public IHttpActionResult CreateCourse(CourseCreator courseCreator)
{
coursesService = new CoursesService();
subjectsService = new SubjectsService();
teachersService = new TeachersService();
subjectToExposeService = new SubjectToExposeService();
courseToExposeService = new CourseToExposeService();
if (courseCreator == null)
{
return(BadRequest());
}
bool exists = false;
exists = coursesService.CheckIfCourseAlreadyExists(courseCreator.Title);
if (exists)
{
return(BadRequest());
}
List <CourseSubject> courseSubjects = coursesService.CreateCourse(courseCreator);
List <SubjectToExpose> subjectsToExpose = new List <SubjectToExpose>();
foreach (CourseSubject courseSubject in courseSubjects)
{
Subject subject = new Subject();
subject = subjectsService.Find(courseSubject.SubjectId);
if (subject == null)
{
return(BadRequest());
}
if (subject.ID == 0)
{
return(BadRequest());
}
Teacher teacher = new Teacher();
teacher = teachersService.GetTeacherNameByID(subject.TeacherId);
if (teacher == null)
{
return(BadRequest());
}
SubjectToExpose subjectToExpose = subjectToExposeService.TrimSubject(subject);
subjectsToExpose.Add(subjectToExpose);
}
CourseToExpose course = courseToExposeService
.TrimSubject(courseSubjects, courseCreator, subjectsToExpose);
return(Created(new Uri(Request.RequestUri + "/" + course.Id), course));
}
public SubjectToExpose TrimSubject(Subject subject)
{
SubjectToExpose subjectToExpose;
string teacherName;
Teacher teacher = db.Teachers.Find(subject.TeacherId);
if (teacher != null)
{
teacherName = teacher.Name;
}
else
{
return(null);
}
subjectToExpose = new SubjectToExpose()
{
ID = subject.ID,
Title = subject.Title,
Credits = subject.Credits,
TeacherId = subject.TeacherId,
TeacherName = teacherName
};
return(subjectToExpose);
}
public List <SubjectToExpose> TrimSubjects(List <Subject> subjects)
{
List <SubjectToExpose> subjectsToExpose = new List <SubjectToExpose>();
string teacherName;
foreach (Subject subject in subjects)
{
Teacher teacher = db.Teachers.Find(subject.TeacherId);
if (teacher != null)
{
teacherName = teacher.Name;
}
else
{
teacherName = null;
}
SubjectToExpose subjectToExpose = new SubjectToExpose()
{
ID = subject.ID,
Title = subject.Title,
Credits = subject.Credits,
TeacherId = subject.TeacherId,
TeacherName = teacherName
};
subjectsToExpose.Add(subjectToExpose);
}
return(subjectsToExpose);
}
// GET /api/subject/id
public IHttpActionResult GetSubject(int id)
{
subjectsService = new SubjectsService();
subjectToExposeService = new SubjectToExposeService();
if (id == 0)
{
return(NotFound());
}
Subject subject = subjectsService.GetSubjectById(id);
if (subject == null)
{
return(NotFound());
}
SubjectToExpose subjectToExpose = subjectToExposeService.TrimSubject(subject);
return(Ok(subjectToExpose));
}