using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.IO.Packaging;
using Ionic.Zip;
using Bowin.Common.Log;
using SevenZip;
using System.Collections;

namespace Bowin.Common
{
    public class ZIPHelper
    {
        public static IList<string> ExtractFile(string zipFilePath, string targetPath)
        {
            IList<string> result = new List<string>();

            using (Package zip = Package.Open(zipFilePath, FileMode.OpenOrCreate))
            {
                var parts = zip.GetParts();

                foreach (var part in parts)
                {
                    var stream = part.GetStream();
                    byte[] buffer = new byte[stream.Length + 100];
                    long total = 0;
                    for (int offset = 0; ; )
                    {
                        int bytesRead = stream.Read(buffer, offset, 100);
                        if (bytesRead == 0) break;
                        offset += bytesRead;
                        total += bytesRead;
                    }
                    string filePath = targetPath + @"\" + Path.GetFileName(part.Uri.LocalPath);

                    var fileStream = File.Create(filePath);
                    for (int offset = 0; ; )
                    {
                        if (total - (offset + 1) > 100)
                        {
                            fileStream.Write(buffer, offset, 100);
                            offset += 100;
                        }
                        else
                        {
                            fileStream.Write(buffer, offset, Convert.ToInt32(total - (offset + 1)));
                            fileStream.Flush();
                            break;
                        }
                    }

                    result.Add(filePath);
                }
            }

            return result;
        }

        /// <summary>
        /// 解压缩.z文件
        /// </summary>
        /// <param name="rarFilePath"></param>
        /// <returns></returns>
        public static IList<string> ExtractZFile(string zFilePath, string outPutPath)
        {
            LogHelper.WriteLog(LogType.ServiceLog, "----进入ExtractZFile解压方法-----");
            IList<string> result = new List<string>();
            System.Diagnostics.Process proc = new System.Diagnostics.Process();
            string pathOf7Zip = System.Configuration.ConfigurationManager.AppSettings["PathOf7Zip"];
            if (System.Web.HttpContext.Current != null)
            {
                pathOf7Zip = System.Web.HttpContext.Current.Server.MapPath("~/") + pathOf7Zip;
            }
            else
            {
                pathOf7Zip = System.AppDomain.CurrentDomain.BaseDirectory + pathOf7Zip;
            }
            proc.StartInfo.FileName = pathOf7Zip;
            proc.StartInfo.CreateNoWindow = true;
            proc.StartInfo.UseShellExecute = false;
            proc.StartInfo.RedirectStandardOutput = true;
            proc.StartInfo.RedirectStandardInput = true;

            proc.StartInfo.Arguments = "l " + zFilePath;
            LogHelper.WriteLog(LogType.ServiceLog, "----" + proc.StartInfo.Arguments + "-----");
            //bool currentIsFile = false;
            try
            {
                proc.Start();
                if (proc.StandardOutput.EndOfStream)
                {
                    throw new Exception("系统错误！");
                }


                //string buffer = proc.StandardOutput.ReadLine();
                //if (fileText.IndexOf(".jpg") > 0)
                //{
                //    currentIsFile = !currentIsFile;
                //    if (currentIsFile)
                //    {
                //        LogHelper.WriteLog(LogType.ServiceLog, "----result.ADD:" + outPutPath + @"\" + fileText.Split(' ').Last() + "-----");
                //        result.Add(outPutPath + @"\" + fileText.Split(' ').Last());
                //    }
                //}
                string allbuffer = proc.StandardOutput.ReadToEnd();
                proc.WaitForExit();
                LogHelper.WriteLog(LogType.ServiceLog, "**allbuffer:" + allbuffer + "**");
                var phyIndex = allbuffer.IndexOf("Physical Size");
                string tText = allbuffer.Substring(phyIndex);
                string Text1 = tText.Substring(tText.IndexOf("\r\n") + 4);
                string Text2 = Text1.Substring(Text1.IndexOf("\r\n") + 4);
                string Text3 = Text2.Substring(Text2.IndexOf("\r\n") + 4);
                string Text4 = Text3.Remove(Text3.LastIndexOf("\r\n"));
                string Text5 = Text4.Remove(Text4.LastIndexOf("\r\n"));
                string Text6 = Text5.Remove(Text5.LastIndexOf("\r\n"));
                string Text7 = Text6.Replace("\r\n", "#");
                List<string> fileList = Text7.Split('#').ToList();
                foreach (var filestring in fileList)
                {
                    result.Add(outPutPath + @"\" + filestring.Split(' ').Last());
                }
                //if (!proc.WaitForExit(3600000))
                //{

