app.py

import gradio as gr
import requests

# 🔗 Put your Kaggle API URL later
KAGGLE_API_URL = "https://your-kaggle-endpoint.run"

def chat(message, history):
    try:
        r = requests.post(
            KAGGLE_API_URL,
            json={"message": message},
            timeout=60
        )
        return r.json()["reply"]
    except:
        return "⚠️ Backend not running. Start Kaggle session."

with gr.Blocks(title="Free AI Chat") as demo:
    gr.Markdown("# 🤖 Free AI Chat (CPU)")
    gr.Markdown("Start Kaggle session before chatting.")

    chatbot = gr.Chatbot()
    msg = gr.Textbox(placeholder="Type your message...")

    def respond(message, chat_history):
        reply = chat(message, chat_history)
        chat_history.append((message, reply))
        return "", chat_history

    msg.submit(respond, [msg, chatbot], [msg, chatbot])

demo.launch()