Update app/services/assistant_service.py

app/services/assistant_service.py

@@ -0,0 +1,21 @@
+from app.models.assistant import Assistant
+
+assistant_instance = None
+
+
+def initialize_assistant():
+
+    global assistant_instance
+
+    if assistant_instance is None:
+        assistant_instance = Assistant()
+
+
+def cleanup_assistant():
+
+    global assistant_instance
+
+    if assistant_instance is not None:
+        assistant_instance.cleanup()
+
+    assistant_instance = None