Update app.py

app.py

@@ -62,33 +62,31 @@ rag_chain = (
     | StrOutputParser()
 )
 
-def rag_chain_response(messages):
-    if not messages:  # If messages list is empty
-        return [("System", "Hi! How can I assist you today?")]  # Provide a default greeting
-    
-    # Extract the last user message
-    user_message = messages[-1][0]
-    
+# Function to handle chatbot interaction
+def rag_chain_response(messages, user_message):
     # Generate a response using the RAG chain
     response = rag_chain.invoke(user_message)
     
-    # Append response to the chat
+    # Append the user's message and the response to the chat
     messages.append((user_message, response))
-    return messages
+    
+    # Return the updated chat and clear the input box
+    return messages, ""
 
 
+# Define the Gradio app
 with gr.Blocks(theme="rawrsor1/Everforest") as app:
     gr.Markdown("## Welcome to Annie's Chatbot - Your Friendly Guide to Birmingham!")
     
-    chatbot = gr.Chatbot([("System", "Hi! How can I assist you today?")], elem_id="RADAR", bubble_full_width=False)
+    chatbot = gr.Chatbot([], elem_id="RADAR", bubble_full_width=False)
     question_input = gr.Textbox(label="Ask a Question", placeholder="Type your question here...")
     submit_btn = gr.Button("Submit")
     
     # Set up interaction
     submit_btn.click(
-        rag_chain_response,  # Function to handle input and generate response
-        inputs=[chatbot],    # Pass current conversation state
-        outputs=[chatbot]    # Update conversation state
+        rag_chain_response,          # Function to handle input and generate response
+        inputs=[chatbot, question_input],  # Pass current conversation state and user input
+        outputs=[chatbot, question_input]  # Update conversation state and clear the input
     )
 
 # Launch the Gradio app