Fix Withings authentication to leverage default redirect URI (#79158)

homeassistant/components/withings/common.py

@@ -44,12 +44,10 @@ from homeassistant.core import CALLBACK_TYPE, HomeAssistant, callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_entry_oauth2_flow, entity_registry as er
 from homeassistant.helpers.config_entry_oauth2_flow import (
-    AUTH_CALLBACK_PATH,
     AbstractOAuth2Implementation,
     OAuth2Session,
 )
 from homeassistant.helpers.entity import Entity
-from homeassistant.helpers.network import get_url
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 from homeassistant.util import dt
 
@@ -1084,12 +1082,6 @@ def get_platform_attributes(platform: str) -> tuple[WithingsAttribute, ...]:
 class WithingsLocalOAuth2Implementation(AuthImplementation):
     """Oauth2 implementation that only uses the external url."""
 
-    @property
-    def redirect_uri(self) -> str:
-        """Return the redirect uri."""
-        url = get_url(self.hass, allow_internal=False, prefer_cloud=True)
-        return f"{url}{AUTH_CALLBACK_PATH}"
-
     async def _token_request(self, data: dict) -> dict:
         """Make a token request and adapt Withings API reply."""
         new_token = await super()._token_request(data)

tests/components/withings/common.py

@@ -201,14 +201,14 @@ class ComponentFactory:
             self._hass,
             {
                 "flow_id": result["flow_id"],
-                "redirect_uri": "http://127.0.0.1:8080/auth/external/callback",
+                "redirect_uri": "https://example.com/auth/external/callback",
             },
         )
         assert result["type"] == data_entry_flow.FlowResultType.EXTERNAL_STEP
         assert result["url"] == (
             "https://account.withings.com/oauth2_user/authorize2?"
             f"response_type=code&client_id={self._client_id}&"
-            "redirect_uri=http://127.0.0.1:8080/auth/external/callback&"
+            "redirect_uri=https://example.com/auth/external/callback&"
             f"state={state}"
             "&scope=user.info,user.metrics,user.activity,user.sleepevents"
         )

tests/components/withings/conftest.py

@@ -13,7 +13,10 @@ from tests.test_util.aiohttp import AiohttpClientMocker
 
 @pytest.fixture()
 def component_factory(
-    hass: HomeAssistant, hass_client_no_auth, aioclient_mock: AiohttpClientMocker
+    hass: HomeAssistant,
+    hass_client_no_auth,
+    aioclient_mock: AiohttpClientMocker,
+    current_request_with_host: None,
 ):
     """Return a factory for initializing the withings component."""
     with patch(