public async Task <Result <Model, ValidationError> > Handle(Query message)
{
var course = await _dbContext.Courses
.Include(c => c.Students)
.ThenInclude(s => s.Student)
.SingleOrDefaultAsync(x => x.Id == message.CourseId);
if (course == null)
{
return(Result.Error <Model> .Create(MissingCourse));
}
return(Result.Ok <ValidationError> .Create(new Model
{
Statistics = await _statisticsService.Get(message.CourseId),
Teacher = course.Teacher,
Students = course.Students.Select(x => x.Student).ToList()
}));
}
public IHttpActionResult Get()
{
var model = _statisticsService.Get();
return(Ok(_mapper.Map <StatisticsDTO>(model)));
}
public async Task LoadData()
{
// load remote data
const string genericErrorMessage =
"Sorry, an error occurred when retrieving your data. Try again later.";
rfsHome.IsRefreshing = true;
try
{
// get the most recent books
var bookResponse = await _bookService.GetRecent();
var books = bookResponse.ToList();
if (books.Any())
{
lstRecentBooks.ItemsSource = books;
lblNoRecentBooks.IsVisible = false;
}
else
{
lblNoRecentBooks.IsVisible = true;
}
// get the top authors
var authorResponse = await _authorService.GetTop();
var authors = authorResponse.ToList();
if (authors.Any())
{
lstTopAuthors.ItemsSource = authors;
lblNoAuthors.IsVisible = false;
}
else
{
lblNoAuthors.IsVisible = true;
}
// get the top publishers
var publisherResponse = await _publisherService.GetTop();
var publishers = publisherResponse.ToList();
if (publishers.Any())
{
lstTopPublishers.ItemsSource = publishers;
lblNoPublishers.IsVisible = false;
}
else
{
lblNoPublishers.IsVisible = true;
}
// get the stats for the books
var stats = await _statisticsService.Get();
lblBooksCount.Text = stats.Books.ToString();
lblAuthorsCount.Text = stats.Authors.ToString();
lblPublishersCount.Text = stats.Publishers.ToString();
lblWishlistCount.Text = stats.WishListItems.ToString();
}
catch (ApiException ex) when(ex.IsValidationException())
{
var error = await ex.GetContentAsAsync <ValidationErrorViewModel>();
ToastService.Error(error?.Message?.Length > 0 ? error.Message[0] : genericErrorMessage);
}
catch (ApiException ex)
{
var error = await ex.GetContentAsAsync <ErrorViewModel>();
ToastService.Error(error?.Message?.Length > 0 ? error.Message : genericErrorMessage);
}
finally
{
rfsHome.IsRefreshing = false;
}
}
public ActionResult Get()
{
List <Statistics> stats = _statsService.Get();
return(Ok(new { values = stats }));
}