app.py

import gradio as gr
from openai import OpenAI
import os

client = OpenAI(
    api_key=os.getenv("OPENAI_API_KEY"),
    base_url="https://api.chatanywhere.tech/v1"
)

def respond(user_message, history):
    history = history or []
    messages = [{"role": "system", "content": "You are a helpful assistant."}]
    for human, ai in history:
        messages.append({"role": "user", "content": human})
        messages.append({"role": "assistant", "content": ai})
    messages.append({"role": "user", "content": user_message})
    try:
        response = client.chat.completions.create(
            model="gpt-3.5-turbo",
            messages=messages
        )
        bot_reply = response.choices[0].message.content
    except Exception as e:
        bot_reply = f"❌ Error: {e}"
    history.append((user_message, bot_reply))
    return history

chat = gr.Chatbot(
    label="Conversation",
    avatar_images=(None, None),
    bubble_full_width=False,
    height=420,
    show_copy_button=True,
    render_markdown=True
)

with gr.Blocks() as demo:
    chatbot = chat
    msg = gr.Textbox(placeholder="Type your message here...")
    msg.submit(respond, [msg, chatbot], chatbot)

if __name__ == "__main__":
    demo.launch()