gmail gapps script rss feed reader

rss2gmail.js

function fetchAndEmailRSSFeeds() {
  const rssUrls = [
    "https://brandur.org/atoms.atom",
    "https://sirupsen.com/atom.xml",
    "https://ferd.ca/feed.rss",
    "https://andrewkelley.me/rss.xml",
    "https://apenwarr.ca/log/rss.php",
    "https://www.evanjones.ca/index.rss",
    "https://danluu.com/atom.xml",
    "https://thume.ca/atom.xml",
    "https://www.scattered-thoughts.net/atom.xml",
    "https://jvns.ca/atom.xml",
    "https://mitchellh.com/feed.xml",
    "https://davidgomes.com/rss/",
    "https://bcantrill.dtrace.org/feed/",
  ];
  const properties = PropertiesService.getUserProperties();
  const now = new Date();
  const oneDayAgo = new Date(now.getTime() - (24 * 60 * 60 * 1000));

  rssUrls.forEach(url => {
    const response = UrlFetchApp.fetch(url);
    const document = XmlService.parse(response.getContentText());
    const root = document.getRootElement();
    const ns = XmlService.getNamespace('http://www.w3.org/2005/Atom');
    const isAtom = root.getName() === 'feed';
    const entries = isAtom ? root.getChildren('entry', ns) : root.getChild('channel').getChildren('item');

    entries.forEach(entry => {
      const title = entry.getChildText('title', ns) ? entry.getChildText('title', ns) : entry.getChildText('title');
      const link = entry.getChild('link', ns) ? entry.getChild('link', ns).getAttribute('href').getValue() : entry.getChildText('link');
      const pubDateText = entry.getChildText('pubDate') || entry.getChildText('published', ns) || entry.getChildText('updated', ns);
      const pubDate = pubDateText ? new Date(pubDateText) : new Date();
      const id = entry.getChildText('guid') || entry.getChildText('id', ns) || link;
      const uniqueId = `${url}-${id}`;

      if (pubDate > oneDayAgo && !properties.getProperty(uniqueId)) {
        const subject = `[${url}] New Entry: ${title}`;
        const content = entry.getChildText('description') || entry.getChildText('content', ns) || '';
        const htmlBody = `
          <h1>${title}</h1>
          <p>${content}</p>
          <a href="${link}">Read more</a>
        `;
        // Logger.log({
        //   to: Session.getActiveUser().getEmail(),
        //   subject: subject,
        //   htmlBody: htmlBody
        // })

        MailApp.sendEmail({
          to: Session.getActiveUser().getEmail(),
          subject: subject,
          htmlBody: htmlBody
        });

        properties.setProperty(uniqueId, new Date().toISOString());
      }
    });
  });
}