Retrospring/app/javascript/retrospring/features/webpush/index.ts

import registerEvents from 'retrospring/utilities/registerEvents';
import { enableHandler } from './enable';
import { dismissHandler } from "./dismiss";
import { unsubscribeHandler, checkSubscription } from "retrospring/features/webpush/unsubscribe";

let subscriptionChecked = false;

export default (): void => {
  const swCapable = 'serviceWorker' in navigator;
  const notificationCapable = 'Notification' in window;

  if (swCapable && notificationCapable) {
    const enableBtn = document.querySelector('button[data-action="push-enable"]');

    navigator.serviceWorker.getRegistration().then(registration =>
      registration?.pushManager.getSubscription().then(subscription => {
        if (subscription) {
          document.querySelector('button[data-action="push-enable"]')?.classList.add('d-none');
          document.querySelector('[data-action="push-disable"]')?.classList.remove('d-none');

          if (!subscriptionChecked) {
            checkSubscription(subscription);
            subscriptionChecked = true;
          }
        } else {
          enableBtn?.classList.remove('d-none');

          if (localStorage.getItem('dismiss-push-settings-prompt') == null) {
            document.querySelector('.push-settings')?.classList.remove('d-none');
          }
        }
      }));
  }

  registerEvents([
    {type: 'click', target: '[data-action="push-enable"]', handler: enableHandler, global: true},
    {type: 'click', target: '[data-action="push-dismiss"]', handler: dismissHandler, global: true},
    {type: 'click', target: '[data-action="push-disable"]', handler: unsubscribeHandler, global: true},
    {
      type: 'click',
      target: '[data-action="push-remove-all"]',
      handler: unsubscribeHandler,
      global: true
    },
  ]);
}