protected override async void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
//LoggingChannel lc = new LoggingChannel("UCQU_BackgroundTask", null, new Guid("4bd2826e-54a1-4ba9-bf63-92b73ea1ac4a"));
//lc.LogMessage("Background Task Activated.");
base.OnBackgroundActivated(args);
//lc.LogMessage("Base Handler Called.");
IBackgroundTaskInstance taskInstance = args.TaskInstance;
//lc.LogMessage("Task Instance Set.");
BackgroundTaskDeferral deferral = taskInstance.GetDeferral();
//lc.LogMessage("Task Deferral Obtained.");
//lc.LogMessage("Executing Payload Method.");
switch (args.TaskInstance.Task.Name)
{
case "Hourly Tile Update Task":
case "Login Tile Update Task":
try
{
string id, pwdHash;
Login.LoadCredentials(out id, out pwdHash);
if (id == null)
{
return;
}
try
{
string token = await WebClient.LoginAsync(id, pwdHash);
DL444.UcquLibrary.Models.Schedule schedule = await WebClient.GetScheduleAsync(token);
await ScheduleNotificationUpdateTasks.UpdateTile(schedule);
}
catch (Exception) { }
}
catch (Exception e)
{
//lc.LogMessage($"Unhandled exception thrown when executing task payload.\n\n{e.Message}\n\n{e.StackTrace}");
}
break;
}
//lc.LogMessage("Completing Deferral.");
deferral.Complete();
//lc.LogMessage("Task Completed.");
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
HeaderControl.DataContext = new HeaderInfo(RuntimeData.StudentInfo, RuntimeData.UserId, RuntimeData.Score.GPA);
ContentFrame.Navigate(typeof(Home));
try
{
var channel = await Windows.Networking.PushNotifications.
PushNotificationChannelManager.CreatePushNotificationChannelForApplicationAsync();
await WebClient.PostWnsChannelAsync(RuntimeData.Token, channel.Uri);
}
catch (Exception ex)
{
await WebClient.ReportException(ex);
}
// Reselect campus and reschedule tasks.
if (RuntimeData.LaunchState)
{
RuntimeData.LaunchState = false;
if (RuntimeData.LoadSetting("campus", out _) == false)
{
CampusSelect campusSelect = new CampusSelect();
await campusSelect.ShowAsync();
RuntimeData.LoadSetting("campus", out _);
}
var tasks = BackgroundTaskRegistration.AllTasks;
foreach (var task in tasks)
{
task.Value.Unregister(true);
}
BackgroundExecutionManager.RemoveAccess();
var backgroundStatus = await BackgroundExecutionManager.RequestAccessAsync();
if (backgroundStatus == BackgroundAccessStatus.DeniedBySystemPolicy ||
backgroundStatus == BackgroundAccessStatus.DeniedByUser ||
backgroundStatus == BackgroundAccessStatus.Unspecified)
{
return;
}
var builder = new BackgroundTaskBuilder();
builder.Name = "Hourly Tile Update Task";
builder.SetTrigger(new TimeTrigger(30, false));
builder.AddCondition(new SystemCondition(SystemConditionType.InternetAvailable));
builder.IsNetworkRequested = true;
builder.Register();
builder.Name = "Login Tile Update Task";
builder.SetTrigger(new SystemTrigger(SystemTriggerType.UserPresent, false));
builder.Register();
}
await ScheduleNotificationUpdateTasks.UpdateTile(RuntimeData.Schedule);
}
private async void LogoutBtn_Click(object sender, RoutedEventArgs e)
{
(Window.Current.Content as Frame).Navigate(typeof(Login), "logout");
RuntimeData.LaunchState = true;
await ScheduleNotificationUpdateTasks.UpdateTile(null);
}
