package hostname

import (
	"bytes"
	"fmt"
	"os/exec"
)

// scutil --get HostName
// scutil --get LocalHostName
// scutil --get ComputerName
// scutil --set HostName my-mac.example.com

func osGetHostname() (string, error) {
	return scutil([]string{"-get", "HostName"})
}

// getDomainName executes the 'domainname' command and returns its output.
func scutil(args []string) (string, error) {
	cmd := exec.Command("scutil", args)
	var out bytes.Buffer
	cmd.Stdout = &out
	if err := cmd.Run(); err != nil {
		return "", fmt.Errorf("failed to execute 'scutil': %w", err)
	}
	domain := out.String()
	return domain, nil
}