🏗️ microservice fabric splitting

common/i18n/i18n.go

@@ -0,0 +1,48 @@
+package i18n
+
+import (
+	"context"
+
+	i18n2 "github.com/nicksnyder/go-i18n/v2/i18n"
+	"golang.org/x/text/language"
+)
+
+func FormatText(ctx context.Context, msgId string) string {
+	return FormatTextWithData(ctx, msgId)
+}
+
+func FormatTextWithData(ctx context.Context, msgId string) string {
+	hasI18n := IsHasI18n(ctx)
+	if !hasI18n {
+		return ""
+	}
+	localizer, ok := getLocalizer(ctx)
+	if !ok {
+		return ""
+	}
+	localizeConfig := &i18n2.LocalizeConfig{
+		MessageID: msgId,
+	}
+	localize := localizer.MustLocalize(localizeConfig)
+	return localize
+}
+
+func FetchCurrentLanguageFromCtx(ctx context.Context) (*language.Tag, bool) {
+	v := ctx.Value(I18nCurrentLangKey)
+	if l, b := v.(language.Tag); b {
+		return &l, true
+	}
+	return nil, false
+}
+
+func LocalizedString(ctx context.Context, defaultValue string, langMap map[language.Tag]string) string {
+	langTag, tagExists := FetchCurrentLanguageFromCtx(ctx)
+	if !tagExists {
+		return defaultValue
+	}
+	str, ok := langMap[*langTag]
+	if !ok {
+		return defaultValue
+	}
+	return str
+}