import { Strategy as TwitterStrategy } from 'passport-twitter-2';
passport.use(new TwitterStrategy({
    clientID: TWITTER_CLIENT_ID,
    appKey: TWITTER_CLIENT_SECRET,
    callbackURL: "http://localhost:3000/auth/twitter/callback"
  },
  function(accessToken, profile, done) {
    User.findOrCreate({ twitter: profile.id }, function (err, user) {
      return done(err, user);
    });
  }
));

app.get('/auth/twitter',
  passport.authenticate('twitter'));

app.get('/auth/twitter/callback',
  passport.authenticate('twitter', { failureRedirect: '/login' }),
  function(req, res) {
    // Successful authentication, redirect home.
    res.redirect('/');
  });