Disable welcome page if the new features are enabled (#86)

* Disable welcome page if frontend injection is enabled
* Make button indicate redirecting

custom_components/auth_oidc/endpoints/welcome.py

@@ -2,7 +2,7 @@
 
 from aiohttp import web
 from homeassistant.components.http import HomeAssistantView
-from ..helpers import get_view
+from ..helpers import get_url, get_view
 
 PATH = "/auth/oidc/welcome"
 
@@ -14,10 +14,15 @@ class OIDCWelcomeView(HomeAssistantView):
     url = PATH
     name = "auth:oidc:welcome"
 
-    def __init__(self, name: str) -> None:
+    def __init__(self, name: str, is_frontend_injection_enabled: bool) -> None:
         self.name = name
+        self.is_enabled = not is_frontend_injection_enabled
 
     async def get(self, _: web.Request) -> web.Response:
         """Receive response."""
+
+        if not self.is_enabled:
+            return web.HTTPTemporaryRedirect(get_url("/"))
+
         view_html = await get_view("welcome", {"name": self.name})
         return web.Response(text=view_html, content_type="text/html")