/// <summary>
/// Load movies asynchronously
/// </summary>
public override async Task LoadShowsAsync(bool reset = false)
{
await LoadingSemaphore.WaitAsync();
StopLoadingShows();
if (reset)
{
Shows.Clear();
Page = 0;
}
var watch = Stopwatch.StartNew();
Page++;
if (Page > 1 && Shows.Count == MaxNumberOfShows)
{
Page--;
LoadingSemaphore.Release();
return;
}
Logger.Info(
$"Loading shows favorite page {Page}...");
HasLoadingFailed = false;
try
{
IsLoadingShows = true;
var imdbIds =
await UserService.GetFavoritesShows(Page);
if (!NeedSync)
{
var shows = new List <ShowLightJson>();
await imdbIds.shows.ParallelForEachAsync(async imdbId =>
{
try
{
var show = await ShowService.GetShowLightAsync(imdbId);
if (show != null)
{
show.IsFavorite = true;
shows.Add(show);
}
}
catch (Exception ex)
{
Logger.Error(ex);
}
});
var updatedShows = shows.OrderBy(a => a.Title)
.Where(a => (Genre == null || a.Genres.Contains(Genre.EnglishName)) &&
a.Rating.Percentage >= Rating * 10);
foreach (var show in updatedShows.Except(Shows.ToList(), new ShowLightComparer()))
{
var pair = Shows
.Select((value, index) => new { value, index })
.FirstOrDefault(x => string.CompareOrdinal(x.value.Title, show.Title) > 0);
if (pair == null)
{
Shows.Add(show);
}
else
{
Shows.Insert(pair.index, show);
}
}
}
else
{
var showsToDelete = Shows.Select(a => a.ImdbId).Except(imdbIds.allShows);
var showsToAdd = imdbIds.allShows.Except(Shows.Select(a => a.ImdbId));
foreach (var movie in showsToDelete.ToList())
{
Shows.Remove(Shows.FirstOrDefault(a => a.ImdbId == movie));
}
var shows = showsToAdd.ToList();
var showsToAddAndToOrder = new List <ShowLightJson>();
await shows.ParallelForEachAsync(async imdbId =>
{
try
{
var show = await ShowService.GetShowLightAsync(imdbId);
if ((Genre == null || show.Genres.Contains(Genre.EnglishName)) && show.Rating.Percentage >= Rating * 10)
{
showsToAddAndToOrder.Add(show);
}
}
catch (Exception ex)
{
Logger.Error(ex);
}
});
foreach (var show in showsToAddAndToOrder.Except(Shows.ToList(), new ShowLightComparer()))
{
var pair = Shows
.Select((value, index) => new { value, index })
.FirstOrDefault(x => string.CompareOrdinal(x.value.Title, show.Title) > 0);
if (pair == null)
{
Shows.Add(show);
}
else
{
Shows.Insert(pair.index, show);
}
}
}
IsLoadingShows = false;
IsShowFound = Shows.Any();
CurrentNumberOfShows = Shows.Count;
MaxNumberOfShows = imdbIds.nbShows;
await UserService.SyncShowHistoryAsync(Shows).ConfigureAwait(false);
}
catch (Exception exception)
{
Page--;
Logger.Error(
$"Error while loading shows favorite page {Page}: {exception.Message}");
HasLoadingFailed = true;
Messenger.Default.Send(new ManageExceptionMessage(exception));
}
finally
{
NeedSync = false;
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Logger.Info(
$"Loaded shows favorite page {Page} in {elapsedMs} milliseconds.");
LoadingSemaphore.Release();
}
}