public async Task <string> AddInstructorAudioMedia(string instructorId, string firstName, string lastName, string title, int durationInMinutes, DateTime recordingDate, DateTime uploadDate, byte[] streamedFileContent)
{
// TODO: calculate this some way automatically... someday
string fileExtension = "m4a";
// Generate Container Name - InstructorSpecific
string containerName = $"{firstName[0].ToString().ToLower()}{lastName.ToLower()}-{instructorId}";
// TODO: calculate this some way automatically... someday
string contentType = "audio/mp4";
// TODO: calculate this some way automatically... someday
FileType fileType = FileType.audio;
string authorName = $"{firstName} {lastName}";
string authorShortName = $"{firstName[0]}{lastName}";
string description = $"{authorShortName} - {title}";
// TODO: Get this from FFMPEG... someday
long duration = (durationInMinutes * 60000);
// Generate new filename
string fileName = $"{firstName[0].ToString().ToLower()}{lastName.ToLower()}-{Guid.NewGuid()}";
// TODO: Move this to a BlobCreatedResponse object
BlobCreatedEvent blobCreatedResult;
try
{
// Update file properties in storage
Dictionary <string, string> fileProperties = new Dictionary <string, string>();
fileProperties.Add("ContentType", contentType);
// update file metadata in storage
Dictionary <string, string> metadata = new Dictionary <string, string>();
metadata.Add("author", authorShortName);
metadata.Add("tite", title);
metadata.Add("description", description);
metadata.Add("duration", duration.ToString());
metadata.Add("recordingDate", recordingDate.ToString());
metadata.Add("uploadDate", uploadDate.ToString());
var fileNameWExt = $"{fileName}.{fileExtension}";
blobCreatedResult = await _cloudStorageService.CreateBlob(containerName, fileNameWExt, streamedFileContent, "audio", fileProperties, metadata);
}
catch (StorageException e)
{
throw e;
}
Model.Media media = Model.Media.Create(string.Empty, instructorId, authorName, fileName, fileType, fileExtension, recordingDate, uploadDate, ContentDetails.Create(title, description, duration, blobCreatedResult.Size, 0, new List <string>()), StateDetails.Create(StatusType.STAGED, DateTime.MinValue, DateTime.UtcNow, DateTime.MaxValue), Manifest.Create(new Dictionary <string, string>()));
// upload to MongoDB
if (!blobCreatedResult.Error)
{
var mapper = new Mapper(_mapperConfiguration);
var dao = mapper.Map <ContentDAO>(media);
try
{
await _db.Content.InsertOneAsync(dao);
}
catch (Exception)
{
return(string.Empty);
}
return(dao.Id.ToString());
}
else
{
// metadata wasn't stored, remove blob
await _cloudStorageService.DeleteBlob(containerName, fileName, "audio");
throw new AddMediaException($"An issue occurred during media upload: rolling back storage change");
}
}