fix: update GitHub provider to support Enterprise Server (#3803)

See also: SwissDataScienceCenter/renku-data-services#979

Author: leafty

client/src/features/connectedServices/ConnectedServicesPage.tsx

@@ -56,6 +56,7 @@ import {
 } from "./api/connectedServices.api";
 import { AppInstallationsPaginated } from "./api/connectedServices.types";
 import ContactUsCard from "./ContactUsCard";
+import { getSettingsUrl } from "./connectedServices.utils";
 
 const CHECK_STATUS_QUERY_PARAM = "check-status";
 
@@ -340,12 +341,10 @@ function GitHubAppInstallations({
     "This application"
   );
 
-  const settingsUrl = provider.app_slug
-    ? safeNewUrl(
-        `apps/${provider.app_slug}/installations/select_target`,
-        provider.url
-      )
-    : null;
+  const settingsUrl = getSettingsUrl({
+    app_slug: provider.app_slug,
+    url: provider.url,
+  });
 
   const refreshInstallationsButton = (
     <Button

client/src/features/connectedServices/connectedServices.utils.ts

@@ -0,0 +1,38 @@
+/*!
+ * Copyright 2025 - Swiss Data Science Center (SDSC)
+ * A partnership between École Polytechnique Fédérale de Lausanne (EPFL) and
+ * Eidgenössische Technische Hochschule Zürich (ETHZ).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { safeNewUrl } from "~/utils/helpers/safeNewUrl.utils";
+import type { Provider } from "./api/connectedServices.api";
+
+type GetSettingsUrlArgs = Pick<Provider, "app_slug" | "url">;
+
+export function getSettingsUrl({
+  app_slug,
+  url,
+}: GetSettingsUrlArgs): URL | null {
+  if (!app_slug) {
+    return null;
+  }
+
+  const parsedUrl = safeNewUrl(url);
+  if (parsedUrl?.hostname.toLowerCase() === "github.com") {
+    return safeNewUrl(`apps/${app_slug}/installations/select_target`, url);
+  }
+
+  return safeNewUrl(`github-apps/${app_slug}/installations/select_target`, url);
+}