aggrid

client/src/services/AuthService.js

@@ -18,13 +18,32 @@ class AuthService {
       if (!response.ok) {
         const errorData = await response.json().catch(() => ({}));
         console.log('Server error response:', errorData);
-        const errorMessage = errorData.message || errorData.error || `HTTP ${response.status}: Login failed`;
-        throw new Error(errorMessage);
+        
+        // Handle different types of errors with clearer messages
+        if (response.status === 502 || response.status === 503) {
+          throw new Error('FibDash Service nicht verfügbar - Bitte versuchen Sie es später erneut');
+        } else if (response.status === 500) {
+          throw new Error('FibDash Server Fehler - Bitte kontaktieren Sie den Administrator');
+        } else if (response.status === 403) {
+          const message = errorData.message || 'Zugriff verweigert';
+          throw new Error(message);
+        } else if (response.status === 401) {
+          throw new Error('Google-Anmeldung fehlgeschlagen - Bitte versuchen Sie es erneut');
+        } else {
+          const errorMessage = errorData.message || errorData.error || `HTTP ${response.status}: Unbekannter Fehler`;
+          throw new Error(errorMessage);
+        }
       }
 
       return await response.json();
     } catch (error) {
       console.error('Google login error:', error);
+      
+      // Handle network errors (when backend is completely unreachable)
+      if (error instanceof TypeError && error.message.includes('fetch')) {
+        throw new Error('FibDash Service nicht erreichbar - Prüfen Sie Ihre Internetverbindung oder versuchen Sie es später erneut');
+      }
+      
       throw error;
     }
   }
@@ -39,12 +58,23 @@ class AuthService {
       });
 
       if (!response.ok) {
+        // Don't clear token for service unavailability - just return null
+        if (response.status === 502 || response.status === 503) {
+          console.warn('FibDash Service temporarily unavailable during token verification');
+          return null;
+        }
         return null;
       }
 
       const data = await response.json();
       return data.user;
     } catch (error) {
+      // Handle network errors gracefully - don't clear token for temporary network issues
+      if (error instanceof TypeError && error.message.includes('fetch')) {
+        console.warn('Network error during token verification - service may be unavailable');
+        return null;
+      }
+      
       console.error('Token verification error:', error);
       return null;
     }