fix: using oauth approach

app.py

@@ -245,16 +245,19 @@ def vote(data: gr.LikeData):
         ]
         jsonlfile.write("\n".join(json_data) + "\n")
 
-def create_greeting(request: gr.Request):
+def hello(profile: gr.OAuthProfile | None) -> str:
     global USERNAME
-    print(dir(request))
-    USERNAME = request.username
-    return gr.Markdown.update(value=f"Thanks for logging in, {request.username}")
-
+    if profile is None:
+        USERNAME = "guest"
+        return "I don't know you."
+    USERNAME = profile.name
+    return f"Hello {profile.name}"
+    
 with gr.Blocks(css=CSS) as demo:
 
-    user_ip = gr.Markdown(value="Not logged in")
-    demo.load(create_greeting, inputs=None, outputs=user_ip)
+    gr.LoginButton()
+    gr.LogoutButton()
+    gr.Markdown().attach_load_event(hello, None)
     
     with gr.Row():
         with gr.Column():