protected void OnFailed(DownloaderError error, GeotaggingResult.Result geotaggingResult)
{
DebugUtil.Log(() => "PictureSyncManager: OnFailed" + error);
Failed?.Invoke(error, geotaggingResult);
}
private async Task DownloadToSave(DownloadRequest req)
{
DebugUtil.LogSensitive(() => "Download picture: {0}", req.Uri.OriginalString);
try
{
var geoResult = GeotaggingResult.Result.NotRequested;
var task = HttpClient.GetAsync(req.Uri, HttpCompletionOption.ResponseContentRead);
HttpResponseMessage res;
try
{
res = await task;
}
catch (Exception e)
{
req.Error?.Invoke(DownloaderError.Network, geoResult);
req.CompletionSource?.TrySetException(e);
return;
}
if (req.CancellationTokenSource?.IsCancellationRequested ?? false)
{
req.CompletionSource?.TrySetCanceled(req.CancellationTokenSource.Token);
req.Error?.Invoke(DownloaderError.Cancelled, geoResult);
return;
}
var imageStream = (await res.Content.ReadAsInputStreamAsync()).AsStreamForRead();
if (req.Mediatype == Mediatype.Image)
{
if (ApplicationSettings.GetInstance().GeotagEnabled)
{
var position = await GeolocatorManager.INSTANCE.GetLatestPosition();
if (position == null)
{
geoResult = GeotaggingResult.Result.FailedToAcquireLocation;
}
else
{
var result = await GeopositionUtil.AddGeotag(imageStream, position);
imageStream = result.Image;
geoResult = result.OperationResult;
}
}
}
if (req.CancellationTokenSource?.IsCancellationRequested ?? false)
{
req.CompletionSource?.TrySetCanceled(req.CancellationTokenSource.Token);
req.Error?.Invoke(DownloaderError.Cancelled, geoResult);
return;
}
using (imageStream)
{
StorageFolder rootFolder;
switch (req.Mediatype)
{
case Mediatype.Image:
rootFolder = KnownFolders.PicturesLibrary;
break;
case Mediatype.Video:
rootFolder = KnownFolders.PicturesLibrary;
// Use Pictures folder according to the behavior of built-in Camera apps
// rootFolder = KnownFolders.VideosLibrary;
break;
default:
req.CompletionSource?.TrySetException(new NotSupportedException(req.Mediatype + " is not supported"));
return;
}
var folder = await rootFolder.CreateFolderAsync(DIRECTORY_NAME, CreationCollisionOption.OpenIfExists);
var filename = string.Format(req.NameBase + "_{0:yyyyMMdd_HHmmss}" + req.FileExtension, DateTime.Now);
var file = await folder.CreateFileAsync(filename, CreationCollisionOption.GenerateUniqueName);
using (var outStream = await file.OpenStreamForWriteAsync())
{
if (req.CancellationTokenSource == null)
{
await imageStream.CopyToAsync(outStream);
}
else
{
await imageStream.CopyToAsync(outStream, 81920, req.CancellationTokenSource.Token);
}
}
req.Completed?.Invoke(folder, file, geoResult);
req.CompletionSource?.TrySetResult(true);
return;
}
}
catch (Exception e)
{
DebugUtil.Log(() => e.Message);
DebugUtil.Log(() => e.StackTrace);
req.Error?.Invoke(DownloaderError.Unknown, GeotaggingResult.Result.NotRequested); // TODO
req.CompletionSource?.TrySetException(e);
}
}
protected void OnFetched(StorageFolder folder, StorageFile file, GeotaggingResult.Result geotaggingResult)
{
DebugUtil.Log(() => "PictureSyncManager: OnFetched");
Fetched?.Invoke(folder, file, geotaggingResult);
}
private void Geolocator_PositionChanged(Geolocator sender, PositionChangedEventArgs args)
{
DebugUtil.Log(() => { return("Location updated: " + args.Position.Coordinate.Longitude + " , " + args.Position.Coordinate.Latitude); });
LatestPosition = args.Position;
}