class ElaasticController {

  SpringSecurityService springSecurityService
    private final static teacherName = 'demo-elaastic-teacher'
    private final static learnerName = 'demo-elaastic-learner'

    def index() { println("index")}

    def assignment (String id, String username) {
      User demoUser = User.findByUsername(username);
      String userRole = null;
      if (!demoUser || !(demoUser.firstName == teacherName || demoUser.firstName == learnerName)) {
        render(status: 401, text:'401 - Unauthorized')
      }
      Assignment assignment = Assignment.findById(Long.parseLong(id))
      if (!assignment) {
        render(status: 404, text:'404 - Not found - Assignment id is invalid')
      }

      // for demo user credential is username and password == username
      springSecurityService.reauthenticate(demoUser.username, username)

      render(view: "show_assignment", model: [assignmentInstance: assignment, user: springSecurityService.currentUser])
    }
}