private async void Reader_CardAdded(SmartCardReader sender, CardAddedEventArgs args)
{
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): CardAdded event fired.");
try
{
TravelCard card = await CardOperations.ReadTravelCardAsync(args.SmartCard);
if (card != null)
{
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Successful read card.");
Task updateCardTask = SharedState.SetAsync(SharedState.LastSeenCard, card.RawValues);
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): LastSeenCard updated.");
Task updateTimestampTask = SharedState.SetAsync(SharedState.LastSeenTimestamp, DateTimeOffset.UtcNow);
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): LastSeenTimestamp updated.");
if (await SharedState.GetAsync <bool>(SharedState.IsApplicationInForeground))
{
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Application is in the foreground. Changed Progress value.");
_taskInstance.Progress = 2;
}
else
{
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Application is in the background. Post toast notification.");
PostToastNotification(card);
}
}
}
catch (Exception ex)
{
await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Failed to read travel card! Exception: {ex}\nStack trace: {ex.StackTrace}");
}
}