public void AddUserToCourse(string userId, int courseId)
{
CourseUsers courseUsers = new CourseUsers
{
CourseId = courseId,
AppUserId = userId,
CreatedAt = DateTime.Now,
UpdatedAt = DateTime.Now
};
context.CourseUsers.Add(courseUsers);
context.SaveChanges();
//add notification
NewNotification(userId, "UserJoinCourse", "Course", courseId);
}
public void DeleteUserFromCourse(string userId, int courseId)
{
CourseUsers dbEntry = context.CourseUsers
.FirstOrDefault(cu => cu.AppUserId == userId &&
cu.CourseId == courseId);
if (dbEntry != null)
{
Course course = context.Courses
.FirstOrDefault(c => c.CourseId == courseId);
foreach (Presentation p in course.Presentations)
{
Representation deleteRep = p.Representations
.FirstOrDefault(r => r.CreatedBy.Id == userId);
DeleteRepresentation(deleteRep.RepresentationId);
}
context.CourseUsers.Remove(dbEntry);
context.SaveChanges();
}
}