public List <GeneralSelectionItem> GetAllSubjectsAsSelectionItem()
{
var subjects = _subjectRepository.FindAll();
List <GeneralSelectionItem> subjectDTOs = new List <GeneralSelectionItem>();
subjects.ToList().ForEach(x => subjectDTOs.Add(MapSubject.MapSubjectToGeneralSelectionItem(x)));
return(subjectDTOs);
}
public SubjectDTO GetSubjectById(string subjectId)
{
var subject = _subjectRepository.GetSubjectById(subjectId);
if (subject == null)
{
throw new ParameterException("Subject with given id does not exists.");
}
return(MapSubject.MapSubjectToSubjectDTO(subject));
}
public IEnumerable <GeneralSelectionItem> GetSubjectUserHasPassedAsSubjectDTO(string userId)
{
if (userId == null)
{
throw new ParameterException("Requested userId cannot be null");
}
var subjects = _subjectRepository.GetSubjectsStudentHasPassed(userId);
var selectionItems = subjects.Select(x => MapSubject.MapSubjectToGeneralSelectionItem(x));
return(selectionItems);
}
public void CreateSubject(SubjectDTO subjectDTO)
{
if (subjectDTO == null)
{
throw new ParameterException("subject object cannot be null");
}
if (subjectDTO.SubjectID != null)
{
throw new ParameterException("subjectID cannot have initial value");
}
var sub = MapSubject.MapSubjectDTOToSubject(subjectDTO);
_subjectRepository.Create(sub);
}
public SubjectDTO UpdateSubject(SubjectDTO subject)
{
if (subject == null)
{
throw new ParameterException("Subject to be updated cannot be null");
}
else if (subject.SubjectID == null || String.IsNullOrEmpty(subject.SubjectCode))
{
throw new ParameterException("SubjectID, SubjectCode cannot be null or empty");
}
var subjectDBModel = MapSubject.MapSubjectDTOToSubject(subject);
Subject updated = _subjectRepository.UpdateSubject(subjectDBModel);
return(MapSubject.MapSubjectToSubjectDTO(updated));
}
public StudentDTO GetStudentDetails(string userID)
{
if (userID == null || !Guid.TryParse(userID, out Guid userguid))
throw new ParameterException("user ID is invalid");
var currentStudent = _studentRepository.FindStudentByUserID(userID);
if (currentStudent == null)
throw new AuthenticationException("Requested student does not exists");
StudentDTO studentDTO = MapStudent.MapStudentDBModelToStudentDTO(currentStudent);
var subjectsTutoring = _subjectRepository.GetSubjectsStudentIsTutoring(userID);
if (subjectsTutoring != null)
{
var subjectDtos = subjectsTutoring.Select(x => MapSubject.MapSubjectToGeneralSelectionItem(x));
studentDTO.TutoringSubjects = subjectDtos;
}
return studentDTO;
}
public IEnumerable <SubjectListItemDTO> GetAllSubjectAsSubjectListItem()
{
return(_subjectRepository.FindAll().Select(x => MapSubject.MapSubjectToSubjectListItemDTO(x)));
}
