feat: add error_handler and email verification request

lib/l10n/app_de.arb

@@ -383,5 +383,13 @@
   "lobbyStatusEntering": "Betrete das Schlachtfeld...",
   
   "connectivityError": "Keine Internetverbindung verfügbar.",
-  "connectivityMultiplayerError": "Für Multiplayer wird eine Internetverbindung benötigt." 
+  "connectivityMultiplayerError": "Für Multiplayer wird eine Internetverbindung benötigt.",
+
+  "errorNoInternet": "Keine Internetverbindung", 
+  "errorGeneric": "Etwas ist schiefgelaufen.",
+  "errorUnauthorized": "Zugriff verweigert. Bitte neu einloggen.",
+  "errorNotFound": "Daten konnten nicht gefunden werden.",
+  "errorEntryNotUnique": "Dieser Eintrag ist bereits vergeben.",
+  "errorAuthenticationFailed": "E-Mail oder Passwort falsch.",
+  "errorIllegalRequest": "Ungültige Anfrage."
 }

lib/l10n/app_en.arb

@@ -397,5 +397,13 @@
   "lobbyStatusEntering": "Entering Battle...",
   
   "connectivityError": "No internet connection available.",
-  "connectivityMultiplayerError": "Active internet connection required for multiplayer."
+  "connectivityMultiplayerError": "Active internet connection required for multiplayer.",
+  
+  "errorNoInternet": "No internet connection", 
+  "errorGeneric": "Something went wrong",
+  "errorUnauthorized": "Access denied. Please relogin.",
+  "errorNotFound": "Data not found.",
+  "errorEntryNotUnique": "Entry already exists.",
+  "errorAuthenticationFailed": "E-Mail or Passwort wrong.",
+  "errorIllegalRequest": "Illegal Request."
 }

lib/src/core/utils/error_handler.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:slrpg_app/l10n/app_localizations.dart';
+import 'package:slrpg_app/src/core/theme/app_theme.dart';
+
+class ErrorHandler {
+  static String getReadableError(BuildContext context, Object error) {
+    final l10n = AppLocalizations.of(context);
+    if (l10n == null) return error.toString();
+
+    final e = error.toString();
+
+    if (e.contains('SocketException') ||
+        e.contains('Connection refused') ||
+        e.contains('ClientException') ||
+        e.contains('HandshakeException')) {
+      return l10n.errorNoInternet;
+    }
+
+    if (e.contains('401') || e.contains('403')) {
+      return l10n.errorUnauthorized;
+    }
+
+    if (e.contains('404')) {
+      return l10n.errorNotFound;
+    }
+
+    if (e.contains('400')) {
+      if (e.contains('validation_not_unique')) {
+        return l10n.errorEntryNotUnique;
+      }
+      if (e.contains('Failed to authenticate')) {
+        return l10n.errorAuthenticationFailed;
+      }
+      return l10n.errorIllegalRequest;
+    }
+
+    return l10n.errorGeneric;
+  }
+
+  static void showErrorSnackBar(BuildContext context, Object error) {
+    ScaffoldMessenger.of(context).hideCurrentSnackBar();
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(getReadableError(context, error)),
+        backgroundColor: AppTheme.errorColor,
+        behavior: SnackBarBehavior.floating,
+        duration: const Duration(seconds: 4),
+        action: SnackBarAction(
+          label: 'OK',
+          textColor: Colors.white,
+          onPressed: () => ScaffoldMessenger.of(context).hideCurrentSnackBar(),
+        ),
+      ),
+    );
+  }
+}

lib/src/features/authentication/presentation/screens/login_screen.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:slrpg_app/l10n/app_localizations.dart';
+import 'package:slrpg_app/src/core/utils/error_handler.dart';
 
 import '../../../../shared/data/repositories/user_repository.dart';
 import '../../../../core/theme/app_theme.dart';
@@ -60,6 +61,7 @@ class _LoginScreenState extends ConsumerState<LoginScreen> {
           _isLoading = false;
           _errorMessage = _parseErrorMessage(e.toString());
         });
+        ErrorHandler.showErrorSnackBar(context, e);
       }
     }
   }

lib/src/features/dashboard/presentation/screens/hub_screen.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import 'package:slrpg_app/l10n/app_localizations.dart';
+import 'package:slrpg_app/src/core/utils/error_handler.dart';
 import 'package:slrpg_app/src/features/multiplayer/data/repositories/party_repository.dart';
 
