private async Task FetchConfigurationAsync(CancellationToken cancellationToken)
{
try
{
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs(0, "Connecting to demo system..."));
// Check admin credentials (not actually required)
var valid = await _client.CheckCredentialsAsync(_systemProperties.AdminUser, _systemProperties.AdminPassword);
await Task.Delay(500, cancellationToken); // Delay a bit for show
cancellationToken.ThrowIfCancellationRequested();
if (!valid)
{
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs("Invalid credentials."));
return;
}
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs(0.25, "Retrieving door controllers..."));
var doorControllers = await _client.GetDoorControllersAsync();
await Task.Delay(500, cancellationToken); // Delay a bit for demonstration
cancellationToken.ThrowIfCancellationRequested();
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs(0.5, "Retrieving doors..."));
var doors = await _client.GetDoorsAsync();
await Task.Delay(500, cancellationToken); // Delay a bit for demonstration
cancellationToken.ThrowIfCancellationRequested();
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs(0.75, "Retrieving event types..."));
var eventTypes = await _client.GetEventTypesAsync();
await Task.Delay(500, cancellationToken); // Delay a bit for demonstration
cancellationToken.ThrowIfCancellationRequested();
var configuration = BuildConfiguration(doorControllers, doors, eventTypes);
if (configuration != null)
{
// Done
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs(configuration));
}
else
{
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs("Invalid configuration."));
}
}
catch (DemoApplicationClientException ex)
{
ACUtil.Log(true, "DemoACPlugin.ConfigurationManager", "Error fetching configuration: " + ex.Message);
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs("Error communicating with the Demo Application."));
}
catch (OperationCanceledException)
{
FireFetchConfigurationStatusChanged(new ACFetchConfigurationStatusChangedEventArgs("Fetching configuration canceled."));
}
}