Session zu Aktive Nutzung im Dashboard

v2_adminpanel/routes/admin_routes.py

@@ -32,10 +32,38 @@ def dashboard():
                 cur.execute("SELECT COUNT(*) FROM customers")
                 total_customers = cur.fetchone()[0] if cur.rowcount > 0 else 0
                 
-                # Anzahl aktiver Sessions
+                # Anzahl aktiver Sessions (Admin-Panel)
                 cur.execute("SELECT COUNT(*) FROM sessions WHERE is_active = true")
                 active_sessions = cur.fetchone()[0] if cur.rowcount > 0 else 0
                 
+                # Aktive Nutzung (Kunden-Software) - Lizenzen mit Heartbeats in den letzten 15 Minuten
+                active_usage = 0
+                try:
+                    # Prüfe ob Tabelle existiert
+                    cur.execute("""
+                        SELECT EXISTS (
+                            SELECT FROM information_schema.tables 
+                            WHERE table_name = 'license_heartbeats'
+                        )
+                    """)
+                    table_exists = cur.fetchone()[0]
+                    
+                    if table_exists:
+                        cur.execute("""
+                            SELECT COUNT(DISTINCT license_id) 
+                            FROM license_heartbeats 
+                            WHERE timestamp > NOW() - INTERVAL '15 minutes'
+                        """)
+                        active_usage = cur.fetchone()[0] if cur.rowcount > 0 else 0
+                except Exception as e:
+                    # Bei Fehler einfach 0 verwenden
+                    current_app.logger.warning(f"Could not get active usage: {str(e)}")
+                    # Rollback der fehlgeschlagenen Transaktion
+                    conn.rollback()
+                    # Neue Transaktion starten
+                    conn = get_connection()
+                    cur = conn.cursor()
+                
                 # Top 10 Lizenzen - vereinfacht
                 cur.execute("""
                     SELECT 
@@ -69,7 +97,8 @@ def dashboard():
                 stats = {
                     'total_customers': total_customers,
                     'total_licenses': active_licenses,
-                    'active_sessions': active_sessions,
+                    'active_sessions': active_sessions,  # Admin-Panel Sessions
+                    'active_usage': active_usage,  # Aktive Kunden-Nutzung
                     'active_licenses': active_licenses,
                     'full_licenses': 0,
                     'test_licenses': 0,