public IList <UserInfoViewModel> GetTeachersCouldBeRemoved(string callerId, int courseId)
{
var editingCourse =
_context.Courses.Include(c => c.Teachers)
.FirstOrDefault(c => c.Id == courseId);
if (editingCourse == null)
{
throw new NotFoundException();
}
return(editingCourse.Teachers
.Where(teacher => KaCakeUtils.isAppointer(editingCourse, callerId, teacher))
.Select(teacher => new UserInfoViewModel
{
FullName = _context.Users.Find(teacher.TeacherId).FullName,
UserName = _context.Users.Find(teacher.TeacherId).UserName,
UserId = teacher.TeacherId
})
.ToList());
}
public CourseViewModel Edit(string callerId, int courseId, CreateViewModel course)
{
Course editingCourse;
if ((editingCourse =
_context.Courses
.Include(c => c.Teachers)
.Include(c => c.Students)
.FirstOrDefault(c => c.Id == courseId)) != null)
{
// The course could be edited only by a teacher of that course
if (editingCourse.Teachers.Any(teacher => teacher.TeacherId == callerId))
{
editingCourse.Name = course.Name;
editingCourse.Description = course.Description;
if (course.TeachersToAdd != null)
{
course.TeachersToAdd.Select(
teacherId => new CourseTeacher2
{
CourseId = course.Id.GetValueOrDefault(),
TeacherId = teacherId,
AppointerId = callerId
}
).ToList().ForEach(teacher => editingCourse.Teachers.Add(teacher));
}
if (course.TeachersToRemove != null)
{
var teachersToRemove = course.TeachersToRemove
.Where(userId => editingCourse.Teachers.Any(teacher => teacher.TeacherId.Equals(userId)))
.Select(teacherId => editingCourse.Teachers.First(teacher => teacher.TeacherId.Equals(teacherId)));
foreach (var teacherToRemove in teachersToRemove)
{
// Only appointer can remove teachers appointed by him
if (KaCakeUtils.isAppointer(editingCourse, callerId, teacherToRemove))
{
editingCourse.Teachers.Remove(teacherToRemove);
}
else
{
throw new IllegalAccessException();
}
}
}
if (course.StudentsToAdd != null)
{
foreach (var student in course.StudentsToAdd)
{
editingCourse.Students.Add(new CourseEnrollment
{
CourseId = editingCourse.Id,
UserId = student
});
}
}
if (course.StudentsToRemove != null)
{
var studentsToRemove = course.StudentsToRemove
.Where(userId => editingCourse.Students.Any(student => student.UserId == userId))
.Select(studentId => editingCourse.Students.First(student => student.UserId == studentId));
foreach (var student in studentsToRemove)
{
editingCourse.Students.Remove(student);
}
}
_context.SaveChanges();
return(GetCourse(callerId, courseId));
}
else
{
throw new IllegalAccessException();
}
}
else
{
throw new NotFoundException();
}
}