Calendly

              
              curl https://api.calendly.com/users/me \
  -H "Authorization: Bearer YOUR_PERSONAL_ACCESS_TOKEN"

            

              
              https://api.calendly.com/organizations/xxxxxxxxxxxxxxxx

            

              
              curl -X POST https://api.calendly.com/webhook_subscriptions \
  -H "Authorization: Bearer YOUR_PERSONAL_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://your-server-address/webhooks/calendly",
    "events": [
      "invitee.created",
      "invitee.canceled"
    ],
    "organization": "https://api.calendly.com/organizations/your-org-id",
    "scope": "organization"
  }'

            

              
              npm install express

            

              
              // server.js
import express from 'express';

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

const ENGAGELAB_AUTH = Buffer.from(
  `${process.env.ENGAGELAB_DEV_KEY}:${process.env.ENGAGELAB_DEV_SECRET}`
).toString('base64');

async function sendSMS({ to, templateId, params }) {
  const res = await fetch('https://smsapi.engagelab.com/v1/messages', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Basic ${ENGAGELAB_AUTH}`,
    },
    body: JSON.stringify({
      to: [to],
      template: { id: templateId, params },
    }),
  });
  const data = await res.json();
  if (data.code && data.code !== 0) {
    console.error(`SMS sending failed: code=${data.code}, message=${data.message}`);
  } else {
    console.log(`SMS sent successfully: plan_id=${data.plan_id}, message_id=${data.message_id}`);
  }
}

function formatTime(isoString) {
  return new Date(isoString).toLocaleString('en-US', {
    timeZone: 'Asia/Shanghai', year: 'numeric', month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit',
  });
}

function scheduleReminders({ phone, name, startTime }) {
  const meetingTime = new Date(startTime).getTime();
  const now = Date.now();
  const reminders = [
    { advance: '24 hours', triggerAt: meetingTime - 24 * 60 * 60 * 1000 },
    { advance: '1 hour',   triggerAt: meetingTime -      60 * 60 * 1000 },
  ];
  for (const { advance, triggerAt } of reminders) {
    const delay = triggerAt - now;
    if (delay <= 0) continue;
    setTimeout(async () => {
      await sendSMS({ to: phone, templateId: process.env.TEMPLATE_ID_REMINDER, params: { name, time: formatTime(startTime), advance } });
    }, delay);
  }
}

app.post('/webhooks/calendly', async (req, res) => {
  const { event, payload } = req.body;
  const phone     = payload.text_reminder_number;
  const name      = payload.invitee?.name ?? 'User';
  const startTime = payload.scheduled_event?.start_time;
  if (!phone) { console.log('No phone number provided, skipping'); return res.sendStatus(200); }
  if (event === 'invitee.created') {
    await sendSMS({ to: phone, templateId: process.env.TEMPLATE_ID_CONFIRM, params: { name, time: formatTime(startTime) } });
    scheduleReminders({ phone, name, startTime });
  } else if (event === 'invitee.canceled') {
    await sendSMS({ to: phone, templateId: process.env.TEMPLATE_ID_CANCEL, params: { name } });
  }
  res.sendStatus(200);
});

app.listen(3000, () => console.log('Server running on port 3000'));

            

              
              ENGAGELAB_DEV_KEY=your_dev_key
ENGAGELAB_DEV_SECRET=your_dev_secret
TEMPLATE_ID_CONFIRM=appointment_confirmation_template_id
TEMPLATE_ID_CANCEL=cancellation_notice_template_id
TEMPLATE_ID_REMINDER=meeting_reminder_template_id

            

              
              const followUpAt = meetingTime + 30 * 60 * 1000;
const followUpDelay = followUpAt - now;
if (followUpDelay > 0) {
  setTimeout(async () => {
    await sendSMS({ to: phone, templateId: process.env.TEMPLATE_ID_FOLLOWUP, params: { name } });
  }, followUpDelay);
}

            

              
              if (event === 'invitee.created') {
  await sendSMS({ to: phone, templateId: process.env.TEMPLATE_ID_CONFIRM, params: { name, time: formatTime(startTime) } });
  await sendSMS({ to: process.env.HOST_PHONE, templateId: process.env.TEMPLATE_ID_HOST_NOTIFY, params: { name, time: formatTime(startTime) } });
}