private async void ScanQrCodeButton_Clicked(System.Object sender, System.EventArgs e)
{
try
{
var current = Connectivity.NetworkAccess;
if (current != NetworkAccess.Internet)
{
await DisplayAlert("Error", "You need an active internet connection for this app to work. Please connect to the internet.", "Ok");
return;
}
viewModel.NotProcessing = false;
ScanQrCodeButton.Text = "Scanning";
var scanner = new ZXing.Mobile.MobileBarcodeScanner();
scanner.TopText = "Scan a QR code";
scanner.FlashButtonText = "Enable flashlight";
scanner.CancelButtonText = "Cancel";
var result = await scanner.Scan();
ScanQrCodeButton.Text = "Processing";
if (result != null)
{
var parsedResult = _qrCodeResultParser.ParseResult(result.Text);
switch (parsedResult.QrCodeType)
{
case QrCodeType.RegisterPoint:
await HandleRegisterPoint(parsedResult);
break;
case QrCodeType.RegisterStageEnd:
await HandleRegisterStageEnd(parsedResult);
break;
case QrCodeType.RegisterRaceEnd:
await HandleRegisterRaceEnd(parsedResult);
break;
case QrCodeType.RegisterToRace:
await DisplayAlert("Error", "This is a race registration QR code. If you want to register to a race use the add race button in the main screen.", "Ok");
break;
default:
await DisplayAlert("Error", "Unknown QR code type.", "Ok");
break;
}
}
}
catch
{
Device.BeginInvokeOnMainThread(() =>
{
DisplayAlert("Error", "Something went wrong while scanning the QR code.", "Ok");
});
}
finally
{
viewModel.NotProcessing = true;
ScanQrCodeButton.Text = "Scan QR code";
}
}
private async void ZXingScannerView_OnScanResult(ZXing.Result result)
{
try
{
Device.BeginInvokeOnMainThread(() => QrScanner.IsScanning = false);
var qrCodeResult = _qrCodeResultParser.ParseResult(result.Text);
if (qrCodeResult.QrCodeType != QrCodeType.RegisterToRace)
{
Device.BeginInvokeOnMainThread(() =>
{
ShowPopupAndLeavePage("Error", "This is not a team registration QR code.");
});
return;
}
if (await _dataStore.GetItemAsync(qrCodeResult.RaceId) != null)
{
Device.BeginInvokeOnMainThread(() => {
ShowPopupAndLeavePage("Error", "You are already registered to this race.");
});
return;
}
var current = Connectivity.NetworkAccess;
if (current != NetworkAccess.Internet)
{
Device.BeginInvokeOnMainThread(() => {
ShowPopupAndLeavePage("Error", "You need an active internet connection for this app to work. Please connect to the internet.");
});
return;
}
var uniqueId = Guid.NewGuid();
var apiResponse = await _raceVenturaApiClient.RegisterToRace(qrCodeResult.RaceId, qrCodeResult.TeamId, uniqueId);
var race = new Race
{
RaceId = apiResponse.RaceId,
Name = apiResponse.Name,
UniqueId = apiResponse.UniqueId,
RaceActive = true
};
MessagingCenter.Send(this, "AddItem", race);
Device.BeginInvokeOnMainThread(() => Navigation.PopModalAsync());
}
catch (RaceVenturaApiException ex)
{
switch (ex.ErrorCode)
{
case ErrorCodes.MaxIdsReached:
Device.BeginInvokeOnMainThread(() =>
{
ShowPopupAndLeavePage("Error", "You cannot register more devices to this team.");
});
break;
case ErrorCodes.RaceEnded:
Device.BeginInvokeOnMainThread(() =>
{
ShowPopupAndLeavePage("Error", "The team you are trying to register to has finished the race, you cannot register to this team anymore.");
});
break;
default:
Device.BeginInvokeOnMainThread(() =>
{
ShowPopupAndLeavePage("Error", "Something went wrong please try again.");
});
break;
}
}
catch (Exception)
{
Device.BeginInvokeOnMainThread(() =>
{
ShowPopupAndLeavePage("Error", "Something went wrong please try again.");
});
}
}