Log user input prompt as session state variable

app.py

@@ -180,15 +180,17 @@ def bot(message, history, session_data) -> list[Any]:
     # create text response
     # TODO: see how state can be set in chat interface
     config = {"configurable": {"thread_id": "abc123"}, "callbacks": [langfuse_handler]}
+
+    user_input_prompt = message.get("text")
     response = graph.invoke(
-        {"messages": [{"role": "user", "content": message.get("text")}]},
+        {"messages": [{"role": "user", "content": user_input_prompt}]},
         config=config,
         )
     
     logger.info("Generated a response", response=response)
 
-    # Example: append dict to session state
-    session_data.append("test")
+    # Log user input prompt to session state
+    session_data = user_input_prompt
 
     return [response["messages"][-1].content], session_data