Scheduler: Refactor database utilities and

scheduler logic

scheduler/db_utils.py

@@ -0,0 +1,25 @@
+# scheduler/db_utils.py
+from models import Event
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from datetime import datetime
+import os
+import sys
+sys.path.append('/workspace/server')
+
+# DB-URL aus Umgebungsvariable oder Fallback
+DB_CONN = os.environ.get("DB_CONN", "mysql+pymysql://user:password@db/dbname")
+engine = create_engine(DB_CONN)
+Session = sessionmaker(bind=engine)
+
+
+def get_active_events(start: datetime, end: datetime, group_id: int = None):
+    session = Session()
+    query = session.query(Event).filter(Event.is_active == True)
+    if start and end:
+        query = query.filter(Event.start < end, Event.end > start)
+    if group_id:
+        query = query.filter(Event.group_id == group_id)
+    events = query.all()
+    session.close()
+    return events