private bool IsExceptionHandled(string title, Exception ex, DownloadOperation download = null)
{
WebErrorStatus error = BackgroundTransferError.GetStatus(ex.HResult);
if (error == WebErrorStatus.Unknown)
{
return(false);
}
string errorMsg = null;
if (download == null)
{
Debug.WriteLine(String.Format(CultureInfo.CurrentCulture, "Error: {0}: {1}", title, error));
errorMsg = String.Format(CultureInfo.CurrentCulture, "{0}: {1}", title, error);
}
else
{
Debug.WriteLine(String.Format(CultureInfo.CurrentCulture, "Error: {0} - {1}: {2}", download.Guid, title, error));
errorMsg = String.Format(CultureInfo.CurrentCulture, "{0} - {1}: {2}", download.Guid, title, error);
}
// Event calling for status msg
DownloadStatusMessageChanged?.Invoke("Error", download.ResultFile.Name);
return(true);
}
private async Task HandleDownloadAsync(DownloadOperation download, bool start)
{
try
{
Debug.WriteLine("Running: " + download.Guid);
// Store the download so we can pause/resume.
activeDownloads.Add(download);
Progress <DownloadOperation> progressCallback = new Progress <DownloadOperation>(DownloadProgress);
if (start) // Start the download and attach a progress handler.
{
await download.StartAsync().AsTask(cts.Token, progressCallback);
}
else // The download was already running when the application started, re-attach the progress handler.
{
await download.AttachAsync().AsTask(cts.Token, progressCallback);
}
ResponseInformation response = download.GetResponseInformation();
Debug.WriteLine(String.Format(CultureInfo.CurrentCulture, "Completed: {0}, Status Code: {1}", download.Guid, response.StatusCode));
// Move the downloaded file from Temporary folder to the selected folder
if (StorageFileDictionary.ContainsKey(download.ResultFile.Name))
{
StorageFile file_selectedLocation = StorageFileDictionary[download.ResultFile.Name];
// convert item to mp3 first
if (IsMusicDictionary[download.ResultFile.Name])
{
Debug.WriteLine("Converting video to mp3: " + download.Guid);
// Others in [File]
string OriginalFileName = download.ResultFile.Name;
AudioEncodingQuality audioQuality = AudioQualityDictionary[download.ResultFile.Name];
bool ism4a = IsisM4ADictionary[download.ResultFile.Name];
IStorageFile result = null;
VideoMP3Transcoder extractor = new VideoMP3Transcoder(OriginalFileName, download.ResultFile, audioQuality, ism4a);
result = await Task.Run(async() =>
await extractor.ConvertToMP3()
);
Debug.WriteLine("Result: " + result != null);
try
{
await result.MoveAndReplaceAsync(file_selectedLocation);
}
catch (Exception e)
{
Debug.WriteLine(e.Message.ToString());
}
if (result != null)
{
Debug.WriteLine("Done converting to mp3: " + download.Guid);
}
else
{
Debug.WriteLine("Error converting to mp3: " + download.Guid);
}
}
else
{
await download.ResultFile.MoveAndReplaceAsync(StorageFileDictionary[download.ResultFile.Name]);
}
}
}
catch (TaskCanceledException)
{
Debug.WriteLine("Canceled: " + download.Guid);
}
catch (Exception ex)
{
if (!IsExceptionHandled("Execution error", ex, download))
{
throw;
}
}
finally
{
activeDownloads.Remove(download);
// Event calling for status msg
DownloadStatusMessageChanged?.Invoke("Download complete", download.ResultFile.Name);
}
}