TwitterPromisesController.js

'use strict'

const Config = use('Config')
var twitterAPI = require('node-twitter-api')
const promisify = require("es6-promisify")


const twitter = new twitterAPI({
          consumerKey: Config.get('auth.twitterAuth.consumerKey'),
          consumerSecret: Config.get('auth.twitterAuth.consumerSecret'),
          callback: Config.get('auth.twitterAuth.callbackURL')
      });

class TwitterController {

  * connect (request, response) {

    const getToken = promisify( twitter.getRequestToken.bind( twitter ), {multiArgs: true} )
    const sessionPut = promisify( request.session.put.bind( request.session ) );

    return getToken().then(function (result) {
      return {
          'requestToken' : result[0],
          'requestTokenSecret' : result[1]
        }
    })
    .then( function( tokens ) {
      return sessionPut( tokens ).then( () => tokens ); //request.session.put(tokens)
    })
    .then( function( tokens ) {
      console.log( tokens )
      return response.send( 'https://twitter.com/oauth/authenticate?oauth_token=' + tokens.requestToken )
    })
    .catch( function(e) {
      console.log(e)
    });


  }

  * callback (request, response) {

      const requestToken =  yield request.session.get('requestToken')
      const requestTokenSecret =  yield request.session.get('requestTokenSecret')
      const oauth_verifier = request.param('oauth_verifier')

      console.log('requestToken : ' + requestToken)

      twitter.getAccessToken(requestToken, requestTokenSecret, oauth_verifier, function(error, accessToken, accessTokenSecret, results) {
          if (error) {
              console.log(error);
          } else {
            console.log(results)
              //store accessToken and accessTokenSecret somewhere (associated to the user)
              //Step 4: Verify Credentials belongs here
          }
          return
      });
  }

}

module.exports = TwitterController