sessions only saved for real users, names of sesssions are better, etc

query.py

@@ -104,6 +104,9 @@ def new_state():
         "history"   : None,
     })
 
+def session_id(state: dict, request: gr.Request) -> str:
+    return f'{state["user"]}_{request.session_hash}'
+
 store = None
 def auth(token, state, request: gr.Request):
     global store
@@ -122,7 +125,7 @@ def auth(token, state, request: gr.Request):
                 token=os.environ.get("ASTRA_DB_APPLICATION_TOKEN"),
                 api_endpoint=os.environ.get("ASTRA_DB_API_ENDPOINT"),
             )
-        user_session = f'{state["user"]}_{request.session_hash}'    
+        user_session = session_id(state, request)
         session_data = {
             'user'      : state["user"],
             'session'   : request.session_hash,
@@ -149,7 +152,7 @@ def not_authenticated(state):
 
 def add_history(state, request, type, message):
     if not state["history"]:
-        session = request.session_hash
+        session = session_id(state, request)
         state["history"] = AstraDBChatMessageHistory(
             session_id=session,
             collection_name=f'{os.environ.get("ASTRA_DB_COLLECTION")}_chat_history',