package lang

import (
	"os"
	"strings"
)

func GetLocale() string {
	if loc := os.Getenv("LC_MESSAGES"); loc != "" {
		return NormalizeLocale(loc)
	}

	if loc := os.Getenv("LANG"); loc != "" {
		return NormalizeLocale(loc)
	}

	return "C.UTF-8"
}

func NormalizeLocale(loc string) string {
	if idx := strings.Index(loc, "."); idx != -1 {
		return loc[:idx]
	}

	if idx := strings.Index(loc, "@"); idx != -1 {
		return loc[:idx]
	}

	return loc
}