private async Task LoadProjectsAsync()
{
if (_isLoading)
{
return;
}
try
{
_isLoading = true;
_projectsDataSource.Clear();
_projectsAdapter.NotifyDataSetChanged();
_progressBar.Visibility = ViewStates.Visible;
var authContext = new AuthenticationContext(Constants.HyprsoftAzureActiveDirectoryUrl);
var clientCredentials = new ClientCredential(Constants.MobileServiceClientId, Constants.MobileServiceClientSecret);
var authResult = await authContext.AcquireTokenAsync(Constants.MobileServiceUrl, clientCredentials);
_mobileServiceClient?.Dispose();
_mobileServiceClient = new MobileServiceClient(Constants.MobileServiceUrl);
await _mobileServiceClient.LoginAsync(MobileServiceAuthenticationProvider.WindowsAzureActiveDirectory, new JObject(new JProperty("access_token", authResult.AccessToken)));
var table = _mobileServiceClient.GetTable <Project>();
_projectsDataSource.AddRange(await table.OrderBy(p => p.CreatedAt).ToListAsync());
var hubConnection = new HubConnection(Constants.MobileServiceUrl);
hubConnection.Headers.Add("X-ZUMO-AUTH", _mobileServiceClient.CurrentUser.MobileServiceAuthenticationToken);
_hubProxy = hubConnection.CreateHubProxy("ProjectsHub");
_hubProxy.On <Project>("projectAdded", (project) => RunOnUiThread(() =>
{
_projectsDataSource.Add(project);
_projectsAdapter.NotifyDataSetChanged();
}));
_hubProxy.On <string>("projectRemoved", (id) => RunOnUiThread(() =>
{
var project = _projectsDataSource.SingleOrDefault(p => p.Id == id);
if (project != null)
{
_projectsDataSource.Remove(project);
_projectsAdapter.NotifyDataSetChanged();
}
}));
await hubConnection.Start();
_projectsAdapter.NotifyDataSetChanged();
}
catch (Exception ex)
{
Toast.MakeText(this, $"An unexpected error occurred: {ex.Message}", ToastLength.Long).Show();
}
finally
{
_progressBar.Visibility = ViewStates.Gone;
_isLoading = false;
}
}
