public static async Task <DownloadManager> Create(RouteListing listing, CancellationToken cancellationToken)
{
listing.Progress = 0;
listing.ShowProgress = true;
DownloadManager result = new DownloadManager();
result.Listing = listing;
result._Route = result.Listing.Route;
var stopsAndShapes = await ApiLayer.GetStopsAndShapesForRoute(result.Listing.Route.ID, cancellationToken);
result._Shapes = stopsAndShapes.Item2;
result._StopsPending = new ObservableCollection <BusStop>(stopsAndShapes.Item1);
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
result.Initialize();
result._TotalStops = result.StopsPending.Count;
DownloadsInProgress.Add(result);
if (!FileManager.PendingDownloads.Any(item => item.First() == result.Route.ID))
{
List <string> pend = new List <string>()
{
result.Route.ID
};
pend.AddRange(result.StopsPending.Select(stop => stop.ID));
FileManager.PendingDownloads.Add(pend);
await listing.RefreshIsDownloaded();
await FileManager.SavePendingDownloads();
}
return(result);
}
public static async Task <Tuple <Tuple <BusStop[], string[]>, DataRetrievalMessage> > GetStopsAndShapesForRoute(string routeId, DataRetrievalOptions options, CancellationToken cancellationToken)
{
return(await CloudOrLocal(() => ApiLayer.GetStopsAndShapesForRoute(routeId, cancellationToken), () => FileManager.GetStopsAndShapesForRouteFromCache(routeId), options, typeof(OperationCanceledException)));
}