Function for fetching metadata from backend.

FetchMetaData.js

const fetchMetaData = (url, callback) => {
  downloadContent(url, (isOk, result, headers) => {
    if (!isOk) {
      console.log('Error fetching meta data:', result);

      callback(false);
    } else {
      const metaData = JSON.parse(result);
      let metaTags = '';

      if (metaData) {
        if (metaData.title) {
          metaTags += '<title>' + metaData.title + '</title>';
          metaTags += '<meta property=\"og:title\" content=\"' + metaData.title + '\" />';
        }

        if (metaData.description) {
          metaTags += '<meta name=\"description\" content=\"' + metaData.description + '\" />';
          metaTags += '<meta property=\"og:description\" content=\"' + metaData.description + '\" />';
        }

        if (metaData.images) {
          for (let i = 0; i < metaData.images.length; i++) {
            const image = metaData.images[i];

            metaTags += '<meta property=\"og:image\" content=\"' + image + '\" />';
          }
        }
      }

      metaTags += '<meta property=\"og:url\" content=\"https://' + domainName + originalUri + '\" />';
      metaTags += '<meta property=\"og:type\" content=\"website\" />';

      callback(true, metaTags, headers);
    }
  });
};