Zoom General

┌────────────────────────────────────────────────────────────────┐
│ SETUP PHASE (One-time in Marketplace Portal):                  │
│                                                                 │
│ 1. Configure Event Subscriptions                               │
│    └── Subscribe to: meeting.started, meeting.ended, etc.      │
│    └── Provide webhook endpoint URL                            │
│    └── Get webhook secret token                                │
└────────────────────────────────────────────────────────────────┘
                             │
                             ▼
┌────────────────────────────────────────────────────────────────┐
│ RUNTIME PHASE:                                                  │
│                                                                 │
│ Step 1: GET /meetings/{meetingId} (zoom-rest-api)              │
│         └── Get meeting details (topic, join_url, host, etc.)  │
│                                                                 │
│ Step 2: Store meeting ID for filtering                         │
│         └── Your backend remembers which meetings to track     │
│                                                                 │
│ Step 3: POST /webhooks/zoom (webhooks)               │
│         └── Zoom sends events for ALL meetings                 │
│         └── Filter by meeting ID in your handler               │
│         └── Process: started, ended, participant events        │
└────────────────────────────────────────────────────────────────┘

const express = require('express');
const axios = require('axios');
const crypto = require('crypto');

const app = express();
app.use(express.json());

// Track which meetings we care about (use Redis/DB in production)
const trackedMeetings = new Set();

// ============================================
// STEP 1: Retrieve Meeting Details (zoom-rest-api)
// ============================================

async function getAccessToken() {
  const credentials = Buffer.from(
    `${process.env.ZOOM_CLIENT_ID}:${process.env.ZOOM_CLIENT_SECRET}`
  ).toString('base64');

  const response = await axios.post(
    `https://zoom.us/oauth/token?grant_type=account_credentials&account_id=${process.env.ZOOM_ACCOUNT_ID}`,
    null,
    { headers: { 'Authorization': `Basic ${credentials}` } }
  );

  return response.data.access_token;
}

async function getMeetingDetails(meetingId) {
  const token = await getAccessToken();

  const response = await axios.get(
    `https://api.zoom.us/v2/meetings/${meetingId}`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return response.data;
}

// API: Fetch meeting and start tracking it
app.get('/api/meetings/:meetingId', async (req, res) => {
  try {
    const { meetingId } = req.params;

    // Get meeting details
    const meeting = await getMeetingDetails(meetingId);

    // Add to tracked set (events for this meeting will be processed)
    trackedMeetings.add(String(meeting.id));

    console.log(`✅ Now tracking meeting: ${meeting.topic} (${meeting.id})`);

    res.json({
      success: true,
      meeting: {
        id: meeting.id,
        topic: meeting.topic,
        start_time: meeting.start_time,
        join_url: meeting.join_url
      },
      message: 'Meeting tracked. Webhook events will be processed for this meeting.'
    });
  } catch (error) {
    res.status(error.response?.status || 500).json({
      success: false,
      error: error.message
    });
  }
});

// ============================================
// STEP 2: Handle Webhook Events (webhooks)
// ============================================

function verifyWebhookSignature(req) {
  const signature = req.headers['x-zm-signature'];
  const timestamp = req.headers['x-zm-request-timestamp'];
  const payload = `v0:${timestamp}:${JSON.stringify(req.body)}`;

  const expectedSignature = `v0=${crypto
    .createHmac('sha256', process.env.ZOOM_WEBHOOK_SECRET)
    .update(payload)
    .digest('hex')}`;

  return signature === expectedSignature;
}

app.post('/webhooks/zoom', async (req, res) => {
  // Handle URL validation challenge
  if (req.body.event === 'endpoint.url_validation') {
    const hash = crypto
      .createHmac('sha256', process.env.ZOOM_WEBHOOK_SECRET)
      .update(req.body.payload.plainToken)
      .digest('hex');

    return res.json({
      plainToken: req.body.payload.plainToken,
      encryptedToken: hash
    });
  }

