exports.register = function()

in api/services/protocols/local.js [26:84]
49 lines of code
10 McCabe index (conditional complexity)

exports.register = function (req, res, next) {
  var email    = req.param('email')
    , username = req.param('username')
    , password = req.param('password');

  if (!email) {
    req.flash('error', 'Error.Passport.Email.Missing');
    return next(new Error('No email was entered.'));
  }

  if (!username) {
    req.flash('error', 'Error.Passport.Username.Missing');
    return next(new Error('No username was entered.'));
  }

  if (!password) {
    req.flash('error', 'Error.Passport.Password.Missing');
    return next(new Error('No password was entered.'));
  }

  User.create({
    username : username
  , email    : email
  }, function (err, user) {
    if (err) {
      if (err.code === 'E_VALIDATION') {
        if (err.invalidAttributes.email) {
          req.flash('error', 'Error.Passport.Email.Exists');
        } else {
          req.flash('error', 'Error.Passport.User.Exists');
        }
      }

      return next(err);
    }

    // Generating accessToken for API authentication
    var token = crypto.randomBytes(48).toString('base64');

    Passport.create({
      protocol    : 'local'
    , password    : password
    , user        : user.id
    , accessToken : token
    }, function (err, passport) {
      if (err) {
        if (err.code === 'E_VALIDATION') {
          req.flash('error', 'Error.Passport.Password.Invalid');
        }

        return user.destroy(function (destroyErr) {
          next(destroyErr || err);
        });
      }

      next(null, user);
    });
  });
};