public async Task <IOutput> Handle(ChangePhotoInput request, CancellationToken cancellationToken)
        {
            var user = await _context.Users
                       .FirstOrDefaultAsync(x => x.Id == request.UserId, cancellationToken : cancellationToken);

            if (user is null)
            {
                return(ActionOutput.Error("Пользователь не найден"));
            }

            using var unit = _context.CreateUnitOfWork();

            try
            {
                var oldFile = await _context.AppFiles
                              .FirstOrDefaultAsync(x => x.Id == user.UserPhotoId, cancellationToken : cancellationToken);

                user.UserPhoto = null;

                var deleteResult = await _fileUploader.DeleteFile(oldFile.Path);
            }
            catch (Exception e) {}

            var fileSaveResult = await _fileUploader.SaveFile(request.NewPhoto);

            if (fileSaveResult.Succeeded == false)
            {
                return(ActionOutput.Error("Что-то пошло не так"));
            }
            var filePath        = fileSaveResult.Data.OperatedFilePath;
            var filePathRelated = fileSaveResult.Data.OperatedFileRelatedPath;
            var fileEntity      = new AppFile(request.NewPhoto.FileName, filePath, filePathRelated)
            {
                UserId = user.Id
            };
            var items = await _context.AppFiles.Where(x => x.UserId == user.Id).ToListAsync(cancellationToken);

            _context.AppFiles.RemoveRange(items);

            await _context.SaveChangesAsync(cancellationToken);

            await _context.AppFiles.AddAsync(fileEntity, cancellationToken);

            user.Photo = filePathRelated;

            await _context.SaveChangesAsync(cancellationToken);

            await unit.Apply();

            return(ActionOutput.SuccessData(user.Photo));
        }