type Options struct {
	// Directory defines the directory where log files will be written to.
	// If the directory does not exist, it will be created.
	Directory string

	// MaximumFileSize defines the maximum size of each log file in bytes.
	MaximumFileSize int64

	// FileNameFunc specifies the name a new file will take.
	// FileNameFunc must ensure collisions in filenames do not occur.

			return fmt.Sprintf("%s-%s.log", ctx.String("log-prefix"), fmt.Sprintf("%X", time.Now().UTC().UnixNano()))
		}
	}

	output, err := logger.NewDir(logger.Options{
		Directory:       lgDirAbs,
		MaximumFileSize: int64(lgSize),
		Compress:        ctx.Bool("log-compress"),
		FileNameFunc:    fileNameFunc,
	})
	if err != nil {
		return nil, err
	}
	logger.EnableJSON()
	return output, nil
}