public async Task <FileDto> Upload(IFormFile file, int userId)
{
var user = await _userRepository.GetOneByIdAsync(userId);
if (user == null)
{
throw new UserNotFoundException("User not found!");
}
var fileExtension = _fileWriter.GetFileExtension(file);
var fileNameOnServer = await _fileWriter.SaveFileOnServer(file, userId);
var fileEntity = new File();
fileEntity.FileName = _fileWriter.GetFileNameWithoutExtension(file);
fileEntity.FileNameOnServer = fileNameOnServer;
fileEntity.Extension = fileExtension;
fileEntity.FileSize = file.Length;
fileEntity.user = user;
var result = await _fileRepository.CreateAsync(fileEntity);
await _fileRepository.SaveAsync();
var fileDto = _mapper.Map <File, FileDto>(result);
return(fileDto);
}