private async void LoadMovieGroups()
{
IsBusy = true;
MovieGroups.Clear();
HasThrownError = false;
ErrorMessage = string.Empty;
try
{
await _servicesManager.GetMovieGroupsAsync(onEachMovieGroupCallback : movieGroup =>
{
if (movieGroup != null && movieGroup.Movies != null && movieGroup.Movies.Any())
{
var movieGroupWrapper = new MovieGroupWrapper(movieGroup, onMovieSelectedCallback: selectedMovie =>
{
ShowViewModel <MovieDetailViewModel>(selectedMovie);
});
MovieGroups.Add(movieGroupWrapper);
IsBusy = false;
}
});
}
catch (Exception)
{
HasThrownError = true;
ErrorMessage = "An error has occurred while loading some of the movies"; // TODO: Use a Resx file
IsBusy = false;
}
}
public GroupedMoviesViewModel(
IMessenger messenger,
IMovieRepository movieRepository)
{
MovieRepository = movieRepository;
if (MovieRepository != null)
{
MovieGroups = MovieRepository.LoadMovies()
.GroupBy(m => m.Genre)
.Select(g => new MovieGroupViewModel(messenger)
{
Title = g.Key.ToString(),
Movies = g.ToList(),
GroupImageUrl = g.First().ImageUrl
});
}
MovieTappedCommand = new RelayCommand <Movie>((movie) =>
{
var movieGroup = MovieGroups.First(mg => mg.Movies.Contains(movie));
messenger.Send <MovieSelectedMessage>(new MovieSelectedMessage {
Movie = movie, MovieGroup = movieGroup
});
});
MovieSelectedCommand = new RelayCommand(() =>
{
var movieGroup = MovieGroups.First(mg => mg.Movies.Contains(SelectedMovie));
messenger.Send <MovieSelectedMessage>(new MovieSelectedMessage {
Movie = SelectedMovie, MovieGroup = movieGroup
});
});
}
