locale.go

package main

import (
	"golang.org/x/text/language"
	locale "github.com/jacobmarshall/go-locale"
)

var supportedLocales = []language.Tag{
	language.English,
	language.German,
	language.French,
	language.Japanese,
	language.BrazilianPortuguese,
	language.Russian,
	language.SimplifiedChinese,
	// Hong Kong?
}

var supportedLocaleStrings = []string{
	"en",
	"de",
	"fr",
	"ja",
	"pt_br",
	"ru",
	"zh_ch",
	// "zh_hk",
}

var localeMatcher = language.NewMatcher(supportedLocales)

func GetDefaultLocale() string {
	locale, err := locale.DetectLocale()
	if err != nil {
		return "en"
	}
	_, index, _ := localeMatcher.Match(language.Make(locale))
	return supportedLocaleStrings[index]
}