📝 "🐛 Refactor backend files, improve documentation, and update UI components (#123)"

backend/app.py

@@ -5439,13 +5439,48 @@ def api_admin_database_status():
                     table_stats[table] = f"Error: {str(e)}"
             
             # Connection-Pool-Status
-            pool_status = {
-                'pool_size': engine.pool.size(),
-                'checked_in': engine.pool.checkedin(),
-                'checked_out': engine.pool.checkedout(),
-                'overflow': engine.pool.overflow(),
-                'invalid': engine.pool.invalid()
-            }
+            pool_status = {}
+            try:
+                # StaticPool hat andere Methoden als andere Pool-Typen
+                if hasattr(engine.pool, 'size'):
+                    pool_status['pool_size'] = engine.pool.size()
+                else:
+                    pool_status['pool_size'] = 'N/A (StaticPool)'
+                
+                if hasattr(engine.pool, 'checkedin'):
+                    pool_status['checked_in'] = engine.pool.checkedin()
+                else:
+                    pool_status['checked_in'] = 'N/A'
+                
+                if hasattr(engine.pool, 'checkedout'):
+                    pool_status['checked_out'] = engine.pool.checkedout()
+                else:
+                    pool_status['checked_out'] = 'N/A'
+                
+                if hasattr(engine.pool, 'overflow'):
+                    pool_status['overflow'] = engine.pool.overflow()
+                else:
+                    pool_status['overflow'] = 'N/A'
+                
+                if hasattr(engine.pool, 'invalid'):
+                    pool_status['invalid'] = engine.pool.invalid()
+                else:
+                    pool_status['invalid'] = 'N/A'
+                    
+                # Zusätzliche StaticPool-spezifische Informationen
+                pool_status['pool_type'] = type(engine.pool).__name__
+                
+            except Exception as pool_error:
+                app_logger.warning(f"Fehler beim Abrufen des Pool-Status: {str(pool_error)}")
+                pool_status = {
+                    'pool_size': 'Error',
+                    'checked_in': 'Error',
+                    'checked_out': 'Error',
+                    'overflow': 'Error',
+                    'invalid': 'Error',
+                    'pool_type': type(engine.pool).__name__,
+                    'error': str(pool_error)
+                }
         
         db_session.close()
         
@@ -5567,10 +5602,20 @@ def api_admin_system_status():
         try:
             boot_time = psutil.boot_time()
             uptime_seconds = int(time.time() - boot_time)
+            
+            # Robuste uptime-Formatierung
+            try:
+                days = uptime_seconds // 86400
+                hours = (uptime_seconds % 86400) // 3600
+                minutes = ((uptime_seconds % 86400) % 3600) // 60
+                uptime_formatted = f"{days}d {hours}h {minutes}m"
+            except (ValueError, OverflowError, ZeroDivisionError):
+                uptime_formatted = f"{uptime_seconds}s"
+            
             uptime_info = {
                 'boot_time': datetime.fromtimestamp(boot_time).isoformat(),
                 'uptime_seconds': uptime_seconds,
-                'uptime_formatted': str(timedelta(seconds=uptime_seconds))
+                'uptime_formatted': uptime_formatted
             }
         except Exception:
             uptime_info = {'error': 'Uptime-Informationen nicht verfügbar'}