  // Verify signature
  if (!verifyWebhookSignature(req)) {
    console.error('❌ Invalid webhook signature');
    return res.status(401).send('Invalid signature');
  }

  const { event, payload } = req.body;
  const meetingId = String(payload.object.id);

  // CRITICAL: Filter events - only process tracked meetings
  if (!trackedMeetings.has(meetingId)) {
    console.log(`⏭️  Ignoring event for untracked meeting ${meetingId}`);
    return res.status(200).send();
  }

  // Process events for tracked meetings
  console.log(`📩 Event: ${event} for meeting ${meetingId}`);

  switch (event) {
    case 'meeting.started':
      console.log(`✅ Meeting started: ${payload.object.topic}`);
      // Handle meeting start
      break;

    case 'meeting.ended':
      console.log(`🏁 Meeting ended: ${payload.object.topic}`);
      // Handle meeting end, cleanup
      trackedMeetings.delete(meetingId);
      break;

    case 'meeting.participant_joined':
      console.log(`👋 ${payload.object.participant.user_name} joined`);
      // Track attendance
      break;

    case 'meeting.participant_left':
      console.log(`👋 ${payload.object.participant.user_name} left`);
      // Update attendance
      break;
  }

  res.status(200).send();
});

app.listen(3000, () => {
  console.log('Server running on port 3000');
  console.log('');
  console.log('Endpoints:');
  console.log('  GET  /api/meetings/:id  - Fetch & track meeting');
  console.log('  POST /webhooks/zoom     - Webhook receiver');
});

┌────────────────────────────────────────────────────────────────┐
│ SETUP PHASE (One-time in Marketplace Portal):                  │
│                                                                 │
│ 1. Create Server-to-Server OAuth app                           │
│ 2. Configure WebSocket Event Subscription                      │
│    └── Subscribe to: meeting.started, meeting.ended, etc.      │
│    └── Get subscription ID                                     │
└────────────────────────────────────────────────────────────────┘
                             │
                             ▼
┌────────────────────────────────────────────────────────────────┐
│ RUNTIME PHASE:                                                  │
│                                                                 │
│ Step 1: GET /meetings/{meetingId} (zoom-rest-api)              │
│         └── Get meeting details                                │
│                                                                 │
│ Step 2: Connect to WebSocket (zoom-websockets)                 │
│         └── wss://ws.zoom.us/ws?subscriptionId=...             │
│         └── Authenticate with S2S OAuth access token           │
│                                                                 │
│ Step 3: Receive events via WebSocket                           │
│         └── Filter by meeting ID in message handler            │
│         └── Lower latency than webhooks                        │
└────────────────────────────────────────────────────────────────┘

const axios = require('axios');
const WebSocket = require('ws');

// Track which meetings we care about
const trackedMeetings = new Set();
let ws = null;

// ============================================
// STEP 1: Retrieve Meeting Details (zoom-rest-api)
// ============================================

async function getAccessToken() {
  const credentials = Buffer.from(
    `${process.env.ZOOM_CLIENT_ID}:${process.env.ZOOM_CLIENT_SECRET}`
  ).toString('base64');

  const response = await axios.post(
    'https://zoom.us/oauth/token',
    new URLSearchParams({
      grant_type: 'account_credentials',
      account_id: process.env.ZOOM_ACCOUNT_ID
    }),
    {
      headers: {
        'Authorization': `Basic ${credentials}`,
        'Content-Type': 'application/x-www-form-urlencoded'
      }
    }
  );

  return response.data.access_token;
}

async function getMeetingDetails(meetingId) {
  const token = await getAccessToken();

  const response = await axios.get(
    `https://api.zoom.us/v2/meetings/${meetingId}`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return response.data;
}

// ============================================
// STEP 2: Connect to WebSocket (zoom-websockets)
// ============================================

async function connectWebSocket() {
  const accessToken = await getAccessToken();
  const subscriptionId = process.env.ZOOM_WEBSOCKET_SUBSCRIPTION_ID;

  const wsUrl = `wss://ws.zoom.us/ws?subscriptionId=${subscriptionId}&access_token=${accessToken}`;

  ws = new WebSocket(wsUrl);

  ws.on('open', () => {
    console.log('✅ WebSocket connection established');
  });

  ws.on('message', (data) => {
    const event = JSON.parse(data);
    handleWebSocketEvent(event);
  });

  ws.on('close', () => {
    console.log('❌ WebSocket connection closed. Reconnecting...');
    setTimeout(connectWebSocket, 5000);
  });

  ws.on('error', (error) => {
    console.error('WebSocket error:', error);
  });
}

