parse feed and run tldr on the feed item urls

feed-tldr.js

var FeedParser = require('feedparser'),
  request = require('request'),
  summary = require('node-tldr'),
  Promise = require('promise');

function summarize(link) {
  return new Promise(function(resolve, reject) {
    summary.summarize(link, function(result, failure) {
      if (failure) {
        console.log("An error occured! " + result.error);
        reject(result.error)
      }
      resolve(result)
    })
  })
}

main_promise = new Promise(function(resolve, reject) {
  var req = request('https://aws.amazon.com/blogs/aws/feed/'),
    feedparser = new FeedParser([]);

  req.on('error', function(error) {
    // handle any request errors
  });

  req.on('response', function(res) {
    var stream = this;

    if (res.statusCode != 200) return this.emit('error', new Error('Bad status code'));
    stream.pipe(feedparser);
  });

  var item_promises = []

  feedparser.on('error', function(error) {
    // always handle errors
    console.log(error)
  });

  feedparser.on('readable', function() {
      // This is where the action is!
      var stream = this,
        meta = this.meta // **NOTE** the "meta" is always available in the context of the feedparser instance
        ,
        item;

      while (item = stream.read()) {
        //console.log(item.title, item.link);
        item_promises.push(summarize(item.link));
      }
  })

  feedparser.on('end', function (err) {
    if (err) {
      console.log(err, err.stack);
      return process.exit(1);
    }

    Promise.all(item_promises)
      .then(function(res) {
        resolve(res)
      })
  });
});

main_promise.then(function(res) {
  //console.log('DONE', res)
  res.forEach(function (result) {
    console.log(result.title);
    console.log(result.words);
    console.log(result.compressFactor);
    console.log(result.summary.join("\n"));
    console.log("\n\n\n")
  })
})