fix: updated for Gradio messages API

app.py

@@ -2,35 +2,32 @@ import os
 import gradio as gr
 from openai import OpenAI
 
-# create client using key from environment
+# Create client using key from Hugging Face → Settings → Variables
 client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
 
-def chat_with_openai(message, history):
-    messages = [{"role": "system", "content": "You are Neuro, a concise helpful AI assistant."}]
-    for m in history:
-        messages.append(m)
-    messages.append({"role": "user", "content": message})
+def chat_with_openai(messages, history):
+    """
+    messages: list of dicts [{"role": "user"/"assistant"/"system", "content": "..."}]
+    history: ignored; Gradio passes messages now.
+    """
+    # prepend system prompt
+    context = [{"role": "system", "content": "You are Neuro, a concise helpful AI assistant."}]
+    context.extend(messages)
 
     response = client.chat.completions.create(
         model="gpt-4o-mini",
-        messages=messages,
+        messages=context,
     )
     reply = response.choices[0].message.content
-    return history + [{"role": "assistant", "content": reply}]
-
-    # call model
-    response = client.chat.completions.create(
-        model="gpt-4o-mini",
-        messages=messages,
-    )
-    reply = response.choices[0].message.content
-    history = history + [(message, reply)]
-    return history + [{"role": "assistant", "content": reply}]
+    # Append assistant message for the next turn
+    messages.append({"role": "assistant", "content": reply})
+    return messages
 
 demo = gr.ChatInterface(
     fn=chat_with_openai,
-    title="🧠 Neuro Chat via OpenAI",
-    description="Chat interface powered by OpenAI API."
+    type="messages",  # REQUIRED to use new message schema
+    title="🧠 Neuro Chat Demo",
+    description="OpenAI-powered chat demo using the new Gradio message API."
 )
 
 if __name__ == "__main__":