// ============================================
// STEP 3: Handle WebSocket Events
// ============================================

function handleWebSocketEvent(event) {
  const { event: eventType, payload } = event;
  const meetingId = String(payload?.object?.id);

  // CRITICAL: Filter events - only process tracked meetings
  if (!meetingId || !trackedMeetings.has(meetingId)) {
    return;
  }

  console.log(`📩 WebSocket Event: ${eventType} for meeting ${meetingId}`);

  switch (eventType) {
    case 'meeting.started':
      console.log(`✅ Meeting started: ${payload.object.topic}`);
      break;

    case 'meeting.ended':
      console.log(`🏁 Meeting ended: ${payload.object.topic}`);
      trackedMeetings.delete(meetingId);
      break;

    case 'meeting.participant_joined':
      console.log(`👋 ${payload.object.participant.user_name} joined`);
      break;

    case 'meeting.participant_left':
      console.log(`👋 ${payload.object.participant.user_name} left`);
      break;
  }
}

// ============================================
// USAGE: Track Meeting and Receive Events
// ============================================

async function trackMeeting(meetingId) {
  // Get meeting details
  const meeting = await getMeetingDetails(meetingId);

  // Add to tracked set
  trackedMeetings.add(String(meeting.id));

  console.log(`✅ Now tracking meeting: ${meeting.topic} (${meeting.id})`);
  console.log(`   Events will arrive via WebSocket connection`);

  return meeting;
}

// Initialize WebSocket connection
connectWebSocket();

// Track specific meetings
trackMeeting('123456789').catch(console.error);
trackMeeting('987654321').catch(console.error);

┌────────────────────────────────────────────────────────────────┐
│ RUNTIME PHASE (User-initiated):                                │
│                                                                 │
│ Step 1: GET /meetings/{meetingId} (zoom-rest-api)              │
│         └── Get meeting number, password                       │
│         └── Generate SDK signature (JWT)                       │
│                                                                 │
│ Step 2: ZoomMtg.init() + join() (zoom-meeting-sdk)             │
│         └── User joins meeting in browser                      │
│         └── Receive ZoomMtg instance for event listeners       │
│                                                                 │
│ Step 3: ZoomMtg.inMeetingServiceListener() (zoom-meeting-sdk)  │
│         └── Listen to: onUserJoin, onUserLeave, etc.           │
│         └── Events ONLY for this specific meeting              │
│         └── Real-time UI updates                               │
└────────────────────────────────────────────────────────────────┘

const KJUR = require('jsrsasign');

// Step 1: Get meeting details
async function getMeetingDetails(meetingId) {
  const token = await getAccessToken();

  const response = await axios.get(
    `https://api.zoom.us/v2/meetings/${meetingId}`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return {
    id: response.data.id,
    password: response.data.password,
    topic: response.data.topic,
    join_url: response.data.join_url
  };
}

// Generate Meeting SDK signature
function generateSignature(meetingNumber, role) {
  const iat = Math.floor(Date.now() / 1000) - 30;
  const exp = iat + 60 * 60 * 2; // 2 hours

  const header = { alg: 'HS256', typ: 'JWT' };
  const payload = {
    sdkKey: process.env.ZOOM_SDK_KEY,
    mn: String(meetingNumber).replace(/\D/g, ''),
    role: parseInt(role, 10), // 0 = participant, 1 = host
    iat,
    exp,
    tokenExp: exp
  };

  return KJUR.jws.JWS.sign(
    'HS256',
    JSON.stringify(header),
    JSON.stringify(payload),
    process.env.ZOOM_SDK_SECRET
  );
}

