using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Zip;
using System.Text.RegularExpressions;
using ICSharpCode.SharpZipLib.Checksum;
using System.IO.Compression;

namespace KPlan.RefActions {
   public class ZipHelper {
      #region 压缩  
      /* private static string get_uft8(string unicodeString)
       {


            Encoding ec = Encoding.GetEncoding("iso-8859-1");
            byte[] btArr = ec.GetBytes(unicodeString);
            string strBuffer = Encoding.Default.GetString(btArr);
           return strBuffer;
       }*/
      /// <summary>   
      /// 递归压缩文件夹的内部方法   
      /// </summary>   
      /// <param name="folderToZip">要压缩的文件夹路径</param>   
      /// <param name="zipStream">压缩输出流</param>   
      /// <param name="parentFolderName">此文件夹的上级文件夹</param>   
      /// <returns></returns>   
      /// 
      private static bool ZipDirectory(string folderToZip, ZipOutputStream zipStream, string parentFolderName, string skipFolder) {
         // 出现乱码就是因为CodePage不对



         bool result = true;
         string[] folders, files;
         ZipEntry ent = null;
         FileStream fs = null;
         Crc32 crc = new Crc32();

         string[] skipFolders = Regex.Split(skipFolder, "@@", RegexOptions.IgnoreCase);

         try {

            Console.WriteLine("parentFolderName----------------" + parentFolderName);
            Console.WriteLine("folderToZip----------------" + folderToZip);
            // 出现乱码就是因为CodePage不对
            /*
            FileStream fs1 = new FileStream("D:\\ss.txt", FileMode.Open);
            StreamWriter sw = new StreamWriter(fs1);
            //开始写入
            sw.Write(parentFolderName);
            sw.Write(folderToZip);
            //清空缓冲区
            sw.Flush();
            //关闭流
            sw.Close();
            fs1.Close();*/
            string[] sArray = Regex.Split(folderToZip, "Data", RegexOptions.IgnoreCase);
            //ent = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/"));
            string newFoldToZip = "";

            if (sArray.Length == 1) {
               newFoldToZip = "Data";
            }
            else {
               newFoldToZip = "Data" + sArray[1];

            }
            string newParentFoldToZip = "";
            if (parentFolderName.Length > 0) {
               sArray = Regex.Split(parentFolderName, "Data", RegexOptions.IgnoreCase);
               if (sArray.Length == 1) {
                  newParentFoldToZip = "Data\\";
               }
               else {
                  newParentFoldToZip = "Data" + sArray[1];
               }

            }
            //Console.WriteLine("------------------1--------"+Path.GetFileName(newFoldToZip) + "/");
            //Console.WriteLine("-------------------2-------"+Path.Combine(parentFolderName, Path.GetFileName(newFoldToZip) + "/"));
            ent = new ZipEntry(Path.Combine(newParentFoldToZip, Path.GetFileName(newFoldToZip) + "/"));
            /* Encoding gbk = Encoding.GetEncoding("gbk");

             ICSharpCode.SharpZipLib.Zip.ZipConstants.DefaultCodePage = gbk.CodePage; */
            zipStream.PutNextEntry(ent);
            zipStream.Flush();

            files = Directory.GetFiles(folderToZip);
            foreach (string file in files) {
               if (skipFolders.Contains<string>(Path.GetFileName(file))) {
                  continue;
               }

               fs = File.OpenRead(file);

               byte[] buffer = new byte[fs.Length];
               fs.Read(buffer, 0, buffer.Length);
               //ent = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/" + Path.GetFileName(file)));
               string newParentFoldToZip2 = "";
               if (parentFolderName.Length > 0) {
                  sArray = Regex.Split(parentFolderName, "Data", RegexOptions.IgnoreCase);
                  if (sArray.Length == 1) {
                     newParentFoldToZip2 = "Data\\";
                  }
                  else {
                     newParentFoldToZip2 = "Data" + sArray[1];
                  }

