protected async void Add(object sender, EventArgs e)
{
const string genericErrorMessage =
"Sorry, an error occurred when adding the book to your library. Try again later.";
var title = txtTitle.Text;
var summary = txtSummary.Text;
var isbn = txtIsbn.Text;
var publishYear = txtPublishYear.Text;
var authors = txtAuthors.Text;
var publisher = txtPublisher.Text;
var pageCount = txtPageCount.Text;
if (string.IsNullOrWhiteSpace(title))
{
ToastService.Error("A title is required.");
return;
}
stkBtns.IsVisible = false;
prgAdding.IsVisible = true;
try
{
await _bookService.AddManual(title, summary, isbn, publishYear, authors, publisher, pageCount);
// notify user
ToastService.Success("Book successfully added to your library.");
// send data back
Dismiss("");
}
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(!string.IsNullOrWhiteSpace(error?.Message) ? error.Message : genericErrorMessage);
}
finally
{
stkBtns.IsVisible = true;
prgAdding.IsVisible = false;
}
}