                //}
                proc = new System.Diagnostics.Process();
                proc.StartInfo.FileName = pathOf7Zip;
                proc.StartInfo.CreateNoWindow = true;
                proc.StartInfo.UseShellExecute = false;
                proc.StartInfo.RedirectStandardOutput = false;
                proc.StartInfo.RedirectStandardInput = false;
                proc.EnableRaisingEvents = true;
                proc.StartInfo.Arguments = "e -y -o" + outPutPath + " " + zFilePath;
                proc.Start();
                proc.WaitForExit();
                proc.Close();

            }
            catch (Exception ex)
            {
                LogHelper.WriteLog(LogType.ServiceLog, "Error：" + ex.Message);
                Exception MyEx = new Exception("解压缩出错！" + ex.Message);
            }
            foreach (var a in result)
            {
                LogHelper.WriteLog(LogType.ServiceLog, "----" + a + "-----");
            }
            proc.Dispose();
            return result;
        }

        public static IList<string> Extract7ZFile(string zFilePath, string outPutPath)
        {
            using (FileStream istream = new FileStream(zFilePath, FileMode.Open, FileAccess.Read))
            {
                if (IntPtr.Size == 4)
                {
                    SevenZipCompressor.SetLibraryPath(System.Web.HttpContext.Current.Server.MapPath("~/bin/x86/") + @"7z.dll");
                }
                else
                {
                    SevenZipCompressor.SetLibraryPath(System.Web.HttpContext.Current.Server.MapPath("~/bin/x64/") + @"7z.dll");
                }
                SevenZipExtractor extractor = new SevenZipExtractor(istream);
                extractor.ExtractArchive(outPutPath);    // 全部解压到指定目录
                using (FileStream ostream = new FileStream(outPutPath, FileMode.Create, FileAccess.Write))
                {
                    extractor.ExtractFile(0, ostream);        // 流式解压指定文件
                }
            }
            return new List<string>();
        }
        public static List<string> SevenZip_ExtractStream(string zFilePath, string outPutPath)
        {
            var nameKey = Guid.NewGuid().ToString();
            var fileStream = new FileStream(zFilePath, FileMode.Open, FileAccess.Read);
            var data = new byte[fileStream.Length];
            fileStream.Read(data, 0, data.Length);
            // 直接读取 Stream流格式会报错，所以暂时做一个转义（先临时保存）
            // Invalid archive: open/read error! Is it encrypted and a wrong password was provided?
            // If your archive is an exotic one, it is possible that SevenZipSharp has no signature for its format and thus decided it is TAR by mistake.
            var tmpZipFullName = CreateTmpFile(data, nameKey);
            if (IntPtr.Size == 4)
            {
                var path = System.Web.HttpContext.Current.Server.MapPath("~/bin/x86/") + "7z.dll";
                SevenZipCompressor.SetLibraryPath(path);
            }
            else
            {
                var path = System.Web.HttpContext.Current.Server.MapPath("~/bin/x64/") + @"7z.dll";
                SevenZipCompressor.SetLibraryPath(path);
            }
            using (var zip = new SevenZipExtractor(tmpZipFullName))
            {
                // 解压所有文件到指定目录
                zip.ExtractArchive(outPutPath);
                // 解压单个文件到指定目录
                // zip.ExtractFiles(targetDirectory, 包内的文件索引或者文件名);
                // 包内单个文件读取到字节缓冲区
                //foreach (var entry in zip.ArchiveFileData)
                //{
                //    using (var memoryStream = new MemoryStream())
                //    {
                //        zip.ExtractFile(entry.FileName, memoryStream);
                //        var entryBuffer = new byte[memoryStream.Length];
                //        memoryStream.Position = 0;
                //        memoryStream.Read(entryBuffer, 0, entryBuffer.Length);
                //    }
                //}
                // 解压单个文件到指定目录（允许改文件名，以流方式写入）
                //foreach (var entry in zip.ArchiveFileData)
                //        {
                //            var newFullName = System.Web.HttpContext.Current.Server.MapPath("~/Content/DownFile6/") + entry.FileName;
                //            var newPath = Path.GetDirectoryName(newFullName);
                //            if (!string.IsNullOrWhiteSpace(newPath) && !Directory.Exists(newPath))
                //                Directory.CreateDirectory(newPath);
                //            using (var fs = new FileStream(newFullName, FileMode.OpenOrCreate, FileAccess.Write))
                //            {
                //                zip.ExtractFile(entry.FileName, fs); // 将包内的文件以流的方式写入
                //            }
                //        }
            } // enf.of using (var zip = new SevenZipExtractor(tmpZipFullName))
            List<string> list = GetAllFilesbyFolder(outPutPath, "*.jpg", true);
            return list;
        }

