public async Task <ContentDto> CreateContentAsync(int lectureId, ContentCreateRequestDto request)
{
var user = await GetCurrentUser();
if (user == null)
{
throw new NotFoundException("user not found");
}
var lecture = await _lectureRepository.GetLectureAsync(lectureId);
if (lecture == null)
{
throw new NotFoundException("lecture not found");
}
// TODO: currently support Video only
var content = lecture.AddContent(user, request.Title, request.Desctiption, request.VimeoId, request.DurationInSecond);
await _lectureRepository.SaveAsync();
return(Mapper.Map <ContentDto>(content));
}
public async Task <VimeoVidoeResponseDto> CreateVideoUploadTicketAsync(int lectureId, VidoeUploadTicketRequestDto request)
{
// 1. get user & lecture info
var user = await GetCurrentUser();
var lecture = await _lectureRepository.GetLectureAsync(lectureId);
if (lecture == null)
{
throw new NotFoundException("lecture not found");
}
// 2. verify the course state and course author
lecture.Section.Course.CourseUpdateValidate(user);
// 3. gernerate the vimeo upload ticket
var vimeoVideoTitle = lecture.Section.Course.Id + "-" + lecture.Section.Id.ToString() + "-" + lecture.Id.ToString();
var vidoeUploadResponse = await VimeoHelper.VideoUploadTicketCreatePostAsync(_vimeoConfig.Token, _vimeoConfig.UploadVideoTicketRequestUrl, request.FileSize, vimeoVideoTitle);
var vimeoVideoId = new Uri(vidoeUploadResponse.Uri).Segments.Last();
if (vimeoVideoId == null)
{
throw new VideoUpdateException("Cannot upload video because no vimeo video ID found, please contact our tech support.");
}
// 4. add the video into the course vimeo album
var vimeoAlbumId = lecture.Section.Course.VimeoAlbumId;
if (vimeoAlbumId == null)
{
throw new VideoUpdateException("Fail to add video into album because album ID not found, please contact our tech support.");
}
var addAlbumVideoUrl = string.Format(_vimeoConfig.AddAlbumVideoUrl, vimeoAlbumId, vimeoVideoId);
await VimeoHelper.AddVideoToAlbum(_vimeoConfig.Token, addAlbumVideoUrl);
// 5. add video metedata into database
var video = lecture.AddVideoContent(user, request.Title, request.Desctiption, vimeoVideoId, request.DurationInSecond);
await _lectureRepository.SaveAsync();
vidoeUploadResponse.VideoId = video.Id;
// 6 return the upload ticket
return(vidoeUploadResponse);
}
public async Task <LectureDto> GetLectureByIdAsync(int lectureId)
{
return(Mapper.Map <LectureDto>(await _lectureRepository.GetLectureAsync(lectureId)));
}