public string CourseBackground(string courseId)
{
var course = _courseService.GetCourse(courseId);
if (course == null)
{
return("");
}
return(string.IsNullOrEmpty(course.Background) ? "~/Images/DefaultImages/DefaultCourseBackground.jpg" : $"~/Files/CourseBackgrounds/{course.Background}");
}
public void AddNewLecture(string courseId, bool intro)
{
var course = _courseService.GetCourse(courseId);
var lectures = _courseService.GetCourseLectures(courseId);
var lastLecture = lectures.OrderByDescending(x => x.Date).Where(x => !x.Introduction).ToList()[1];
var lastIntroLecture = lectures.OrderBy(x => x.Number).Where(x => x.Introduction).Take(1).SingleOrDefault();
if (lastLecture == null || course == null)
{
return;
}
var lectureNumber = lastLecture.Number + 2;
if (intro)
{
if (lastIntroLecture == null)
{
lectureNumber = 0;
}
else
{
lectureNumber = lastIntroLecture.Number - 1;
}
}
var newLecture = new Lecture()
{
Course = course, Day = lastLecture.Day, Date = lastLecture.Date.AddDays(7), From = lastLecture.From, To = lastLecture.To,
Number = lectureNumber, Introduction = intro
};
if (intro)
{
newLecture.Title = "intro";
}
_context.Add(newLecture);
_context.SaveChanges();
}
public bool IsCourseTeacher(ClaimsPrincipal user, string courseId)
{
return(user != null && _courseService.GetCourse(courseId).TeacherId == GetUserId(user));
} //ToDo :: I don't know if the teacher Id is already included