               }
               //Console.WriteLine("------------------3--------" + Path.GetFileName(newFoldToZip) + "/");
               //Console.WriteLine("------------------4--------" + Path.Combine(newParentFoldToZip2, Path.GetFileName(newFoldToZip) + "/"));
               ent = new ZipEntry(Path.Combine(newParentFoldToZip2, Path.GetFileName(newFoldToZip) + "/" + Path.GetFileName(file)));
               ent.DateTime = DateTime.Now;
               ent.Size = fs.Length;

               fs.Close();

               crc.Reset();
               crc.Update(buffer);

               ent.Crc = crc.Value;
               zipStream.PutNextEntry(ent);
               zipStream.Write(buffer, 0, buffer.Length);
            }

         }
         catch {
            result = false;
         }
         finally {
            if (fs != null) {
               fs.Close();
               fs.Dispose();
            }
            if (ent != null) {
               ent = null;
            }
            GC.Collect();
            GC.Collect(1);
         }

         folders = Directory.GetDirectories(folderToZip);
         foreach (string folder in folders) {
            if (skipFolders.Contains<string>(Path.GetFileName(folder))) {
               continue;
            }

            if (!ZipDirectory(folder, zipStream, folderToZip, skipFolder))
               return false;
         }

         return result;
      }

      /// <summary>   
      /// 压缩文件夹    
      /// </summary>   
      /// <param name="folderToZip">要压缩的文件夹路径</param>   
      /// <param name="zipedFile">压缩文件完整路径</param>   
      /// <param name="password">密码</param>   
      /// <returns>是否压缩成功</returns>   
      public static bool ZipDirectory(string folderToZip, string zipedFile, string password, string skipFolder) {



         bool result = false;

         Console.WriteLine("folderToZip-------------" + folderToZip);

         if (!Directory.Exists(folderToZip)) {
            Console.WriteLine("不存在----------");
            return result;
         }

         /*   Encoding gbk = Encoding.GetEncoding("gbk");

           ICSharpCode.SharpZipLib.Zip.ZipConstants.DefaultCodePage = gbk.CodePage; */
         ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipedFile));
         Console.WriteLine("zipedFile-------------" + zipedFile);
         zipStream.SetLevel(6);
         if (!string.IsNullOrEmpty(password)) zipStream.Password = password;

         Console.WriteLine("skipFolder-------------" + skipFolder);
         result = ZipDirectory(folderToZip, zipStream, "", skipFolder);

         zipStream.Finish();
         zipStream.Close();

         return result;
      }

      /// <summary>   
      /// 压缩文件夹   
      /// </summary>   
      /// <param name="folderToZip">要压缩的文件夹路径</param>   
      /// <param name="zipedFile">压缩文件完整路径</param>   
      /// <returns>是否压缩成功</returns>   
      public static bool ZipDirectory(string folderToZip, string zipedFile, string skipFolder) {
         bool result = ZipDirectory(folderToZip, zipedFile, null, skipFolder);
         return result;
      }

      /// <summary>   
      /// 压缩文件   
      /// </summary>   
      /// <param name="fileToZip">要压缩的文件全名</param>   
      /// <param name="zipedFile">压缩后的文件名</param>   
      /// <param name="password">密码</param>   
      /// <returns>压缩结果</returns>   
      public static bool ZipFile(string fileToZip, string zipedFile, string password) {
         bool result = true;
         ZipOutputStream zipStream = null;
         FileStream fs = null;
         ZipEntry ent = null;

         if (!File.Exists(fileToZip))
            return false;

         try {
            fs = File.OpenRead(fileToZip);
            byte[] buffer = new byte[fs.Length];
            fs.Read(buffer, 0, buffer.Length);
            fs.Close();

            fs = File.Create(zipedFile);
            zipStream = new ZipOutputStream(fs);
            if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
            ent = new ZipEntry(Path.GetFileName(fileToZip));
            zipStream.PutNextEntry(ent);
            zipStream.SetLevel(6);

            zipStream.Write(buffer, 0, buffer.Length);

