/// <summary>
/// Loads current lunches.
/// </summary>
private async Task Initialize()
{
var lunches = await App.Api.GetAsync <IEnumerable <Lunch> >("Lunch");
if (null != lunches && lunches.Any())
{
await DispatchHelper.RunAsync(() =>
{
NoLunchesStringVisibility = Visibility.Collapsed;
lunches.ForEach(x => Lunches.Add(x));
});
}
}
/// <summary>
/// Adds new anonymous attendee to the related lunch object
/// </summary>
/// <returns>The lunch.</returns>
/// <param name="lunchGuid">Lunch GUID.</param>
async Task JoinLunch(object lunchGuid)
{
if (IsBusy)
{
return;
}
isBusy = true;
// Update the related lunch object
var guid = (string)lunchGuid;
var lunch = Lunches.Where(l => l.Id == guid).First();
var index = Lunches.IndexOf(lunch);
lunch.NumberOfAttendees += 1;
Lunches[index] = lunch;
// Trigger sync
// .. not yet implemented
isBusy = false;
}
/// <summary>
/// Retrieves all available lunches from the datasource
/// </summary>
/// <returns>Retrieves all available lunches</returns>
async Task GetLunches()
{
if (IsBusy)
{
return;
}
Exception error = null;
try
{
IsBusy = true;
Lunches.Clear();
#pragma warning disable RECS0110
var lunches = useServerDatasource ? await DependencyService.Get <AzureService>().GetLunches() : MockHelper.MockLunches();
#pragma warning restore RECS0110
foreach (var lunch in MockHelper.MockLunches())
{
Lunches.Add(lunch);
}
}
catch (Exception e)
{
error = e;
}
finally
{
isBusy = false;
}
if (error != null)
{
await Application.Current.MainPage.DisplayAlert("Error!", error.Message, "OK");
}
}
