[lib] Add staff-only alert for when notifsSessionReassignmentPromise …

…reassigns a notif session

Summary: https://linear.app/comm/issue/ENG-9935/staff-only-alert-for-when-notifssessionreassignmentpromise-reassigns-a

Test Plan: Login on Safari

Reviewers: kamil, tomek

Reviewed By: kamil

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13953

lib/keyserver-conn/keyserver-connection-handler.js

@@ -14,6 +14,7 @@ import {
 } from '../selectors/keyserver-selectors.js';
 import { isLoggedInToKeyserver } from '../selectors/user-selectors.js';
 import { useInitialNotificationsEncryptedMessage } from '../shared/crypto-utils.js';
+import { useStaffAlert } from '../shared/staff-utils.js';
 import type { BaseSocketProps } from '../socket/socket.react.js';
 import {
   logInActionSources,
@@ -50,6 +51,8 @@ function KeyserverConnectionHandler(props: Props) {
   const prevCookieRef = React.useRef(cookie);
   const notifsSessionReassignmentPromise = React.useRef<?Promise<mixed>>(null);
 
+  const { showAlertToStaff } = useStaffAlert();
+
   React.useEffect(() => {
     const prevCookie = prevCookieRef.current;
     prevCookieRef.current = cookie;
@@ -58,6 +61,13 @@ function KeyserverConnectionHandler(props: Props) {
       return;
     }
 
+    if (prevCookie) {
+      showAlertToStaff(
+        'Reassigning a notif session',
+        `prevCookie=${prevCookie} cookie=${cookie}`,
+      );
+    }
+
     notifsSessionReassignmentPromise.current = (async () => {
       await notifsSessionReassignmentPromise.current;
       await olmAPI.reassignNotificationsSession?.(
@@ -66,7 +76,7 @@ function KeyserverConnectionHandler(props: Props) {
         keyserverID,
       );
     })();
-  }, [cookie, keyserverID, olmAPI]);
+  }, [cookie, keyserverID, olmAPI, showAlertToStaff]);
 
   const dataLoaded = useSelector(state => state.dataLoaded);