feat: send Slack notification for removed users in HackerRank queue

Author: kylehoehns

src/cron/__tests__/checkAllUsersActive.test.ts

@@ -32,4 +32,46 @@ describe('checkAllUsersActive', () => {
     expect(userRepo.remove).toHaveBeenCalledTimes(1);
     expect(userRepo.remove).toHaveBeenCalledWith('B');
   });
+
+  it('should send a Slack notification when users are removed', async () => {
+    const app = buildMockApp();
+    userRepo.listAll = jest.fn().mockResolvedValue([
+      { id: 'A', name: 'Alice Smith', languages: [], lastReviewedDate: 1 },
+      { id: 'B', name: 'Bob Jones', languages: [], lastReviewedDate: 2 },
+      { id: 'C', name: 'Charlie Brown', languages: [], lastReviewedDate: 3 },
+    ]);
+    userRepo.remove = jest.fn();
+    // First user active, second and third inactive
+    userService.isActive = jest
+      .fn()
+      .mockResolvedValueOnce(true)
+      .mockResolvedValueOnce(false)
+      .mockResolvedValueOnce(false);
+
+    await checkAllUsersActive(app);
+
+    // Verify users were removed
+    expect(userRepo.remove).toHaveBeenCalledTimes(2);
+    expect(userRepo.remove).toHaveBeenCalledWith('B');
+    expect(userRepo.remove).toHaveBeenCalledWith('C');
+
+    // Verify Slack notification was sent
+    expect(app.client.chat.postMessage).toHaveBeenCalledTimes(1);
+    expect(app.client.chat.postMessage).toHaveBeenCalledWith(
+      expect.objectContaining({
+        channel: process.env.ERRORS_CHANNEL_ID,
+        text: expect.stringContaining('User(s) removed from HackerRank queue'),
+      }),
+    );
+
+    // Verify the message contains the removed users' names
+    const callArgs = (app.client.chat.postMessage as jest.Mock).mock.calls[0][0];
+    expect(callArgs.text).toContain('Bob Jones');
+    expect(callArgs.text).toContain('Charlie Brown');
+
+    // Verify the message contains the Confluence link
+    expect(callArgs.text).toContain(
+      'https://allies.atlassian.net/wiki/spaces/REI/pages/4852121601/HackerRank+Roles+and+Permissions#Deactivating-a-User',
+    );
+  });
 });

src/cron/checkAllUsersActive.ts

@@ -16,6 +16,7 @@ export async function checkAllUsersActive(app: App): Promise<void> {
     const allUsers = await userRepo.listAll();
 
     let allActive = true;
+    const removedUsers: string[] = [];
     for (const user of allUsers) {
       const active = await userService.isActive(app.client, user.id);
       if (!active) {
@@ -25,10 +26,25 @@ export async function checkAllUsersActive(app: App): Promise<void> {
           `Removing deactivated user (${user.name}) from user sheet.`,
         );
         await userRepo.remove(user.id);
+        removedUsers.push(user.name);
       }
     }
     if (allActive) {
       log.d('cron.checkAllUsersActive', '✔ All users are still active');
+    } else if (removedUsers.length > 0) {
+      // Notify about removed users who need HackerRank account deactivation
+      const userList = removedUsers.map(name => `• ${name}`).join('\n');
+      const deactivationLink =
+        'https://allies.atlassian.net/wiki/spaces/REI/pages/4852121601/HackerRank+Roles+and+Permissions#Deactivating-a-User';
+      const message = compose(
+        `🚨 *User(s) removed from HackerRank queue* - No longer in Slack workspace`,
+        '',
+        userList,
+        '',
+        `⚠️ *Action Required:* Lock their HackerRank account(s)`,
+        `📖 <${deactivationLink}|Deactivation Instructions>`,
+      );
+      await chatService.postTextMessage(app.client, process.env.ERRORS_CHANNEL_ID, message);
     }
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
   } catch (err: any) {