public async Task DeleteLocalFilms()
{
if (!await _storageService.FileExistsAsync(FilmCacheFile))
{
return;
}
await _storageService.DeleteFileAsync(FilmCacheFile);
_filmCache.ClearCache(FilmCacheFile);
}
/// <summary>
/// Download the selected backup and replace the current data with it.
/// </summary>
/// <returns></returns>
private async Task DownloadBackupAsync()
{
BackupIsIndeterminate = true;
BackupStatusText = "Perpare download ...";
bool download = true;
var dialog = new MessageDialog("Downloading a Backup will replace all local data.", "OneDrive Backup");
dialog.Commands.Add(new UICommand("Download", null, "Download"));
dialog.Commands.Add(new UICommand("Cancel", null, "Cancel"));
if ((await dialog.ShowAsync()).Id.ToString() == "Cancel")
{
download = false;
}
if (download)
{
var localBackup = await localStorageService.GetFileAsync(uploadZip);
if (localBackup == null)
{
try
{
await zipArchiveService.CompressAsync(DataPath, uploadZip); // TODO: fix deprecation
}
catch
{
// TODO: Add error handling.
}
}
BackupStatusText = $"Download Backup (total: {SelectedOneDriveItem.Size} bytes) ...";
try
{
var backupStream = await oneDriveService.GetContentByIdAsync(SelectedOneDriveItem.Id);
if (backupStream != null)
{
// Delete folder
await localStorageService.DeleteFolderAsync(DataPath);
var folder = await localStorageService.CreateOrGetFileAsync(downloadZip);
using (backupStream)
{
using (var fileStream = await folder.OpenStreamForWriteAsync())
{
backupStream.Position = 0;
fileStream.Position = 0;
await backupStream.CopyToAsync(fileStream);
}
}
try
{
await zipArchiveService.UncompressAsync(downloadZip); // TODO: fix deprecation
}
catch
{
await localStorageService.DeleteFolderAsync(DataPath);
await zipArchiveService.UncompressAsync(uploadZip); // TODO: fix deprecation
await new MessageDialog("An error occured while saving the backup. Old data have been restored.", "OneDrive Backup").ShowAsync();
}
}
else
{
await new MessageDialog("An error occured while downloading a backup. Please try again later.", "OneDrive Backup").ShowAsync();
}
}
catch (Exception)
{
await new MessageDialog("An error occured while downloading a backup. Please try again later.", "OneDrive Backup").ShowAsync();
}
}
await localStorageService.DeleteFileAsync(downloadZip);
SelectedOneDriveItem = null;
BackupIsIndeterminate = false;
BackupStatusText = string.Empty;
}