Function initialize

app/initializers/prerequisites.js:9–83

(application)

import Analytics from '../services/analytics';

export function initialize(application) {
  function checkWebRTCSupport() {
    return new Promise((resolve, reject) => {
      // window.util is a part of PeerJS library
      if (window.util.supports.sctp) {
        resolve();
      } else {
        // eslint-disable-next-line prefer-promise-reject-errors
        reject('browser-unsupported');
      }
    });
  }

  function clearFileSystem() {
    return new Promise((resolve, reject) => {
      // TODO: change File into a service and require it here
      FileSystem.removeAll()
        .then(() => {
          resolve();
        })
        .catch(() => {
          // eslint-disable-next-line prefer-promise-reject-errors
          reject('filesystem-unavailable');
        });
    });
  }

  function authenticateToFirebase() {
    return new Promise((resolve, reject) => {
      const xhr = $.getJSON('/auth');
      xhr.then((data) => {
        const ref = new window.Firebase(config.FIREBASE_URL);
        // eslint-disable-next-line no-param-reassign
        application.ref = ref;
        // eslint-disable-next-line no-param-reassign
        application.userId = data.id;
        // eslint-disable-next-line no-param-reassign
        application.publicIp = data.public_ip;

        ref.authWithCustomToken(data.token, (error) => {
          if (error) {
            reject(error);
          } else {
            resolve();
          }
        });
      });
    });
  }

  // TODO: move it to a separate initializer
  function trackSizeOfReceivedFiles() {
    $.subscribe('file_received.p2p', (event, data) => {
      Analytics.trackEvent('received', {
        event_category: 'file',
        event_label: 'size',
        value: Math.round(data.info.size / 1000),
      });