feat(scripts): add getEventById and join-url extractor

scripts/lib/o365-calendar.js

@@ -95,4 +95,36 @@ async function getCalendarEvents(daysAhead = 7) {
   return (response.value || []).map(parseEventToMeeting);
 }
 
-module.exports = { isRecurring, parseEventToMeeting, formatEventChoice, getCalendarEvents };
+function extractJoinUrlFromBody(body) {
+  if (!body) return null;
+  const m = body.match(/https:\/\/teams\.microsoft\.com\/l\/meetup-join\/[^\s"'<>]+/);
+  return m ? m[0] : null;
+}
+
+async function getEventById(eventId) {
+  const env = loadEnv();
+  const cca = new ConfidentialClientApplication({
+    auth: {
+      clientId: env.AZURE_CLIENT_ID,
+      clientSecret: env.AZURE_CLIENT_SECRET,
+      authority: `https://login.microsoftonline.com/${env.AZURE_TENANT_ID}`
+    }
+  });
+  const tokenResponse = await cca.acquireTokenByClientCredential({
+    scopes: ['https://graph.microsoft.com/.default']
+  });
+  const client = Client.init({
+    authProvider: (done) => done(null, tokenResponse.accessToken)
+  });
+
+  const event = await client
+    .api(`/users/${env.AZURE_USER_EMAIL}/events/${eventId}`)
+    .select('id,subject,start,end,body,attendees,seriesMasterId,onlineMeeting')
+    .get();
+  return event;
+}
+
+module.exports = {
+  isRecurring, parseEventToMeeting, formatEventChoice,
+  getCalendarEvents, getEventById, extractJoinUrlFromBody
+};

scripts/test/o365-calendar.test.js

@@ -80,3 +80,19 @@ describe('isRecurring', () => {
     assert.equal(isRecurring({ seriesMasterId: null }), false);
   });
 });
+
+const { extractJoinUrlFromBody } = require('../lib/o365-calendar.js');
+
+describe('extractJoinUrlFromBody', () => {
+  it('extracts teams meeting join URL from body html', () => {
+    const html = '<a href="https://teams.microsoft.com/l/meetup-join/19%3aabc/0?context=foo">Join</a>';
+    assert.equal(
+      extractJoinUrlFromBody(html),
+      'https://teams.microsoft.com/l/meetup-join/19%3aabc/0?context=foo'
+    );
+  });
+
+  it('returns null when no teams url present', () => {
+    assert.equal(extractJoinUrlFromBody('<p>nothing</p>'), null);
+  });
+});