public async Task CheckDownloadStatusAsync(IReadOnlyList <DownloadOperation> operations)
{
ImageItem.Init();
var task = ImageItem.DownloadBitmapForListAsync();
var folder = await AppSettings.Instance.GetSavingFolderAsync();
var item = await folder.TryGetItemAsync(ImageItem.GetFileNameForDownloading());
if (item != null)
{
if (item is StorageFile file)
{
_resultFile = file;
var prop = await _resultFile.GetBasicPropertiesAsync();
if (prop.Size > 0)
{
Progress = 100;
}
}
}
if (Progress != 100)
{
var downloadOperation = operations.Where(s => s.Guid == DownloadOperationGUID).FirstOrDefault();
if (downloadOperation != null)
{
var progress = new Progress <DownloadOperation>();
progress.ProgressChanged += Progress_ProgressChanged;
_cts = new CancellationTokenSource();
await downloadOperation.StartAsync().AsTask(_cts.Token, progress);
}
else
{
DisplayIndex = (int)DisplayMenu.Retry;
}
}
}
public async Task <bool> DownloadFullImageAsync(CancellationTokenSource cts)
{
_cts = cts;
_tcs = new TaskCompletionSource <int>();
var url = ImageItem.GetSaveImageUrlFromSettings();
if (string.IsNullOrEmpty(url))
{
return(false);
}
DisplayIndex = (int)DisplayMenu.Downloading;
ImageItem.DownloadStatus = Common.DownloadStatus.Downloading;
StorageFolder savedFolder = null;
StorageFile savedFile = null;
try
{
savedFolder = await AppSettings.Instance.GetSavingFolderAsync();
savedFile = await savedFolder.CreateFileAsync(ImageItem.GetFileNameForDownloading(), CreationCollisionOption.OpenIfExists);
}
catch (Exception e)
{
await Logger.LogAsync(e);
ToastService.SendToast("No right to create file for writing. Please check your security settings. \n If necessary, please contact me via about page.", 5000);
return(false);
}
var backgroundDownloader = new BackgroundDownloader()
{
SuccessToastNotification = ToastHelper.CreateToastNotification("Saved:D",
$"Find it in {savedFolder.Path}.", savedFile.Path)
};
var downloadOperation = backgroundDownloader.CreateDownload(new Uri(url), savedFile);
downloadOperation.Priority = BackgroundTransferPriority.High;
DownloadOperationGUID = downloadOperation.Guid;
_tcs.TrySetResult(0);
ToastService.SendToast("Downloading in background...", 2000);
try
{
DownloadStatus = "DOWNLOADING";
Progress = 0;
var progress = new Progress <DownloadOperation>();
progress.ProgressChanged += Progress_ProgressChanged;
await downloadOperation.StartAsync().AsTask(_cts.Token, progress);
return(true);
}
catch (TaskCanceledException)
{
await downloadOperation.ResultFile.DeleteAsync();
ToastService.SendToast("Download has been cancelled.");
DownloadStatus = "";
DisplayIndex = (int)DisplayMenu.Retry;
ImageItem.DownloadStatus = Common.DownloadStatus.Pending;
throw;
}
catch (Exception e)
{
ImageItem.DownloadStatus = Common.DownloadStatus.Pending;
await Logger.LogAsync(e);
ToastService.SendToast("ERROR" + e.Message, 2000);
return(false);
}
}
public async Task <bool> DownloadFullImageAsync(CancellationTokenSource cts)
{
_cts = cts;
_tcs = new TaskCompletionSource <int>();
var url = ImageItem.GetSaveImageUrlFromSettings();
if (string.IsNullOrEmpty(url))
{
return(false);
}
DisplayIndex = (int)DisplayMenu.Downloading;
ImageItem.DownloadStatus = Common.DownloadStatus.Downloading;
StorageFolder savedFolder = null;
StorageFile savedFile = null;
try
{
savedFolder = await AppSettings.GetSavingFolderAsync();
savedFile = await savedFolder.CreateFileAsync(ImageItem.GetFileNameForDownloading(), CreationCollisionOption.OpenIfExists);
}
catch (Exception e)
{
await Logger.LogAsync(e);
ToastService.SendToast(ResourceLoader.GetForCurrentView().GetString("PermissonError"), 5000);
return(false);
}
var locationUrl = ImageItem.GetDownloadLocationUrl();
if (locationUrl != null)
{
var reportTask = ReportDownloadAsync(locationUrl);
}
var backgroundDownloader = new BackgroundDownloader()
{
SuccessToastNotification = ToastHelper.CreateToastNotification(
ResourceLoader.GetForCurrentView().GetString("SavedTitle"),
savedFolder.Path, savedFile.Path)
};
var downloadOperation = backgroundDownloader.CreateDownload(new Uri(url), savedFile);
downloadOperation.Priority = BackgroundTransferPriority.High;
DownloadOperationGUID = downloadOperation.Guid;
_tcs.TrySetResult(0);
ToastService.SendToast(ResourceLoader.GetForCurrentView().GetString("DownloadingHint"), 2000);
try
{
DownloadStatus = ResourceLoader.GetForCurrentView().GetString("DownloadingStatus");
Progress = 0;
var progress = new Progress <DownloadOperation>();
progress.ProgressChanged += Progress_ProgressChanged;
await downloadOperation.StartAsync().AsTask(_cts.Token, progress);
return(true);
}
catch (TaskCanceledException)
{
await downloadOperation.ResultFile.DeleteAsync();
ToastService.SendToast(ResourceLoader.GetForCurrentView().GetString("CancelStatus"));
throw;
}
catch (Exception e)
{
ReportFailure();
await Logger.LogAsync(e);
ToastService.SendToast(ResourceLoader.GetForCurrentView().GetString("ErrorStatus") + e.Message, 3000);
return(false);
}
}