //将byte数组写入文件中
            fs.Write(arraysource, 0, arraysource.Length);

            fs.Close();
        }

        /// <summary>
        /// Read object from file
        /// </summary>
        /// <param name="filePath">The file path.</param>
        /// <returns>System.Object.</returns>
        public static object ReadObjectFromFile(string filePath)
        {
            var fs = new FileStream(filePath, FileMode.Open);

            //获取文件大小
            long size = fs.Length;

            var array = new byte[size];

            //将文件读到byte数组中
            fs.Read(array, 0, array.Length);

            fs.Close();

            return DeserializeObject(array);
        }

        /// <summary>
        /// 字符串压缩
        /// </summary>
        /// <param name="data">The data.</param>
        /// <returns>System.Byte[].</returns>
        /// <exception cref="Exception"></exception>
        public static byte[] Compress(byte[] data)
        {
            try
            {
                var ms = new MemoryStream();
                var zip = new GZipStream(ms, CompressionMode.Compress, true);
                zip.Write(data, 0, data.Length);
                zip.Close();
                var buffer = new byte[ms.Length];
                ms.Position = 0;
                ms.Read(buffer, 0, buffer.Length);
                ms.Close();
                return buffer;
            }
            catch (Exception e)
            {
                throw new Exception(e.Message);
            }
        }

        /// <summary>
        /// 字符串解压缩
        /// </summary>
        /// <param name="data">The data.</param>
        /// <returns>System.Byte[].</returns>
        /// <exception cref="Exception"></exception>
        public static byte[] Decompress(byte[] data)
        {
            try
            {
                var ms = new MemoryStream(data);
                var zip = new GZipStream(ms, CompressionMode.Decompress, true);
                var msreader = new MemoryStream();
                var buffer = new byte[0x1000];
                while (true)
                {
                    int reader = zip.Read(buffer, 0, buffer.Length);
                    if (reader <= 0)
                    {
                        break;
                    }
                    msreader.Write(buffer, 0, reader);
                }
                zip.Close();
                ms.Close();
                msreader.Position = 0;
                buffer = msreader.ToArray();
                msreader.Close();
                return buffer;
            }
            catch (Exception e)
            {
                throw new Exception(e.Message);
            }
        }

        /// <summary>
        /// string 压缩
        /// </summary>
        /// <param name="str">The string.</param>
        /// <returns>System.String.</returns>
        public static string CompressString(string str)
        {
            string compressString = "";
            byte[] compressBeforeByte = Encoding.GetEncoding("UTF-8").GetBytes(str);
            byte[] compressAfterByte = Compress(compressBeforeByte);
            //compressString = Encoding.GetEncoding("UTF-8").GetString(compressAfterByte);  
            compressString = Convert.ToBase64String(compressAfterByte);
            return compressString;
        }

        /// <summary>
        /// string 解压缩
        /// </summary>
        /// <param name="str">The string.</param>
        /// <returns>System.String.</returns>
        public static string DecompressString(string str)
        {
            string compressString = "";
            //byte[] compressBeforeByte = Encoding.GetEncoding("UTF-8").GetBytes(str);  
            byte[] compressBeforeByte = Convert.FromBase64String(str);
            byte[] compressAfterByte = Decompress(compressBeforeByte);
            compressString = Encoding.GetEncoding("UTF-8").GetString(compressAfterByte);
            return compressString;
        }

        /// <summary>
        /// XMLs the serialize internal.
        /// </summary>
        /// <param name="stream">The stream.</param>
        /// <param name="o">The o.</param>
        /// <param name="encoding">The encoding.</param>
        private static void XmlSerializeInternal(Stream stream, object o, Encoding encoding)
        {
            if (o == null)
                throw new ArgumentNullException(nameof(o));
            if (encoding == null)
                throw new ArgumentNullException(nameof(encoding));

            XmlSerializer serializer = new XmlSerializer(o.GetType());

            XmlWriterSettings settings = new XmlWriterSettings();
            settings.Indent = true;
            settings.NewLineChars = "\r\n";
            settings.Encoding = encoding;
            settings.IndentChars = "    ";

            using (XmlWriter writer = XmlWriter.Create(stream, settings))
            {
                serializer.Serialize(writer, o);
                writer.Close();
            }
        }

