/// <summary>
/// It collect the downloadable files into param GDDownloader variable and
/// it collect the unnecessary files into global deletableFiles variable.
/// </summary>
/// <param name="downloader"></param>
/// <param name="localFolder"></param>
/// <param name="parentId"></param>
private void CollectDownSynchronizerData(GDDownloader downloader, string localFolder, string parentId)
{
List <string> unnecessaryFiles = getLocalFiles(localFolder);
IEnumerable <Google.Apis.Drive.v3.Data.File> files = getGDFiles(parentId);
foreach (Google.Apis.Drive.v3.Data.File file in files)
{
if (file.MimeType == "application/vnd.google-apps.folder")
{
string folderPath = localFolder + "\\" + file.Name;
unnecessaryFiles.Remove(folderPath);
CollectDownSynchronizerData(downloader, folderPath, file.Id);
}
else
{
if (file.FileExtension == "zip")
{
string fileName = localFolder + "\\" + file.Name.Substring(0, file.Name.Length - 4);
if (unnecessaryFiles.Contains(fileName) && System.IO.File.GetLastWriteTime(fileName) >= file.ModifiedTime.Value)
{
unnecessaryFiles.Remove(fileName);
}
else
{
downloader.Add(new DownloadableFile(file, localFolder));
}
}
}
}
AddToDeletableFile(unnecessaryFiles);
}
/// <summary>
/// It downloads the files, which is needed and deletes the unnecessary files.
/// It doesn't delete those, which were added to ExceptionFiles.
/// </summary>
/// <param name="localFolder"></param>
/// <param name="driveFolder"></param>
/// <param name="password">Password of zip files.</param>
public override void Sync(string localFolder, string driveFolder, string password)
{
if (string.IsNullOrEmpty(localFolder))
{
throw new ArgumentNullException("localFolder");
}
if (string.IsNullOrEmpty(driveFolder))
{
throw new ArgumentNullException("driveFolder");
}
if (string.IsNullOrEmpty(password))
{
throw new ArgumentNullException("password");
}
string parentId = ConvertGDFolderToGDParentId(driveFolder);
if (parentId == null)
{
throw new Exception("NotExistPath");
}
localFolder += "\\" + GetFileName(driveFolder);
GDDownloader downloader = new GDDownloader(Service);
downloader.StreamStatusEvent += CatchStatus;
CollectDownSynchronizerData(downloader, localFolder, parentId);
CallFullSizeEvent(downloader.StreamdableBytes);
DeleteFiles();
try
{
foreach (string file in downloader.StartStream())
{
UnZipFile(file, password);
}
}
catch (Exception e)
{
DeleteZipFiles(localFolder);
throw e;
}
}