Implement initial flow (#2)

custom_components/auth_oidc/endpoints/welcome.py

@@ -0,0 +1,24 @@
+from aiohttp import web
+from homeassistant.components.http import HomeAssistantView
+import logging
+
+PATH = "/auth/oidc/welcome"
+
+_LOGGER = logging.getLogger(__name__)
+
+class OIDCWelcomeView(HomeAssistantView):
+    """OIDC Plugin Welcome View."""
+
+    requires_auth = False
+    url = PATH
+    name = "auth:oidc:welcome"
+
+    async def get(self, request: web.Request) -> web.Response:
+        """Receive response."""
+
+        _LOGGER.debug("Welcome view accessed")
+
+        return web.Response(
+            headers={"content-type": "text/html"},
+            text="<h1>OIDC Login (beta)</h1><p><a href='/auth/oidc/redirect'>Login with OIDC</a></p>",
+        )