fix chat format for new Gradio message API

app.py

@@ -6,13 +6,18 @@ from openai import OpenAI
 client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
 
 def chat_with_openai(message, history):
-    # build conversation history
     messages = [{"role": "system", "content": "You are Neuro, a concise helpful AI assistant."}]
-    for human, ai in history or []:
-        messages.append({"role": "user", "content": human})
-        messages.append({"role": "assistant", "content": ai})
+    for m in history:
+        messages.append(m)
     messages.append({"role": "user", "content": message})
 
+    response = client.chat.completions.create(
+        model="gpt-4o-mini",
+        messages=messages,
+    )
+    reply = response.choices[0].message.content
+    return history + [{"role": "assistant", "content": reply}]
+
     # call model
     response = client.chat.completions.create(
         model="gpt-4o-mini",
@@ -20,7 +25,7 @@ def chat_with_openai(message, history):
     )
     reply = response.choices[0].message.content
     history = history + [(message, reply)]
-    return history, history
+    return history + [{"role": "assistant", "content": reply}]
 
 demo = gr.ChatInterface(
     fn=chat_with_openai,