Single oauth button (#7063)

* Single oauth button

* add changeset

* fix redirect if custom button value

* better js injection

* Update gradio/components/login_button.py

* add deprecation warning to docstring

* robust comparison

---------

Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>

.changeset/wise-moments-agree.md

@@ -0,0 +1,5 @@
+---
+"gradio": minor
+---
+
+feat:Single oauth button

gradio/components/login_button.py

@@ -1,6 +1,7 @@
 """Predefined button to sign in with Hugging Face in a Gradio Space."""
 from __future__ import annotations
 
+import json
 import warnings
 from typing import Literal
 
@@ -24,7 +25,7 @@ class LoginButton(Button):
     def __init__(
         self,
         value: str = "Sign in with Hugging Face",
-        signed_in_value: str = "Signed in as {}",
+        logout_value: str = "Logout ({})",
         *,
         every: float | None = None,
         variant: Literal["primary", "secondary", "stop"] = "secondary",
@@ -39,14 +40,17 @@ def __init__(
         render: bool = True,
         scale: int | None = 0,
         min_width: int | None = None,
+        signed_in_value: str = "Signed in as {}",
     ):
         """
         Parameters:
-            signed_in_value: The text to display when the user is signed in. The string should contain a placeholder for the username, e.g. "Signed in as {}".
+            logout_value: The text to display when the user is signed in. The string should contain a placeholder for the username with a call-to-action to logout, e.g. "Logout ({})".
         """
-        if signed_in_value is None:
-            signed_in_value = "Signed in as {}"
-        self.signed_in_value = signed_in_value
+        if signed_in_value != "Signed in as {}":
+            warnings.warn(
+                "The `signed_in_value` parameter is deprecated. Please use `logout_value` instead."
+            )
+        self.logout_value = logout_value
         super().__init__(
             value,
             every=every,
@@ -73,7 +77,10 @@ def activate(self):
         # Taken from https://cmgdo.com/external-link-in-gradio-button/
         # Taking `self` as input to check if user is logged in
         # ('self' value will be either "Sign in with Hugging Face" or "Signed in as ...")
-        self.click(fn=None, inputs=[self], outputs=None, js=_js_open_if_not_logged_in)
+        _js = _js_handle_redirect.replace(
+            "BUTTON_DEFAULT_VALUE", json.dumps(self.value)
+        )
+        self.click(fn=None, inputs=[self], outputs=None, js=_js)
 
         self.attach_load_event(self._check_login_status, None)
 
@@ -86,21 +93,24 @@ def _check_login_status(self, request: Request) -> LoginButton:
             return LoginButton(value=self.value, interactive=True)
         else:
             username = session["oauth_info"]["userinfo"]["preferred_username"]
-            signed_in_text = self.signed_in_value.format(username)
-            return LoginButton(signed_in_text, interactive=False)
+            logout_text = self.logout_value.format(username)
+            return LoginButton(logout_text, interactive=True)
 
 
 # JS code to redirects to /login/huggingface if user is not logged in.
 # If the app is opened in an iframe, open the login page in a new tab.
 # Otherwise, redirects locally. Taken from https://stackoverflow.com/a/61596084.
-_js_open_if_not_logged_in = """
+# If user is logged in, redirect to logout page (always in-place).
+_js_handle_redirect = """
 (buttonValue) => {
-    if (!buttonValue.includes("Signed in")) {
+    if (buttonValue === BUTTON_DEFAULT_VALUE) {
         if ( window !== window.parent ) {
             window.open('/login/huggingface', '_blank');
         } else {
             window.location.assign('/login/huggingface');
         }
+    } else {
+        window.location.assign('/logout');
     }
 }
 """

gradio/components/logout_button.py

@@ -1,6 +1,7 @@
 """Predefined button to sign out from Hugging Face in a Gradio Space."""
 from __future__ import annotations
 
+import warnings
 from typing import Literal
 
 from gradio_client.documentation import document, set_documentation_group
@@ -14,6 +15,9 @@
 class LogoutButton(Button):
     """
     Button to log out a user from a Space.
+
+    Note: `LogoutButton` component is deprecated. Please use `gr.LoginButton` instead
+          which handles both the login and logout processes.
     """
 
     is_template = True
@@ -37,6 +41,9 @@ def __init__(
         scale: int | None = 0,
         min_width: int | None = None,
     ):
+        warnings.warn(
+            "The `gr.LogoutButton` component is deprecated. Please use `gr.LoginButton` instead which handles both the login and logout processes."
+        )
         super().__init__(
             value,
             every=every,