1

internal/handlers/post_text.go

@@ -23,6 +23,19 @@ type postLocalePayload struct {
 	Text string `json:"text"`
 }
 
+// requestLangCode is the normalized locale from ?lang= or Accept-Language (zh, en, ja, …).
+func requestLangCode(r *http.Request) string {
+	raw := strings.TrimSpace(r.URL.Query().Get("lang"))
+	if raw == "" {
+		raw = r.Header.Get("Accept-Language")
+	}
+	raw = strings.TrimSpace(strings.Split(raw, ",")[0])
+	if raw == "" {
+		return "zh"
+	}
+	return translateNormalizePostLang(raw)
+}
+
 func (t postTextI18n) pick(r *http.Request) string {
 	return pickLangField(r, t.TextZh, t.TextEn, t.TextJa, t.TextKo, t.TextVi, t.TextId, t.TextMs)
 }