         }
         catch {
            result = false;
         }
         finally {
            if (zipStream != null) {
               zipStream.Finish();
               zipStream.Close();
            }
            if (ent != null) {
               ent = null;
            }
            if (fs != null) {
               fs.Close();
               fs.Dispose();
            }
         }
         GC.Collect();
         GC.Collect(1);

         return result;
      }

      /// <summary>   
      /// 压缩文件   
      /// </summary>   
      /// <param name="fileToZip">要压缩的文件全名</param>   
      /// <param name="zipedFile">压缩后的文件名</param>   
      /// <returns>压缩结果</returns>   
      public static bool ZipFile(string fileToZip, string zipedFile) {
         bool result = ZipFile(fileToZip, zipedFile, null);
         return result;
      }

      /// <summary>   
      /// 压缩文件或文件夹   
      /// </summary>   
      /// <param name="fileToZip">要压缩的路径</param>   
      /// <param name="zipedFile">压缩后的文件名</param>   
      /// <param name="password">密码</param>   
      /// <returns>压缩结果</returns>   
      public static bool Zip(string fileToZip, string zipedFile, string password) {
         bool result = false;
         if (Directory.Exists(fileToZip))
            result = ZipDirectory(fileToZip, zipedFile, password, null);
         else if (File.Exists(fileToZip))
            result = ZipFile(fileToZip, zipedFile, password);

         return result;
      }

      /// <summary>   
      /// 压缩文件或文件夹   
      /// </summary>   
      /// <param name="fileToZip">要压缩的路径</param>   
      /// <param name="zipedFile">压缩后的文件名</param>   
      /// <returns>压缩结果</returns>   
      public static bool Zip(string fileToZip, string zipedFile) {
         bool result = Zip(fileToZip, zipedFile, null);
         return result;

      }

      #endregion

      #region 解压  

      /// <summary>   
      /// 解压功能(解压压缩文件到指定目录)   
      /// </summary>   
      /// <param name="fileToUnZip">待解压的文件</param>   
      /// <param name="zipedFolder">指定解压目标目录</param>   
      /// <param name="password">密码</param>   
      /// <returns>解压结果</returns>   
      public static bool UnZip(string fileToUnZip, string zipedFolder, string password) {
         bool result = true;
         FileStream fs = null;
         ZipInputStream zipStream = null;
         ZipEntry ent = null;
         string fileName;

         if (!File.Exists(fileToUnZip))
            return false;

         if (!Directory.Exists(zipedFolder))
            Directory.CreateDirectory(zipedFolder);

         try {
            zipStream = new ZipInputStream(File.OpenRead(fileToUnZip));
            if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
            while ((ent = zipStream.GetNextEntry()) != null) {
               if (!string.IsNullOrEmpty(ent.Name)) {
                  fileName = Path.Combine(zipedFolder, ent.Name);
                  fileName = fileName.Replace('/', '\\');//change by Mr.HopeGi   

                  if (fileName.EndsWith("\\")) {
                     Directory.CreateDirectory(fileName);
                     continue;
                  }

                  fs = File.Create(fileName);
                  int size = 2048;
                  byte[] data = new byte[size];
                  while (true) {
                     size = zipStream.Read(data, 0, data.Length);
                     if (size > 0)
                        fs.Write(data, 0, data.Length);
                     else
                        break;
                  }
               }
            }
         }
         catch {
            result = false;
         }
         finally {
            if (fs != null) {
               fs.Close();
               fs.Dispose();
            }
            if (zipStream != null) {
               zipStream.Close();
               zipStream.Dispose();
            }
            if (ent != null) {
               ent = null;
            }
            GC.Collect();
            GC.Collect(1);
         }
         return result;
      }
      public static bool UnZips(string zipFilePath, string unZipDir) {
         if (zipFilePath == string.Empty) {
            throw new Exception("压缩文件不能为空！");
         }
         if (!File.Exists(zipFilePath)) {
            throw new FileNotFoundException("压缩文件不存在！");
         }
         //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹  
         if (unZipDir == string.Empty)
            unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
         if (!unZipDir.EndsWith("\\"))
            unZipDir += "\\";

