public async Task <SyncResult> SyncAuthProviders()
{
// Current set of providers in the database so we can check if any have been removed.
List <String> currentList = (await DataAccessLayer.Current.GetAuthProvidersAsync()).Select(a => a.Name).ToList();
SyncResult result = SyncResult.Failed;
HttpResponseMessage response;
try
{
response = await WebAPI.GetAuthProviders();
if (response.IsSuccessStatusCode)
{
var providers = await response.Content.ReadAsAsync <IEnumerable <AuthProvider> >();
foreach (AuthProvider ap in providers)
{
// Add provider to the database and remove from the current list
await DataAccessLayer.Current.UpdateOrAddAuthProviderAsync(ap);
currentList.Remove(ap.Name);
}
// If there are any providers remaining in currentList, then they've been removed
// from the backend and we need to delete those records from our database.
foreach (String s in currentList)
{
await DataAccessLayer.Current.DeleteAuthProviderAsync(s);
}
await Configuration.PopulateAuthProvidersFromDB();
result = SyncResult.Success;
}
}
catch (Exception ex)
{
Debug.WriteLine("SyncAuthProviders failed: " + ex.Message);
}
return(result);
}