public async Task <Document> SaveDocumentAsync(Stream fileStream, string fileName, long fileSize)
{
var id = Guid.NewGuid().ToString();
var fileLocation = await _contentStorage.SaveFile(fileStream, id + Path.GetExtension(fileName));
var documentsCount = _documentsRepository.GetDocumentsCount();
var document = new Document
{
Id = id,
Name = fileName,
FileSize = fileSize,
Location = fileLocation,
Position = documentsCount + 1
};
return(await _documentsRepository.AddDocumentAsync(document));
}