        private static string CreateTmpFile(byte[] data, string nameKey)
        {
            // 直接读取 Stream流格式会报错，所以暂时做一个转义（先临时保存）
            // Invalid archive: open/read error! Is it encrypted and a wrong password was provided?
            // If your archive is an exotic one, it is possible that SevenZipSharp has no signature for its format and thus decided it is TAR by mistake.
            var dir = System.Web.HttpContext.Current.Server.MapPath("~/Content/DownFile/");
            var baseFolder = dir + Path.DirectorySeparatorChar + "TmpZip" + Path.DirectorySeparatorChar;
            if (!System.IO.Directory.Exists(baseFolder))
            {
                Directory.CreateDirectory(baseFolder);
            } 
            var tmpZipFullName = string.Format("{0}{1}_{2}.zip", baseFolder, DateTime.Now.ToString("yyyy_MM_dd_HH_mm_ss_fff"), nameKey);
            if (System.IO.File.Exists(tmpZipFullName))
            {
                System.IO.File.Delete(tmpZipFullName);
            }
            using (var fs1 = new FileStream(tmpZipFullName, FileMode.Create, FileAccess.Write))
            {
                fs1.Write(data, 0, data.Length);
            }
            return tmpZipFullName;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="foldername">文件夹名</param>
        /// <param name="filefilter">文件名筛选</param>
        /// <param name="iscontainsubfolder">是否读取后代文件夹中的文件</param>
        /// <returns></returns>
        public static List<string> GetAllFilesbyFolder(string foldername, string filefilter, bool iscontainsubfolder)
        {
            List<string> resarray = new List<string>();
            var files = Directory.GetFiles(foldername, filefilter);
            for (int i = 0; i < files.Length; i++)
            {
                resarray.Add(files[i]);
            }
            if (iscontainsubfolder)
            {
                string[] folders = Directory.GetDirectories(foldername);
                for (int j = 0; j < folders.Length; j++)
                {
                    //遍历所有文件夹
                    List<string> temp = GetAllFilesbyFolder(folders[j], filefilter, iscontainsubfolder);
                    resarray.AddRange(temp);
                }
            }
            return resarray;
        }

        public static string PackageDirectory(string path)
        {
            using (ZipFile zipNew = new ZipFile())
            {
                var pathName = Path.GetFileName(path.TrimEnd('\\'));
                var fileInfos = Directory.GetFiles(path);
                zipNew.UseUnicodeAsNecessary = true;
                //zipNew.
                // add this map file into the "images" directory in the zip archive
                //zip.AddFile("c:\\images\\personal\\7440-N49th.png", "images");
                //// add the report into a different directory in the archive
                //zip.AddFile("c:\\Reports\\2008-Regional-Sales-Report.pdf", "files");
                foreach (var fileInfo in fileInfos)
                {
                    zipNew.AlternateEncodingUsage = ZipOption.AsNecessary;
                    zipNew.AlternateEncoding = Encoding.Unicode;
                    zipNew.AddFile(fileInfo, @"\");
                }
                zipNew.Save(pathName + ".zip");

                return path.TrimEnd('\\') + "\\" + pathName + ".zip";
            }
        }
    }
}