/// <summary>
/// Load shows asynchronously
/// </summary>
public override async Task LoadShowsAsync(bool reset = false)
{
await LoadingSemaphore.WaitAsync();
if (reset)
{
Shows.Clear();
Page = 0;
VerticalScroll = 0d;
}
var watch = Stopwatch.StartNew();
Page++;
if (Page > 1 && Shows.Count == MaxNumberOfShows)
{
Page--;
LoadingSemaphore.Release();
return;
}
StopLoadingShows();
Logger.Info(
$"Loading page {Page}...");
HasLoadingFailed = false;
try
{
IsLoadingShows = true;
await Task.Run(async() =>
{
var getMoviesWatcher = new Stopwatch();
getMoviesWatcher.Start();
var result =
await ShowService.Discover(Page).ConfigureAwait(false);
getMoviesWatcher.Stop();
var getMoviesEllapsedTime = getMoviesWatcher.ElapsedMilliseconds;
if (reset && getMoviesEllapsedTime < 500)
{
// Wait for VerticalOffset to reach 0 (animation lasts 500ms)
await Task.Delay(500 - (int)getMoviesEllapsedTime).ConfigureAwait(false);
}
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
Shows.AddRange(result.Item1.Except(Shows, new ShowLightComparer()));
IsLoadingShows = false;
IsShowFound = Shows.Any();
CurrentNumberOfShows = Shows.Count;
MaxNumberOfShows = result.nbMovies;
UserService.SyncShowHistory(Shows);
});
}).ConfigureAwait(false);
}
catch (Exception exception)
{
Page--;
Logger.Error(
$"Error while loading page {Page}: {exception.Message}");
HasLoadingFailed = true;
Messenger.Default.Send(new ManageExceptionMessage(exception));
}
finally
{
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Logger.Info(
$"Loaded page {Page} in {elapsedMs} milliseconds.");
LoadingSemaphore.Release();
}
}