Show warning dialog when app doesnt exist in mnger

Author: mahendrapaipuri

labextension/src/restapi.ts

@@ -1,11 +1,13 @@
 import { URLExt } from "@jupyterlab/coreutils";
+import { showDialog, Dialog } from '@jupyterlab/apputils';
 import { ServerConnection } from "@jupyterlab/services";
+import { TranslationBundle } from '@jupyterlab/translation';
 import { IModel } from "./serverproxy";
 
 /**
  * The url for the server proxy service.
  */
-const SERVER_PROXY_SERVICE_URL = "api/server-proxy";
+const SERVER_PROXY_SERVICE_URL = "server-proxy/api/servers/";
 
 /**
  * List the running server proxy apps.
@@ -43,13 +45,24 @@ export async function listRunning(
  */
 export async function shutdown(
   name: string,
+  trans: TranslationBundle,
   settings: ServerConnection.ISettings = ServerConnection.makeSettings(),
 ): Promise<void> {
   const url = URLExt.join(settings.baseUrl, SERVER_PROXY_SERVICE_URL, name);
   const init = { method: "DELETE" };
   const response = await ServerConnection.makeRequest(url, init, settings);
   if (response.status === 404) {
-    const msg = `Server proxy "${name}" does not exist. Are you sure "${name}" is started by jupyter-server-proxy?`;
+    const msg = trans.__(`Server proxy "${name}" is not running anymore. It will be removed from this list shortly`);
+    console.warn(msg);
+    void showDialog({
+      title: trans.__('Warning'),
+      body: msg,
+      buttons: [Dialog.okButton({ label : 'Dismiss'})],
+    });
+  } else if (response.status === 403) {
+    // This request cannot be made via JupyterLab UI and hence we just throw
+    // console log
+    const msg = trans.__(`Provide a running server proxy name to terminate`);
     console.warn(msg);
   } else if (response.status !== 204) {
     const err = await ServerConnection.ResponseError.create(response);