main.js

// Initialize libraries for push notifications, geolocation, and camera access
const push = require('push-notification');
const geolocation = require('geolocation');
const camera = require('camera-access');

// Emergency button click event listener
document.getElementById('emergency-button').addEventListener('click', async () => {
  // Get user's current location
  const location = await geolocation.getCurrentPosition();
  // Get images from front and back cameras
  const [frontImage, backImage] = await Promise.all([
    camera.getImage('front'),
    camera.getImage('back')
  ]);
  // Record a 15 second voice clip
  const voiceClip = await camera.recordAudio(15);

  // Get emergency contacts from app's database
  const contacts = await getEmergencyContacts();

  // Send notifications to each contact
  for (const contact of contacts) {
    if (contact.registered) {
      push.sendPushNotification({
        to: contact.pushToken,
        title: 'Emergency Alert',
        body: 'Please check your app for more information',
        data: { location, frontImage, backImage, voiceClip }
      });
    } else {
      sendEmailOrText({
        to: contact.email || contact.phoneNumber,
        subject: 'Emergency Alert',
        message: 'Please check your email/text for more information',
        attachments: [frontImage, backImage, voiceClip]
      });
    }
  }
});

// Helper function to retrieve emergency contacts from the app's database
async function getEmergencyContacts() {
  const contacts = await fetch('/api/emergency-contacts');
  return contacts.json();
}

// Helper function to send email or text message with attachments
async function sendEmailOrText({ to, subject, message, attachments }) {
  // Code to send email or text message with attachments
}