app.py

import gradio as gr

def greet(name):
    return "Hello " + name + "!!"


def hello(profile: gr.OAuthProfile | None):
    if profile is None:
        return gr.Markdown(
            '# ePub summarization tool  '
            '<p style="text-align: center;">Login to access the tool.</p>'
        )
    return f"Hello {profile.name}"


with gr.Blocks() as demo:
    with gr.Row():
        gr.LoginButton()
        gr.LogoutButton()
    gr.File()
    gr.Markdown().attach_load_event(hello, None)

demo.launch()