/// <summary>
/// Scans a QR Code, and depending on the actual result, takes different actions. This typically means navigating to an appropriate page.
/// </summary>
/// <param name="logService">The log service to use for logging.</param>
/// <param name="neuronService">The Neuron service for XMPP access</param>
/// <param name="navigationService">The navigation service for page navigation.</param>
/// <param name="uiDispatcher">The ui dispatcher for main thread access.</param>
/// <param name="contractOrchestratorService">The contract orchestrator service.</param>
/// <param name="thingRegistryOrchestratorService">The thing registry orchestrator service.</param>
/// <param name="commandName">The command name to display on the button when scanning.</param>
/// <param name="action">An optional callback that will be called after scan, but before page navigation.</param>
/// <returns></returns>
public static async Task ScanQrCodeAndHandleResult(
ILogService logService,
INeuronService neuronService,
INavigationService navigationService,
IUiDispatcher uiDispatcher,
IContractOrchestratorService contractOrchestratorService,
IThingRegistryOrchestratorService thingRegistryOrchestratorService,
string commandName,
Func <string, Task> action = null)
{
string decodedText = await IdApp.QrCode.ScanQrCode(navigationService, AppResources.Open);
if (string.IsNullOrWhiteSpace(decodedText))
{
return;
}
try
{
if (!Uri.TryCreate(decodedText, UriKind.Absolute, out Uri uri))
{
await uiDispatcher.DisplayAlert(AppResources.ErrorTitle, AppResources.CodeNotRecognized);
return;
}
switch (uri.Scheme.ToLower())
{
case Constants.UriSchemes.UriSchemeIotId:
string legalId = Constants.UriSchemes.GetCode(decodedText);
await contractOrchestratorService.OpenLegalIdentity(legalId, AppResources.ScannedQrCode);
break;
case Constants.UriSchemes.UriSchemeIotSc:
string contractId = Constants.UriSchemes.GetCode(decodedText);
await contractOrchestratorService.OpenContract(contractId, AppResources.ScannedQrCode);
break;
case Constants.UriSchemes.UriSchemeIotDisco:
if (neuronService.ThingRegistry.IsIoTDiscoClaimURI(decodedText))
{
await thingRegistryOrchestratorService.OpenClaimDevice(decodedText);
}
else if (neuronService.ThingRegistry.IsIoTDiscoSearchURI(decodedText))
{
await thingRegistryOrchestratorService.OpenSearchDevices(decodedText);
}
else
{
await uiDispatcher.DisplayAlert(AppResources.ErrorTitle, $"{AppResources.InvalidIoTDiscoveryCode}{Environment.NewLine}{Environment.NewLine}{decodedText}");
}
break;
case Constants.UriSchemes.UriSchemeTagSign:
string request = Constants.UriSchemes.GetCode(decodedText);
await contractOrchestratorService.TagSignature(request);
break;
default:
if (!await Launcher.TryOpenAsync(uri))
{
await uiDispatcher.DisplayAlert(AppResources.ErrorTitle, $"{AppResources.QrCodeNotUnderstood}{Environment.NewLine}{Environment.NewLine}{decodedText}");
}
break;
}
}
catch (Exception ex)
{
logService.LogException(ex);
await uiDispatcher.DisplayAlert(ex);
}
}