// API endpoint: Get meeting details + signature
app.get('/api/meetings/:meetingId/join', async (req, res) => {
  try {
    const { meetingId } = req.params;
    const { role = 0 } = req.query;

    // Get meeting details from Zoom API
    const meeting = await getMeetingDetails(meetingId);

    // Generate signature for SDK
    const signature = generateSignature(meeting.id, role);

    res.json({
      meetingNumber: meeting.id,
      password: meeting.password,
      signature: signature,
      sdkKey: process.env.ZOOM_SDK_KEY,
      topic: meeting.topic
    });
  } catch (error) {
    res.status(error.response?.status || 500).json({
      error: error.message
    });
  }
});

import { ZoomMtg } from '@zoom/meetingsdk';

// Step 1: Get meeting details + signature from backend
async function getMeetingCredentials(meetingId) {
  const response = await fetch(`/api/meetings/${meetingId}/join`);
  return response.json();
}

// Step 2: Initialize Meeting SDK
async function joinMeeting(meetingId, userName) {
  try {
    // Get meeting details from backend (includes REST API call)
    const credentials = await getMeetingCredentials(meetingId);

    // Preload SDK
    ZoomMtg.preLoadWasm();
    ZoomMtg.prepareWebSDK();

    // Initialize SDK
    ZoomMtg.init({
      leaveUrl: window.location.origin,
      patchJsMedia: true,
      leaveOnPageUnload: true,
      success: () => {
        // Join meeting
        ZoomMtg.join({
          signature: credentials.signature,
          sdkKey: credentials.sdkKey,
          meetingNumber: credentials.meetingNumber,
          passWord: credentials.password,
          userName: userName,
          success: () => {
            console.log('✅ Joined meeting:', credentials.topic);

            // Step 3: Subscribe to in-meeting events
            subscribeToMeetingEvents();
          },
          error: (err) => {
            console.error('Join error:', err);
          }
        });
      },
      error: (err) => {
        console.error('Init error:', err);
      }
    });
  } catch (error) {
    console.error('Failed to join meeting:', error);
  }
}

// Step 3: Listen to Meeting SDK events
function subscribeToMeetingEvents() {
  // User join events
  ZoomMtg.inMeetingServiceListener('onUserJoin', (data) => {
    console.log('👋 User joined:', data);
    // data.userId, data.userName
    // Update UI: add participant to list
  });

  // User leave events
  ZoomMtg.inMeetingServiceListener('onUserLeave', (data) => {
    console.log('👋 User left:', data);
    // Update UI: remove participant from list
  });

  // Active speaker detection
  ZoomMtg.inMeetingServiceListener('onActiveSpeaker', (data) => {
    console.log('🎤 Active speaker:', data);
    // data: [{ userId, userName }]
    // Update UI: highlight speaker
  });

  // Meeting status changes
  ZoomMtg.inMeetingServiceListener('onMeetingStatus', (data) => {
    console.log('📊 Meeting status:', data);
    // status: 1=connecting, 2=connected, 3=disconnected, 4=reconnecting
  });

  // Chat messages
  ZoomMtg.inMeetingServiceListener('onReceiveChatMsg', (data) => {
    console.log('💬 Chat message:', data);
    // Display in custom UI
  });

  // Recording status
  ZoomMtg.inMeetingServiceListener('onRecordingChange', (data) => {
    console.log('🔴 Recording status:', data);
    // Show recording indicator
  });

  // User updates (audio/video state changes)
  ZoomMtg.inMeetingServiceListener('onUserUpdate', (data) => {
    console.log('🔄 User updated:', data);
    // Update UI: show muted/video off indicators
  });
}

// Usage
joinMeeting('123456789', 'John Doe');

