osutil

var MachineID = sync.OnceValue(func() string {
	x, err := machineID(context.Background())
	if err == nil && x != "" {
		return x
	}
	logrus.WithError(err).Debug("failed to get machine ID, falling back to use hostname instead")
	hostname, err := os.Hostname()
	if err != nil {
		panic(fmt.Errorf("failed to get hostname: %w", err))
	}
	return hostname
})

var ProductVersion = sync.OnceValues(func() (*semver.Version, error) {
	cmd := exec.Command("sw_vers", "-productVersion")

	b, err := cmd.Output()
	if err != nil {
		return nil, fmt.Errorf("failed to execute %v: %w", cmd.Args, err)
	}
	verTrimmed := strings.TrimSpace(string(b))

	for strings.Count(verTrimmed, ".") < 2 {
		verTrimmed += ".0"
	}
	verSem, err := semver.NewVersion(verTrimmed)
	if err != nil {
		return nil, fmt.Errorf("failed to parse macOS version %q: %w", verTrimmed, err)
	}
	return verSem, nil
})