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>'
        )
    with gr.Blocks() as iface:
        gr.Markdown(f"Hello {profile.name}")
        gr.Interface(fn=greet, inputs="text", outputs="text")
    return iface


with gr.Blocks() as demo:
    hello()
    with gr.Row():
        gr.LoginButton()
        if gr.OAuthProfile is not None:
            gr.LogoutButton()
demo.launch()