         Console.WriteLine("解压目录-------------------------" + unZipDir);
         if (!Directory.Exists(unZipDir))
            Directory.CreateDirectory(unZipDir);
         Util.KUtil.Log("解压文件："+zipFilePath+" -> "+unZipDir);
         KPlan.Util.KUtil.UnZipDirectory(zipFilePath, unZipDir);
         /*ZipArchive archive = null;
         using (archive = System.IO.Compression.ZipFile.OpenRead(zipFilePath)){
            foreach(ZipArchiveEntry entry in archive.Entries) {
               entry.ExtractToFile(Path.Combine(unZipDir, entry.FullName), true);
            }
         }*/

         //System.IO.Compression.ZipFile.ExtractToDirectory(zipFilePath, unZipDir);
         /*using (var s = new ZipInputStream(File.OpenRead(zipFilePath))) {

            ZipEntry theEntry;
            while ((theEntry = s.GetNextEntry()) != null) {
               string directoryName = Path.GetDirectoryName(theEntry.Name);
               string fileName = Path.GetFileName(theEntry.Name);
               Util.KUtil.Log(directoryName + "||" + fileName);
               if (!string.IsNullOrEmpty(directoryName)) {
                  Directory.CreateDirectory(unZipDir + directoryName);
               }
               if (directoryName != null && !directoryName.EndsWith("/")) {
               }
               if (fileName != String.Empty) {
                  using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name)) {

                     int size;
                     byte[] data = new byte[2048];
                     while (true) {
                        size = s.Read(data, 0, data.Length);
                        if (size > 0) {
                           streamWriter.Write(data, 0, size);
                        }
                        else {
                           break;
                        }
                     }
                  }
               }
            }
         }*/
         return true;
      }

      public static bool UnZipVoid(string FileToUpZip, string ZipedFolder) {
         if (!File.Exists(FileToUpZip)) {
            return false;
         }

         if (!Directory.Exists(ZipedFolder)) {
            Directory.CreateDirectory(ZipedFolder);
         }

         ZipInputStream sInput = new ZipInputStream(File.OpenRead(FileToUpZip));
         try {
            ZipEntry theEntry;
            while ((theEntry = sInput.GetNextEntry()) != null) {
               if (theEntry.Name != String.Empty) {
                  string fileName = Path.Combine(ZipedFolder, theEntry.Name);
                  //判断文件路径是否是文件夹
                  if (fileName.EndsWith("/") || fileName.EndsWith("\\")) {
                     Directory.CreateDirectory(fileName);
                     continue;
                  }

                  string newDir = Path.GetDirectoryName(fileName);
                  if (!Directory.Exists(newDir)) {
                     Directory.CreateDirectory(newDir);
                  }

                  FileStream streamWriter = File.Create(fileName);
                  try {
                     int size = 2048;
                     byte[] data = new byte[2048];
                     while (true) {
                        size = sInput.Read(data, 0, data.Length);
                        if (size <= 0) {
                           break;
                        }
                        streamWriter.Write(data, 0, size);
                     }
                  }
                  finally {
                     streamWriter.Close();
                     streamWriter.Dispose();
                     streamWriter = null;
                  }
               }
            }
         }
         finally {
            sInput.Close();
            sInput.Dispose();
            sInput = null;
         }
         return true;
      }


      /// <summary>   
      /// 解压功能(解压压缩文件到指定目录)   
      /// </summary>   
      /// <param name="fileToUnZip">待解压的文件</param>   
      /// <param name="zipedFolder">指定解压目标目录</param>   
      /// <returns>解压结果</returns>   
      public static bool UnZip(string fileToUnZip, string zipedFolder) {
         bool result = UnZip(fileToUnZip, zipedFolder, null);
         return result;
      }

      #endregion
   }

}