passport.use(new LocalStrategy({
  usernameField: 'email',
  passwordField: 'password'
},
  function(username, password, cb) {
     UserSchema.findByUsername(username, function(err, user) {
      if (err) { return cb(err); }
      if (!user) { return cb(null, false); }
      if (user.password != password) { return cb(null, false); }
      return cb(null, user);
    });
  }));

router.post('/login',
  passport.authenticate('local', {
    failureRedirect: '/login' }),
  function(req, res) {
    res.redirect('/');
  });

const UserSchema = mongoose.Schema ({
  firstName: {
    type: String,
    index: true
  },
  lastName: {
    type: String,
    index: true
  },
  email: {
    type: String,
    index: true
  },
  password: {
    type: String,
    index: true
  },
  homeAirport: {
    type: String,
    index: true
  }
})

UserSchema.plugin(passportLocalMongoose)

// Adding this function to find by username
exports.findByUsername = function(username, cb) {
  process.nextTick(function() {
    for (var i = 0, len = records.length; i < len; i++) {
      var record = records[i];
      if (record.username === username) {
        return cb(null, record);
      }
    }
    return cb(null, null);
  });
}

// Export it to the app
module.exports = mongoose.model('user', UserSchema)