using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using SevenZip;
using System.Configuration;
using System.Threading;
using System.Text;
using System.IO;
using System.Diagnostics;

/// <summary>
///WebService 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。 
// [System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService {

    private static readonly string filePath = ConfigurationManager.AppSettings["Path"];
    private static readonly string fileNm = ConfigurationManager.AppSettings["FileNm"];
    private string zipFile = "update.zip";
    private bool IsCompressionFinished = false;
    public WebService () {

        //如果使用设计的组件，请取消注释以下行 
        //InitializeComponent(); 
    }


    [WebMethod( Description="压缩文件")]
    public string ZipFile()
    {
        
        string path = Server.MapPath("~");
        if (IntPtr.Size == 4)
        {
            SevenZipCompressor.SetLibraryPath(path + "\\7z.dll");
        }
        else
        {
            SevenZipCompressor.SetLibraryPath(path + "\\7z64.dll");
        }
        //SevenZipCompressor.SetLibraryPath(path + "\\7z.dll");
        zipFile=Guid.NewGuid().ToString()+".zip";
        SevenZipCompressor Compressor = new SevenZipCompressor();
        Compressor.CompressionFinished += new EventHandler<EventArgs>(cmp_CompressionFinished);
        Compressor.ArchiveFormat = OutArchiveFormat.Zip;
        Compressor.CompressionLevel = CompressionLevel.Normal;
        Compressor.CompressDirectory(filePath, path + "\\" + zipFile);
       for(int i=0;i<100000;i++)
       {
            if (IsCompressionFinished)
            {
                break;
            }

            Thread.Sleep(100);
        
       }

       string URL = GetRootPath() + "/" + zipFile;
       return URL;
    }
    [WebMethod(Description = "删除已下载文件")]
    public void deleteFile(string url)
    {
        string[] spliter={"/"};
        url = url.Split(spliter, StringSplitOptions.RemoveEmptyEntries).Last();
        string filePath = Server.MapPath(url);
        File.Delete(filePath);
    }

    [WebMethod(Description = "获取文件版本号")]
    public string getFileVersion()
    {
        FileVersionInfo VersionInfo = FileVersionInfo.GetVersionInfo(filePath + "\\" + fileNm);

        return VersionInfo.FileVersion;
    }
    private void cmp_CompressionFinished(object sender, EventArgs e)
    {
        IsCompressionFinished = true;
    }
    public string GetRootPath()
    {


        string absolutePath = HttpContext.Current.Request.Url.AbsoluteUri;
        string hostNameAndPort = HttpContext.Current.Request.Url.Authority;
        string applicationDir = HttpContext.Current.Request.ApplicationPath;
        StringBuilder sbRequestUrl = new StringBuilder();
        sbRequestUrl.Append(absolutePath.Substring(0, absolutePath.IndexOf(hostNameAndPort)));
        sbRequestUrl.Append(hostNameAndPort);
        if (applicationDir != "/")
        {
            sbRequestUrl.Append(applicationDir);
        }
        return sbRequestUrl.ToString();

    }
}