/* eslint-disable no-console */

import { register } from 'register-service-worker'
import swEvents from './ServiceWorker/events'
import auth from './auth'

if (process.env.NODE_ENV === 'production') {
  register(`${process.env.BASE_URL}sw.js`, {
    ready () {
      console.log('App is being served from cache by a service worker.')
    },
    registered () {
      console.log('Service worker has been registered.')
    },
    cached () {
      console.log('Content has been cached for offline use.')
    },
    updatefound () {
      console.log('New content is downloading.')
    },
    updated (registration) {
      console.log('New content is available; please refresh.')
      // Send an event with the updated info
      document.dispatchEvent(
          new CustomEvent(swEvents.SW_UPDATED, { detail:registration })
      )
    },
    offline () {
      console.log('No internet connection found. App is running in offline mode.')
    },
    error (error) {
      console.error('Error during service worker registration:', error)
    }
  })
}

if(navigator && navigator.serviceWorker) {
  navigator.serviceWorker.addEventListener('message', event => {
    // for every message we expect an action field
    // determining operation that we should perform
    const { action } = event.data;
    // we use 2nd port provided by the message channel
    const port = event.ports[0];

    if(action === 'getBearerToken') {
      console.debug('Token request from sw');
      port.postMessage({
        authToken: auth.getToken(),
      })
    } else {
      console.error('Unknown event', event);
      port.postMessage({
        error: 'Unknown request',
      })
    }
  });
}