1286: Improve qr code error handling

frontend/assets/l10n/app_de.json

@@ -98,8 +98,8 @@
     "codeExpired": "Der eingescannte Code ist bereits am {{expirationDate}} abgelaufen.",
     "codeInvalid": "Der Inhalt des eingescannten Codes kann nicht verstanden werden. Vermutlich handelt es sich um einen QR-Code, der nicht für diese App generiert wurde.",
     "codeInvalidMissing": "Der Inhalt des eingescannten Codes ist unvollständig. (Fehlercode: {{missing}}Missing)",
-    "codeSavingFailed": "Der eingescannte Code kann nicht in der App gespeichert werden.",
-    "codeUnknownError": "Beim Scannen des QR-Codes ist ein unbekannter Fehler aufgetreten.",
+    "codeInvalidType": "Der eingescannte Code ist für diesen Vorgang nicht gültig. (Eingescannt: {{qrCodeType}})",
+    "codeUnknownType": "Der eingescannte Code ist für diese Anwendung nicht gültig.",
     "codeVerificationFailed": "Der eingescannte Code konnte vom Server nicht verifiziert werden.",
     "codeActivationFailedConnection": "Der eingescannte Code konnte nicht aktiviert werden. Bitte stellen Sie sicher, dass eine Internetverbindung besteht und prüfen Sie erneut.",
     "codeVerificationFailedConnection": "Der eingescannte Code konnte nicht verifiziert werden. Bitte stellen Sie sicher, dass eine Internetverbindung besteht und prüfen Sie erneut.",

frontend/assets/l10n/app_en.json

@@ -98,8 +98,8 @@
     "codeExpired": "The scanned code has already expired on {{expirationDate}}.",
     "codeInvalid": "The content of the scanned code cannot be understood. It is probably a QR code that was not generated for this app.",
     "codeInvalidMissing": "The content of the scanned code is incomplete. (Error code: {{missing}}Missing)",
-    "codeSavingFailed": "The scanned code cannot be saved in the app.",
-    "codeUnknownError": "An unknown error occurred while scanning the QR code.",
+    "codeInvalidType": "The scanned code is not valid for this operation. (Scanned: {{qrCodeType}})",
+    "codeUnknownType": "The scanned code is not valid for this application.",
     "codeVerificationFailed": "The scanned code could not be verified by the server.",
     "codeActivationFailedConnection": "The scanned code could not be activated. Please make sure you have an internet connection and try again.",
     "codeVerificationFailedConnection": "The scanned code could not be verified. Please make sure you have an internet connection and try again.",

frontend/lib/identification/activation_workflow/activation_code_parser.dart

@@ -20,7 +20,7 @@ class ActivationCodeParser {
     final QrCode qrCode = rawContent.parseQRCodeContent();
 
     if (!qrCode.hasDynamicActivationCode()) {
-      throw QrCodeWrongTypeException();
+      throw QrCodeWrongTypeException(getQRCodeTypeMessage(qrCode));
     }
 
     final DynamicActivationCode activationCode = qrCode.dynamicActivationCode;
@@ -40,3 +40,16 @@ class ActivationCodeParser {
     }
   }
 }
+
+String getQRCodeTypeMessage(QrCode code) {
+  if (code.hasDynamicVerificationCode()) {
+    return 'dynamic verification code';
+  }
+  if (code.hasStaticVerificationCode()) {
+    return 'static verification code';
+  }
+  if (code.hasDynamicActivationCode()) {
+    return 'dynamic activation code';
+  }
+  return 'unknown code';
+}

frontend/lib/identification/activation_workflow/activation_code_scanner_page.dart

@@ -47,16 +47,16 @@ class ActivationCodeScannerPage extends StatelessWidget {
       await showError(t.identification.cardAlreadyActivated, null);
     } on QrCodeFieldMissingException catch (e) {
       await showError(t.identification.codeInvalidMissing(missing: e.missingFieldName), null);
-    } on QrCodeWrongTypeException catch (_) {
-      await showError(t.identification.codeSavingFailed, null);
+    } on QrCodeWrongTypeException catch (e) {
+      await showError(t.identification.codeInvalidType(qrCodeType: e.qrCodeType), null);
     } on CardExpiredException catch (e) {
       final expirationDate = DateFormat('dd.MM.yyyy').format(e.expiry);
       await showError(t.identification.codeExpired(expirationDate: expirationDate), null);
     } on ServerCardActivationException catch (_) {
       await ConnectionFailedDialog.show(context, t.identification.codeActivationFailedConnection);
     } on Exception catch (e, stacktrace) {
       debugPrintStack(stackTrace: stacktrace, label: e.toString());
-      await showError(t.identification.codeUnknownError, null);
+      await showError(t.identification.codeUnknownType, stacktrace);
     }
   }
 }

frontend/lib/identification/qr_code_scanner/qr_code_processor.dart

@@ -11,5 +11,6 @@ class QrCodeFieldMissingException extends QrCodeParseException {
 }
 
 class QrCodeWrongTypeException extends QrCodeParseException {
-  QrCodeWrongTypeException() : super('Wrong QrCode type was read.');
+  final String qrCodeType;
+  QrCodeWrongTypeException(this.qrCodeType) : super('Wrong QrCode type was read: $qrCodeType');
 }

frontend/lib/identification/verification_workflow/verification_qr_code_processor.dart

@@ -20,7 +20,7 @@ Future<CardInfo?> verifyQrCodeContent(
     final verificationCode = qrcode.staticVerificationCode;
     return verifyStaticVerificationCode(client, projectId, verificationCode);
   } else {
-    throw QrCodeWrongTypeException();
+    throw QrCodeWrongTypeException(getQRCodeTypeMessage(qrcode));
   }
 }
 

frontend/lib/identification/verification_workflow/verification_qr_scanner_page.dart

@@ -110,7 +110,7 @@ class VerificationQrScannerPage extends StatelessWidget {
     } on Exception catch (e) {
       await _onError(
         context,
-        t.identification.codeUnknownError,
+        t.identification.codeUnknownType,
         e,
       );
     }