fix proof of work issue

lib/src/localization/app_de.arb

@@ -20,6 +20,7 @@
     "registerUsernameSlogan": "Bitte wähle einen Benutzernamen, damit dich andere finden können!",
     "registerUsernameDecoration": "Benutzername",
     "registerUsernameLimits": "Der Benutzername muss mindestens 3 Zeichen lang sein.",
+    "registerProofOfWorkFailed": "Beim Captcha-Test gab es ein Problem. Bitte versuche es erneut.",
     "registerSubmitButton": "Jetzt registrieren!",
     "registerTwonlyCodeText": "Hast du einen twonly-Code erhalten? Dann löse ihn entweder direkt hier oder später ein!",
     "registerTwonlyCodeLabel": "twonly-Code",

lib/src/localization/app_en.arb

@@ -20,6 +20,7 @@
   "registerUsernameSlogan": "Please select a username so others can find you!",
   "registerUsernameDecoration": "Username",
   "registerUsernameLimits": "Your username must be at least 3 characters long.",
+  "registerProofOfWorkFailed": "There was an issue with the captcha test. Please try again.",
   "registerSubmitButton": "Register now!",
   "registerTwonlyCodeText": "Have you received a twonly code? Then redeem it either directly here or later!",
   "registerTwonlyCodeLabel": "twonly-Code",

lib/src/localization/generated/app_localizations.dart

@@ -218,6 +218,12 @@ abstract class AppLocalizations {
   /// **'Your username must be at least 3 characters long.'**
   String get registerUsernameLimits;
 
+  /// No description provided for @registerProofOfWorkFailed.
+  ///
+  /// In en, this message translates to:
+  /// **'There was an issue with the captcha test. Please try again.'**
+  String get registerProofOfWorkFailed;
+
   /// No description provided for @registerSubmitButton.
   ///
   /// In en, this message translates to:

lib/src/localization/generated/app_localizations_de.dart

@@ -79,6 +79,10 @@ class AppLocalizationsDe extends AppLocalizations {
   String get registerUsernameLimits =>
       'Der Benutzername muss mindestens 3 Zeichen lang sein.';
 
+  @override
+  String get registerProofOfWorkFailed =>
+      'Beim Captcha-Test gab es ein Problem. Bitte versuche es erneut.';
+
   @override
   String get registerSubmitButton => 'Jetzt registrieren!';
 

lib/src/localization/generated/app_localizations_en.dart

@@ -78,6 +78,10 @@ class AppLocalizationsEn extends AppLocalizations {
   String get registerUsernameLimits =>
       'Your username must be at least 3 characters long.';
 
+  @override
+  String get registerProofOfWorkFailed =>
+      'There was an issue with the captcha test. Please try again.';
+
   @override
   String get registerSubmitButton => 'Register now!';
 

lib/src/views/chats/add_new_user.view.dart

@@ -169,7 +169,7 @@ class _SearchUsernameView extends State<AddNewUserView> {
                   },
                   inputFormatters: [
                     LengthLimitingTextInputFormatter(12),
-                    FilteringTextInputFormatter.allow(RegExp('[a-z0-9A-Z]')),
+                    FilteringTextInputFormatter.allow(RegExp('[a-z0-9A-Z._]')),
                   ],
                   controller: searchUserName,
                   decoration:

lib/src/views/onboarding/register.view.dart

@@ -40,6 +40,7 @@ class _RegisterViewState extends State<RegisterView> {
   bool _isTryingToRegister = false;
   bool _isValidUserName = false;
   bool _showUserNameError = false;
+  bool _showProofOfWorkError = false;
 
   late Future<int>? proofOfWork;
 
@@ -63,6 +64,7 @@ class _RegisterViewState extends State<RegisterView> {
     setState(() {
       _isTryingToRegister = true;
       _showUserNameError = false;
+      _showProofOfWorkError = false;
     });
 
     late int proof;
@@ -93,6 +95,7 @@ class _RegisterViewState extends State<RegisterView> {
       Log.info('Got user_id ${res.value} from server');
       userId = res.value.userid.toInt() as int;
     } else {
+      proofOfWork = null;
       if (res.error == ErrorCode.RegistrationDisabled) {
         _registrationDisabled = true;
         return;
@@ -103,9 +106,12 @@ class _RegisterViewState extends State<RegisterView> {
         return createNewUser();
       }
       if (res.error == ErrorCode.InvalidProofOfWork) {
-        Log.error('Proof of Work is invalid. Try again.');
         await deleteLocalUserData();
-        return createNewUser();
+        setState(() {
+          _showProofOfWorkError = true;
+          _isTryingToRegister = false;
+        });
+        return;
       }
       if (mounted) {
         setState(() {
@@ -232,7 +238,7 @@ class _RegisterViewState extends State<RegisterView> {
                 },
                 inputFormatters: [
                   LengthLimitingTextInputFormatter(12),
-                  FilteringTextInputFormatter.allow(RegExp('[a-z0-9A-Z]')),
+                  FilteringTextInputFormatter.allow(RegExp('[a-z0-9A-Z._]')),
                 ],
                 style: const TextStyle(fontSize: 17),
                 decoration: getInputDecoration(
@@ -248,7 +254,17 @@ class _RegisterViewState extends State<RegisterView> {
                 ),
                 textAlign: TextAlign.center,
               ),
-              const SizedBox(height: 30),
+              const SizedBox(height: 10),
+              Text(
+                context.lang.registerProofOfWorkFailed,
+                style: TextStyle(
+                  color:
+                      _showProofOfWorkError ? Colors.red : Colors.transparent,
+                  fontSize: 12,
+                ),
+                textAlign: TextAlign.center,
+              ),
+              const SizedBox(height: 10),
               Column(
                 children: [
                   FilledButton.icon(

lib/src/views/settings/profile/profile.view.dart

@@ -146,7 +146,7 @@ class _ProfileViewState extends State<ProfileView> {
                 maxLength: 12,
                 inputFormatters: [
                   LengthLimitingTextInputFormatter(12),
-                  FilteringTextInputFormatter.allow(RegExp('[a-z0-9A-Z]')),
+                  FilteringTextInputFormatter.allow(RegExp('[a-z0-9A-Z._]')),
                 ],
               );
               if (context.mounted && username != null && username != '') {