digitransit-ui/app/util/metaUtils.js

import { generateManifestUrl } from './manifestUtils';

/**
 * This helper function generates a manifest and some social media meta tags
 * based on the given parameters.
 *
 * @param {{ title: string, description: string}} props The title and description to apply to the meta data.
 * @param {*} config The configuration for the software installation.
 * @param {{ pathname: string }} location The current location.
 */
export const generateMetaData = (
  { title, description },
  config,
  { pathname } = {},
) => ({
  title,
  meta: [
    {
      name: 'description',
      content: description,
    },
    {
      property: 'og:title',
      content: title,
    },
    {
      property: 'og:description',
      content: description,
    },
    {
      property: 'twitter:title',
      content: title,
    },
    {
      property: 'twitter:description',
      content: description,
    },
  ],
  ...(config && {
    link: [
      {
        rel: 'manifest',
        href: generateManifestUrl(
          config,
          {
            host: window.location.host,
            pathname: pathname || window.location.pathname,
            protocol: window.location.protocol,
          },
          {
            title,
            description,
          },
        ),
      },
    ],
  }),
});

export default generateMetaData;