        /// <summary>
        /// 将一个对象序列化为XML字符串
        /// </summary>
        /// <param name="o">要序列化的对象</param>
        /// <param name="encoding">编码方式</param>
        /// <returns>序列化产生的XML字符串</returns>
        public static string XmlSerialize(object o, Encoding encoding)
        {
            using (MemoryStream stream = new MemoryStream())
            {
                XmlSerializeInternal(stream, o, encoding);

                stream.Position = 0;
                using (StreamReader reader = new StreamReader(stream, encoding))
                {
                    return reader.ReadToEnd();
                }
            }
        }

        /// <summary>
        /// 将一个对象按XML序列化的方式写入到一个文件
        /// </summary>
        /// <param name="o">要序列化的对象</param>
        /// <param name="path">保存文件路径</param>
        /// <param name="encoding">编码方式</param>
        public static void XmlSerializeToFile(object o, string path, Encoding encoding)
        {
            if (string.IsNullOrEmpty(path))
                throw new ArgumentNullException(nameof(path));

            using (FileStream file = new FileStream(path, FileMode.Create, FileAccess.Write))
            {
                XmlSerializeInternal(file, o, encoding);
            }
        }

        /// <summary>
        /// 从XML字符串中反序列化对象
        /// </summary>
        /// <typeparam name="T">结果对象类型</typeparam>
        /// <param name="s">包含对象的XML字符串</param>
        /// <param name="encoding">编码方式</param>
        /// <returns>反序列化得到的对象</returns>
        public static T XmlDeserialize<T>(string s, Encoding encoding)
        {
            if (string.IsNullOrEmpty(s))
                throw new ArgumentNullException(nameof(s));
            if (encoding == null)
                throw new ArgumentNullException(nameof(encoding));

            XmlSerializer mySerializer = new XmlSerializer(typeof(T));
            using (MemoryStream ms = new MemoryStream(encoding.GetBytes(s)))
            {
                using (StreamReader sr = new StreamReader(ms, encoding))
                {
                    return (T)mySerializer.Deserialize(sr);
                }
            }
        }

        /// <summary>
        /// 读入一个文件，并按XML的方式反序列化对象。
        /// </summary>
        /// <typeparam name="T">结果对象类型</typeparam>
        /// <param name="path">文件路径</param>
        /// <param name="encoding">编码方式</param>
        public static T XmlDeserializeFromFile<T>(string path, Encoding encoding)
        {
            if (string.IsNullOrEmpty(path))
                throw new ArgumentNullException(nameof(path));
            if (encoding == null)
                throw new ArgumentNullException(nameof(encoding));

            string xml = File.ReadAllText(path, encoding);
            return XmlDeserialize<T>(xml, encoding);
        }


        /// <summary>
        /// XMLs the configuration writer.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obja">The object.</param>
        /// <param name="path">The path.</param>
        public static void XmlConfigWriter<T>(T obja, string path)
        {
            try
            {
                using (StreamWriter sw = new StreamWriter(path))
                {
                    Type t = obja.GetType();
                    XmlSerializer serializer = new XmlSerializer(obja.GetType());
                    serializer.Serialize(sw, obja);
                    sw.Close();
                }
            }
            catch (Exception e)
            {
                e.ToString();
            }
        }


        /// <summary>
        /// XMLs the configuration reader.
        /// </summary>
        /// <param name="filePath">The file path.</param>
        /// <param name="type">The type.</param>
        /// <returns>System.Object.</returns>
        public static object XmlConfigReader(string filePath, Type type)
        {
            object result = null;
            try
            {
                if (File.Exists(filePath))
                {
                    using (StreamReader reader = new StreamReader(filePath))
                    {
                        XmlSerializer xmlSerializer = new XmlSerializer(type);
                        result = xmlSerializer.Deserialize(reader);
                    }
                }
                return result;
            }
            catch (Exception e)
            {
                return e;
            }
        }
    }
}