Show me a cat Webtask!

show-me-a-cat.js

'use latest';

import parser from 'rss-parser';

module.exports = function(context, req, res) {
  // we could probably easily allow the user to supply their subreddit of choice
  // but kitties are wholesome, so lets leave it at that
  parser.parseURL('https://www.reddit.com/r/cats/.rss', function(err, parsed) {
    // the messages aren't helpful, IMHO but at least you'll know if it breaks
    if(err) { res.writeHead(500, {}); res.end(err.message); return; }
    
    // sloppily pick a random entry
    const entry = parsed.feed.entries[Math.floor(Math.random() * parsed.feed.entries.length)];
    
    res.writeHead(302, { 'Location': entry.link});
    res.end(`Hold on! Sending you to: ${entry.link}`);
  });
};

The code's rather short, but in case it isn't clear:

We're getting the feed from the /r/cats subreddit, picking a random one and sending the user there. We now have a link that shows you random curated cat photos.