passport.callback = function()

in api/services/passport.js [222:252]

• 24 lines of code
• 11 McCabe index (conditional complexity)

passport.callback = function (req, res, next) {
  var provider = req.param('provider', 'local')
    , action   = req.param('action');

  // Passport.js wasn't really built for local user registration, but it's nice
  // having it tied into everything else.
  if (provider === 'local' && action !== undefined) {
    if (action === 'register' && !req.user) {
      this.protocols.local.register(req, res, next);
    }
    else if (action === 'connect' && req.user) {
      this.protocols.local.connect(req, res, next);
    }
    else if (action === 'disconnect' && req.user) {
      this.disconnect(req, res, next);
    }
    else {
      next(new Error('Invalid action'));
    }
  } else {
    if (action === 'disconnect' && req.user) {
      this.disconnect(req, res, next) ;
    } else {
      // The provider will redirect the user to this URL after approval. Finish
      // the authentication process by attempting to obtain an access token. If
      // access was granted, the user will be logged in. Otherwise, authentication
      // has failed.
      this.authenticate(provider, next)(req, res, req.next);
    }
  }
};