// Example: Send welcome message on user signup
app.post('/webhook/signup', async (req, res) => {
  const { user } = req.body;
  
  await sendTemplateMessage({
    to: user.phone,
    template: 'welcome_message',
    variables: {
      name: user.name,
      company: 'Acme Inc'
    }
  });
});

// Example: Send appointment reminder
const schedule = require('node-schedule');

schedule.scheduleJob('0 9 * * *', async () => {
  const appointments = await getTodaysAppointments();
  
  for (const appointment of appointments) {
    await sendTemplateMessage({
      to: appointment.patient.phone,
      template: 'appointment_reminder',
      variables: {
        name: appointment.patient.name,
        time: appointment.time,
        doctor: appointment.doctor.name
      }
    });
  }
});