┌────────────────────────────────────────────────────────────────┐
│ SETUP PHASE:                                                    │
│                                                                 │
│ 1. Configure webhook subscription for meeting.rtms_started     │
│ 2. Deploy bot infrastructure                                   │
└────────────────────────────────────────────────────────────────┘
                             │
                             ▼
┌────────────────────────────────────────────────────────────────┐
│ RUNTIME PHASE:                                                  │
│                                                                 │
│ Step 1: GET /meetings/{meetingId} (zoom-rest-api)              │
│         └── Get meeting details                                │
│                                                                 │
│ Step 2: Wait for meeting.rtms_started webhook                  │
│         └── Contains rtmsSessionID, meetingUUID                │
│                                                                 │
│ Step 3: Connect to RTMS WebSocket (rtms)                  │
│         └── wss://rtms.zoom.us/ws                              │
│         └── Subscribe to: audio, video, transcript, chat       │
│                                                                 │
│ Step 4: Receive real-time media + events                       │
│         └── Audio chunks, video frames, transcripts            │
│         └── Events: participant joined/left, speaking status   │
└────────────────────────────────────────────────────────────────┘

const axios = require('axios');
const WebSocket = require('ws');

// Step 1: Get meeting details
async function getMeetingDetails(meetingId) {
  const token = await getAccessToken();

  const response = await axios.get(
    `https://api.zoom.us/v2/meetings/${meetingId}`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return response.data;
}

// Step 2: Wait for meeting.rtms_started webhook
app.post('/webhooks/zoom', (req, res) => {
  const { event, payload } = req.body;

  if (event === 'meeting.rtms_started') {
    const { rtmsSessionID, meetingUUID } = payload.object;

    // Step 3: Connect to RTMS
    connectToRTMS(rtmsSessionID, meetingUUID);
  }

  res.status(200).send();
});

// Step 3: Connect to RTMS WebSocket
async function connectToRTMS(sessionID, meetingUUID) {
  const token = await getAccessToken();

  const ws = new WebSocket('wss://rtms.zoom.us/ws', {
    headers: {
      'Authorization': `Bearer ${token}`,
      'X-Zoom-Session-ID': sessionID
    }
  });

  ws.on('open', () => {
    // Subscribe to media types
    ws.send(JSON.stringify({
      type: 'subscribe',
      mediaTypes: ['audio', 'transcript', 'chat']
    }));
  });

  ws.on('message', (data) => {
    const message = JSON.parse(data);

    // Step 4: Handle real-time media and events
    switch (message.type) {
      case 'audio':
        processAudioChunk(message.data);
        break;

      case 'transcript':
        console.log(`📝 Transcript: ${message.data.text}`);
        break;

      case 'chat':
        console.log(`💬 Chat: ${message.data.message}`);
        break;

      case 'participant_joined':
        console.log(`👋 ${message.data.user_name} joined`);
        break;

      case 'participant_left':
        console.log(`👋 ${message.data.user_name} left`);
        break;
    }
  });
}

function processAudioChunk(audioData) {
  // Process raw audio for transcription, analysis, etc.
}

// Get meeting details
async function getMeetingDetails(meetingId) {
  const token = await getAccessToken();

  const response = await axios.get(
    `https://api.zoom.us/v2/meetings/${meetingId}`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return response.data;
}

// Poll for meeting participants report (after meeting ends)
async function getMeetingParticipantsReport(meetingId) {
  const token = await getAccessToken();

  // Get past meeting details
  const response = await axios.get(
    `https://api.zoom.us/v2/past_meetings/${meetingId}`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return response.data;
}

// Get detailed participant report
async function getParticipantsList(meetingId) {
  const token = await getAccessToken();

  const response = await axios.get(
    `https://api.zoom.us/v2/report/meetings/${meetingId}/participants`,
    { headers: { 'Authorization': `Bearer ${token}` } }
  );

  return response.data.participants;
}

// Usage: Retrieve meeting + get historical data
async function analyzeMeeting(meetingId) {
  // Get meeting metadata
  const meeting = await getMeetingDetails(meetingId);
  console.log(`Meeting: ${meeting.topic}`);

  // Wait for meeting to end, then get reports
  // (typically poll or wait for meeting.ended webhook)

  const participants = await getParticipantsList(meetingId);
  console.log(`Total participants: ${participants.length}`);

  participants.forEach(p => {
    console.log(`- ${p.name}: ${p.duration} minutes`);
  });
}