 import '../../../../core/constants/app_constants.dart';
@@ -159,9 +160,7 @@ class _HubScreenState extends ConsumerState<HubScreen> {
     } catch (e) {
       log('Failed to start workout: $e');
       if (mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(
+        if (mounted) ErrorHandler.showErrorSnackBar(context, e);
-          SnackBar(content: Text('Error: $e')),
-        );
       }
     }
   }
@@ -276,8 +275,7 @@ class _HubScreenState extends ConsumerState<HubScreen> {
                 if (mounted) context.go('/lobby/${party.id}');
               } catch (e) {
                 if (mounted) {
-                  ScaffoldMessenger.of(context)
+                  if (mounted) ErrorHandler.showErrorSnackBar(context, e);
-                      .showSnackBar(SnackBar(content: Text('Error: $e')));
                 }
               }
             },
@@ -321,8 +319,7 @@ class _HubScreenState extends ConsumerState<HubScreen> {
                   if (mounted) context.go('/lobby/${party.id}');
                 } catch (e) {
                   if (mounted) {
-                    ScaffoldMessenger.of(context)
+                    if (mounted) ErrorHandler.showErrorSnackBar(context, e);
-                        .showSnackBar(SnackBar(content: Text('Error: $e')));
                   }
                 }
               }
@@ -497,21 +494,21 @@ class _HubScreenState extends ConsumerState<HubScreen> {
                         ),
                       ),
                     const SizedBox(height: 24),
-                    if (cycle != null)
+                    // if (cycle != null)
-                      Padding(
+                    //   Padding(
-                        padding: const EdgeInsets.symmetric(horizontal: 32),
+                    //     padding: const EdgeInsets.symmetric(horizontal: 32),
-                        child: Row(
+                    //     child: Row(
-                          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+                    //       mainAxisAlignment: MainAxisAlignment.spaceEvenly,
-                          children: [
+                    //       children: [
-                            _StatBox(
+                    //         _StatBox(
-                                label: l10n.hubCycleLabel,
+                    //             label: l10n.hubCycleLabel,
-                                value: '#${cycle.cycleNumber}'),
+                    //             value: '#${cycle.cycleNumber}'),
-                            _StatBox(
+                    //         _StatBox(
-                                label: l10n.hubActiveLabel,
+                    //             label: l10n.hubActiveLabel,
-                                value: l10n.hubActiveYes),
+                    //             value: l10n.hubActiveYes),
-                          ],
+                    //       ],
-                        ),
+                    //     ),
-                      ),
+                    //   ),
                     const Spacer(flex: 1),
                     Container(
                       padding: const EdgeInsets.symmetric(

lib/src/features/onboarding/presentation/screens/avatar_setup_screen.dart

@@ -62,6 +62,7 @@ class _AvatarSetupScreenState extends ConsumerState<AvatarSetupScreen> {
         );
         await Future.delayed(const Duration(milliseconds: 100));
         user = await userRepo.getLocalUser();
+        await ref.read(apiClientProvider).requestVerification(email);
 
         if (user == null) {
           throw Exception(

lib/src/features/workout_runner/presentation/screens/battle_screen.dart

@@ -169,11 +169,10 @@ class _BattleScreenState extends ConsumerState<BattleScreen> {
 
     if (!mounted) return;
 
+    _showCompletionDialog(result.xpEarned);
     if (result.hasLevelUp) {
       _showLevelUpDialog(result.oldLevel!, result.newLevel!);
     }
-
-    _showCompletionDialog(result.xpEarned);
   }
 
   void _showLevelUpDialog(int oldLevel, int newLevel) {

lib/src/shared/data/remote/api_client.dart

@@ -236,6 +236,19 @@ class ApiClient {
     }
   }
 
+  Future<void> requestVerification(String email) async {
+    try {
+      await _dio.post(
+        '/api/collections/users/request-verification',
+        data: {'email': email},
+      );
+      _logger.i('Verification email requested for $email');
+    } catch (e) {
+      _logger.e('Request verification failed', error: e);
+      rethrow;
+    }
+  }
+
   Future<void> logout() async {
     await _storage.delete(key: AppConstants.keyAuthToken);
     await _storage.delete(key: AppConstants.keyUserId);