import gradio as gr

# Assuming 'client', 'system', and 'respond' are defined elsewhere in your script

def clear_chat():
    global chat
    chat = client.chata.create(
        model="gemini-2.5-flash",
        config={
            "system_instruction": system
        }
    )
    # Gradio blocks click functions expect returned updates to match the outputs list.
    # We return empty lists/None to clear the chatbot and state.
    return [], None

with gr.Blocks(title="AI Study Tutor") as demo:
    gr.Markdown("# Study Mate AI")
    gr.Markdown("Ask any study-related question")
    
    # Note: If using an external state variable, you'll want to manage it in the interface
    chotbot = gr.ChatInterface(
        fn=respond,
    )
    
    clear_btn = gr.Button("Clear Chat")
    
    # Make sure the button variable matches (clear_btn) and Python's True is capitalized
    clear_btn.click(
        fn=clear_chat,
        inputs=None,
        outputs=[chotbot, chotbot] # Adjust outputs based on what clear_chat returns
    )

demo.launch(share=True)