Enable cache headers on styling (#270)

custom_components/auth_oidc/__init__.py

@@ -6,6 +6,7 @@ from typing import OrderedDict
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
+from homeassistant.components.http import StaticPathConfig
 
 # Import and re-export config schema explictly
 # pylint: disable=useless-import-alias
@@ -146,6 +147,16 @@ async def _setup_oidc_provider(hass: HomeAssistant, my_config: dict, display_nam
 
     force_https = features_config.get(FEATURES_FORCE_HTTPS, False)
 
+    await hass.http.async_register_static_paths(
+        [
+            StaticPathConfig(
+                "/auth/oidc/static/style.css",
+                hass.config.path("custom_components/auth_oidc/static/style.css"),
+                cache_headers=True,
+            ),
+        ]
+    )
+
     hass.http.register_view(
         OIDCWelcomeView(provider, name, force_https, has_other_auth_providers)
     )