Update app.py

app.py

@@ -650,22 +650,33 @@ Available: {match.get('Available', 'N/A')}"""
 # Gradio will run this interface
 # The `chatbot` element will manage the chat history state automatically
 with gr.Blocks() as demo:
+    # Display the model ID in the title for clarity
     gr.Markdown(f"# Business Q&A Assistant with {model_id}")
     gr.Markdown("Ask questions about the business (details from Google Sheet) or general knowledge (via search).")
 
+    # The Chatbot component to display the conversation history
     chatbot = gr.Chatbot(height=400) # height in pixels
+
+    # The Textbox component for user input
     msg = gr.Textbox(label="Your Question")
-    clear = gr.ClearButton([msg, chatbot])
 
-    # The submit event triggers the respond function
-    # The state is automatically passed to the last parameter of `respond`
-    msg.submit(respond, inputs=[msg, chatbot], outputs=[msg, chatbot])
+    # The Clear button to clear the input and chatbot history
+    clear = gr.ClearButton([msg, chatbot])
 
+    # The submit event: when the user presses Enter in the textbox or clicks the send button
+    # - fn: The Python function to call (our respond function)
+    # - inputs: A list of Gradio components whose values should be passed as arguments to the fn.
+    #           [msg] passes the user's input from the textbox.
+    #           [chatbot] passes the current state of the chatbot history.
+    # - outputs: A list of Gradio components that should be updated with the values returned by the fn.
+    #            [msg] is updated with the first return value (intended to clear the textbox with "").
+    #            [chatbot] is updated with the second return value (the updated chat history).
+    msg.submit(fn=respond, inputs=[msg, chatbot], outputs=[msg, chatbot])
 
 # Launch the Gradio app
-# share=True creates a public link (useful for testing, disable for private apps)
-# enable_queue=True can help handle multiple users if needed
+# share=True creates a public link (useful for testing, disable for private apps) - Use with caution.
+# enable_queue=True can help handle multiple users by queuing requests.
 if __name__ == "__main__":
     print("Launching Gradio app...")
-    # Use server_name="0.0.0.0" and server_port=7860 for Hugging Face Spaces default
+    # Use server_name="0.0.0.0" and server_port=7860 for Hugging Face Spaces default deployment
     demo.launch(server_name="0.0.0.0", server_port=7860)