Feature-driven

demo-feature-driven.js

// Feature definitions:

var features = {
      'incoming email': [

        when('email with link arrives', function() {
          doThese([
            action('extract article from link'),
            action('send article as HTML attachment to Kindle')
          ]);
        }),

        when('email with no link arrives', function() {
          doThese([
            action('send email as HTML attachment to Kindle')
          ]);
        })

      ]
    };

// ...

// Incoming Express route that includes the details of a new email

router.post('/document/new', function (req, res, next) {
  var emailBody = req.body['body-plain'];

  var matches = /https?[\w:/.-]+/.exec(emailBody);
  if (matches) {
    vent.emit('email with link arrives',
              {link: matches[0]});
  }
  else {
    vent.emit('email with no link arrives',
              {emailBody: req.body['body-html']});
  }

  res.send('thank you');
});

// ...

// Action definitions:

var actions = {
      'extract article from link': function() {
        var link = stash.pop('link');
        var deferred = Q.defer();

        request(link, function (err, res, body) {
          if (!err) {
            var article = articleExtractor.extractArticle(body);
            stash.put('article', article);
            deferred.resolve();
          }
          else {
            deferred.reject();
          }
        });

        return deferred.promise;
      },

      'send article as HTML attachment to Kindle': function() {
        console.log('Time to send the article! (see below)');
        console.log(stash.pop('article'));
        
        // Init the library/service responsible for sending things
        // to someone's Kindle
        
        // ...
        
        // Tell the library/service to send the article
        
        // ...
      },

      'send email as HTML attachment to Kindle': function() {
        console.log('Time to send the email! (see below)');
        console.log(stash.pop('emailBody'));
        
        // Init the library/service responsible for sending things
        // to someone's Kindle
        
        // ...
        
        // Tell the library/service to send the email contents
        
        // ...
      }
    };