//go:build darwin

package language

import (
	"os/exec"
	"strings"
)

func platformLocale() string {
	out, err := exec.Command("/usr/bin/defaults", "read", "-g", "AppleLocale").Output()
	if err == nil && strings.TrimSpace(string(out)) != "" {
		return strings.TrimSpace(string(out))
	}
	out, err = exec.Command("/usr/bin/defaults", "read", "-g", "AppleLanguages").Output()
	if err == nil {
		return firstAppleLanguage(string(out))
	}
	return ""
}

func firstAppleLanguage(raw string) string {
	raw = strings.TrimSpace(raw)
	raw = strings.TrimPrefix(raw, "(")
	raw = strings.TrimSuffix(raw, ")")
	for _, part := range strings.Split(raw, ",") {
		part = strings.TrimSpace(part)
		part = strings.Trim(part, "\"")
		if part != "" {
			return part
		}
	}
	return ""
}