Include the redirect URL in the Google Drive instructions

homeassistant/components/google_drive/application_credentials.py

@@ -2,6 +2,7 @@
 
 from homeassistant.components.application_credentials import AuthorizationServer
 from homeassistant.core import HomeAssistant
+from homeassistant.helpers import config_entry_oauth2_flow
 
 
 async def async_get_authorization_server(hass: HomeAssistant) -> AuthorizationServer:
@@ -18,4 +19,5 @@ async def async_get_description_placeholders(hass: HomeAssistant) -> dict[str, s
         "oauth_consent_url": "https://console.cloud.google.com/apis/credentials/consent",
         "more_info_url": "https://www.home-assistant.io/integrations/google_drive/",
         "oauth_creds_url": "https://console.cloud.google.com/apis/credentials",
+        "redirect_url": config_entry_oauth2_flow.async_get_redirect_uri(hass),
     }

homeassistant/components/google_drive/strings.json

@@ -35,6 +35,6 @@
     }
   },
   "application_credentials": {
-    "description": "Follow the [instructions]({more_info_url}) for [OAuth consent screen]({oauth_consent_url}) to give Home Assistant access to your Google Drive. You also need to create Application Credentials linked to your account:\n1. Go to [Credentials]({oauth_creds_url}) and select **Create Credentials**.\n1. From the drop-down list select **OAuth client ID**.\n1. Select **Web application** for the Application Type."
+    "description": "Follow the [instructions]({more_info_url}) to configure the Cloud Console:\n\n1. Go to the [OAuth consent screen]({oauth_consent_url}) and configure\n1. Go to [Credentials]({oauth_creds_url}) and select **Create Credentials**.\n1. From the drop-down list select **OAuth client ID**.\n1. Select **Web application** for the Application Type.\n1. Add `{redirect_url}` under *Authorized redirect URI*."
   }
 }

homeassistant/helpers/config_entry_oauth2_flow.py

@@ -55,6 +55,21 @@
 OAUTH_TOKEN_TIMEOUT_SEC = 30
 
 
+@callback
+def async_get_redirect_uri(hass: HomeAssistant) -> str:
+    """Return the redirect uri."""
+    if "my" in hass.config.components:
+        return MY_AUTH_CALLBACK_PATH
+
+    if (req := http.current_request.get()) is None:
+        raise RuntimeError("No current request in context")
+
+    if (ha_host := req.headers.get(HEADER_FRONTEND_BASE)) is None:
+        raise RuntimeError("No header in request")
+
+    return f"{ha_host}{AUTH_CALLBACK_PATH}"
+
+
 class AbstractOAuth2Implementation(ABC):
     """Base class to abstract OAuth2 authentication."""
 
@@ -144,16 +159,7 @@
     @property
     def redirect_uri(self) -> str:
         """Return the redirect uri."""
-        if "my" in self.hass.config.components:
-            return MY_AUTH_CALLBACK_PATH
-
-        if (req := http.current_request.get()) is None:
-            raise RuntimeError("No current request in context")
-
-        if (ha_host := req.headers.get(HEADER_FRONTEND_BASE)) is None:
-            raise RuntimeError("No header in request")
-
-        return f"{ha_host}{AUTH_CALLBACK_PATH}"
+        return async_get_redirect_uri(self.hass)
 
     @property
     def extra_authorize_data(self) -> dict: