public IActionResult AddVideos(List <LectureVideo> videos)
{
if (videos == null || videos.Count == 0)
{
return(BadRequest());
}
foreach (var video in videos)
{
video.UniqueCode = Guid.NewGuid().ToString();
}
var lecture = _lectureService.GetLecture(videos[0].LectureId);
_lectureService.RemoveAllVideos(lecture.Id);
_lectureService.AddVideos(videos);
return(PartialView("../Course/CoursePartial/_LectureVideo", videos));
}