electron.extra.navigate.js

'use strict';

const noop = console.log.bind(console);
const {dialog, shell} = require('electron');
const open = shell ? shell.openExternal : noop;
const showMessage = dialog ? dialog.showMessageBox : noop;
const url = require('url');

const publicDomains = ['www.pippo.com'];
const authDomains = ['flatlogic.github.ios'];

// https://nodejs.org/api/url.html
const sso = {
  protocol: 'https:',
  hostname: 'www.googlex.com',
  port: '8080',
  pathname: 'endpoint',
  query: { foo: 'bar' },
  hash: ''
};

const isPublic = domain => publicDomains.indexOf(domain) > -1;
const isAuth = domain => authDomains.indexOf(domain) > -1;

const extractDomain = url => url.split('/')[url.indexOf('://') > -1 ? 2 : 0].split(':')[0];

function handleRedirect(e, toUrl) {
  console.log('PreNavigate', toUrl);
  e.preventDefault();

  let domain = extractDomain(toUrl);
  if (isPublic(domain)) {
    // Eventual Manipulation...
  } else if (isAuth(domain)) {
    // Eventual Manipulation...
    sso.query.returnDomain = domain;
    sso.query.returnUrl = '' + toUrl;
    toUrl = url.format(sso);
  } else {
    console.warn('Invalid Domain: ' + domain);
    // throw RangeError('Invalid Domain: ' + domain);
    // https://github.com/electron/electron/blob/master/docs/api/dialog.md
    const message = {
      type: 'error',
      buttons: [],
      // defaultId: 0,
      title: 'Invalid Domain',
      message: `You are not allowed to navigate to: ${domain}`,
      detail: ['The domain of the following address is not whitelisted:', toUrl].join('\n')
    };
    return showMessage(message/*, (response) => console.log(response)*/);
  }

  console.log('Navigate', toUrl);
  open(toUrl);
}

module.exports = handleRedirect;