Add basic provider to test frontend parts

custom_components/auth_oidc/callback.py

@@ -0,0 +1,41 @@
+from aiohttp import web
+from homeassistant.components.http import HomeAssistantView
+from homeassistant.core import HomeAssistant, callback
+import logging
+
+DATA_VIEW_REGISTERED = "oauth2_view_reg"
+AUTH_CALLBACK_PATH = "/auth/oidc/callback"
+
+_LOGGER = logging.getLogger(__name__)
+
+@callback
+def async_register_view(hass: HomeAssistant) -> None:
+    """Make sure callback view is registered."""
+    if not hass.data.get(DATA_VIEW_REGISTERED, False):
+        hass.http.register_view(OAuth2AuthorizeCallbackView())  # type: ignore
+        hass.data[DATA_VIEW_REGISTERED] = True
+
+
+class OAuth2AuthorizeCallbackView(HomeAssistantView):
+    """OAuth2 Authorization Callback View."""
+
+    requires_auth = False
+    url = AUTH_CALLBACK_PATH
+    name = "auth:oidc:callback"
+
+    async def get(self, request: web.Request) -> web.Response:
+        """Receive response."""
+
+        _LOGGER.debug(request.query)
+
+        hass = request.app["hass"]
+        flow_mgr = hass.auth.login_flow
+
+        await flow_mgr.async_configure(
+            flow_id=request.query["flow_id"], user_input=request.query["test"]
+        )
+
+        return web.Response(
+            headers={"content-type": "text/html"},
+            text="<script>if (window.opener) { window.opener.postMessage({type: 'externalCallback'}); } window.close();</script>",
+        )