Corrections of SQL Alchemy error

app/main.py

@@ -7,6 +7,7 @@ import os, json
 from datetime import datetime, timedelta
 from io import BytesIO
 from xhtml2pdf import pisa
+from sqlalchemy import text
 
 app = Flask(__name__)
 
@@ -61,17 +62,17 @@ def load_user(user_id):
 # --- Hilfsfunktionen ---
 def get_calculated_schedule(car_num):
     config = RaceConfig.query.first()
-    stints = Stint.query.filter_by(car_number=car_num).order_by(Stint.order).all()
+    if not config: return []
     
+    stints = Stint.query.filter_by(car_number=car_num).order_by(Stint.order).all()
     schedule = []
     current_time = config.start_time
-    fuel_capacity = 120.0 # Liter (Beispielhaft fixiert)
+    fuel_capacity = 120.0
     
     for i, stint in enumerate(stints):
         driver = stint.driver
         if not driver: continue
         
-        # Vereinfachte Berechnung: Ein Stint ist voll, wenn der Tank leer ist
         laps_possible = int(fuel_capacity / driver.cons_per_lap)
         duration_sec = laps_possible * driver.avg_lap_time
         
@@ -172,11 +173,21 @@ def logout():
 if __name__ == '__main__':
     with app.app_context():
         db.create_all()
-        # Initialer User falls nicht vorhanden
+        
+        # Manueller Fix: Spalte 'theme' hinzufügen, falls sie fehlt (SQLite-spezifisch)
+        try:
+            db.session.execute(text("ALTER TABLE user ADD COLUMN theme VARCHAR(20) DEFAULT 'light'"))
+            db.session.commit()
+        except Exception:
+            # Fehler tritt auf, wenn Spalte bereits existiert – das ist ok
+            db.session.rollback()
+
         if not User.query.filter_by(username='mscaltenbach').first():
             pw = generate_password_hash('admin123')
             db.session.add(User(username='mscaltenbach', password=pw, theme='light'))
+        
         if not RaceConfig.query.first():
             db.session.add(RaceConfig())
+        
         db.session.commit()
     app.run(host='0.0.0.0', port=5000, debug=True)