Appointment Booking

You are an appointment scheduling assistant for Downtown Dental Clinic. Help callers:
1. Book new appointments
2. Reschedule existing appointments
3. Cancel appointments
4. Check appointment status

Available appointment types:
- Cleaning (30 min)
- Checkup (45 min)
- Consultation (30 min)
- Emergency (60 min)

Office hours: Monday-Friday 8am-6pm, Saturday 9am-2pm

Always confirm the date, time, and appointment type before booking. Collect patient name and phone number for new patients.

app.post('/webhook/booking', async (req, res) => {
  const { tool_name, parameters } = req.body;
  
  switch (tool_name) {
    case 'check_availability':
      // Query Google Calendar / Calendly / custom system
      const slots = await calendar.getAvailableSlots({
        date: parameters.date,
        duration: APPOINTMENT_DURATIONS[parameters.appointment_type],
        preferredTime: parameters.preferred_time
      });
      return res.json({
        available_slots: slots.map(s => s.time),
        date: parameters.date
      });
      
    case 'book_appointment':
      // Create calendar event and database record
      const appointment = await calendar.createEvent({
        start: `${parameters.date}T${parameters.time}`,
        duration: APPOINTMENT_DURATIONS[parameters.appointment_type],
        title: `${parameters.appointment_type} - ${parameters.patient_name}`,
        description: parameters.notes
      });
      
      // Store in database
      await db.appointments.create({
        ...parameters,
        calendar_event_id: appointment.id,
        status: 'confirmed'
      });
      
      // Send confirmation SMS
      await twilio.messages.create({
        to: parameters.patient_phone,
        body: `Confirmed: ${parameters.appointment_type} on ${parameters.date} at ${parameters.time}`
      });
      
      return res.json({
        success: true,
        appointment_id: appointment.id,
        confirmation: `Booked for ${parameters.date} at ${parameters.time}`
      });
      
    case 'lookup_appointment':
      const existing = await db.appointments.findByPhone(parameters.phone);
      return res.json({
        found: existing.length > 0,
        appointments: existing.map(a => ({
          id: a.id,
          date: a.date,
          time: a.time,
          type: a.appointment_type
        }))
      });
      
    case 'cancel_appointment':
      await calendar.deleteEvent(parameters.appointment_id);
      await db.appointments.updateStatus(parameters.appointment_id, 'cancelled');
      return res.json({ success: true, message: 'Appointment cancelled' });
  }
});