Fix: correct <html lang> and localize the <head> description per locale

The root (main)/layout renders <html> ABOVE the [locale] segment, so next-intl's getLocale() returns the default locale there - emitting <html lang="en"> on every page regardless of UI language (e.g. /de) and a hardcoded English <head> description. Both are strong "translate this page" triggers in Chrome. proxy.ts already exposes the nonce to server components via the x-middleware-request-* mechanism; expose the request pathname the same way as x-pathname, and have the root layout derive the locale from it (falling back to getLocale() when the path has no locale segment) for both <html lang> and the localized meta_description (new key in all 17 locales; the English value is unchanged).
2026-05-30 13:51:21 +02:00
parent 7341e47a1b
commit 241544cd08
19 changed files with 47 additions and 7 deletions
@@ -1,13 +1,26 @@
 import type { Metadata, Viewport } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import { headers } from "next/headers";
-import { getLocale } from "next-intl/server";
+import { getLocale, getTranslations } from "next-intl/server";
 import { PWAInstallPrompt } from "@/components/pwa-install-prompt";
 import { ServiceWorkerRegistration } from "@/components/service-worker-registration";
 import { configManager } from "@/lib/admin/config-manager";
 import { withBasePath } from "@/lib/browser-navigation";
+import { locales } from "@/i18n/routing";
 import "../globals.css";

+// This layout renders <html> and sits ABOVE the [locale] segment, so
+// next-intl's getLocale() returns the default locale here - emitting
+// <html lang="en"> on e.g. /de pages, which makes browsers offer to
+// "translate this page". Recover the active locale from the request pathname
+// (exposed by proxy.ts as x-pathname), falling back to getLocale() (cookie /
+// Accept-Language) when the path carries no locale segment.
+async function resolveRequestLocale(): Promise<string> {
+  const pathname = (await headers()).get("x-pathname") || "";
+  const seg = pathname.split("/").find((s) => (locales as readonly string[]).includes(s));
+  return seg ?? (await getLocale());
+}
+
 const geistSans = Geist({
  variable: "--font-geist-sans",
  subsets: ["latin"],
@@ -27,10 +40,16 @@ export const viewport: Viewport = {
 export async function generateMetadata(): Promise<Metadata> {
  await configManager.ensureLoaded();
  const faviconUrl = configManager.get<string>("faviconUrl", "/branding/Bulwark_Favicon.svg");
+  // Localize the <head> description to match the UI language; a hardcoded
+  // English description is another signal that makes Chrome offer to
+  // "translate this page". Resolve the locale from the request path, since this
+  // layout is above the [locale] segment (see resolveRequestLocale).
+  const locale = await resolveRequestLocale();
+  const t = await getTranslations({ locale });

  return {
    title: process.env.APP_NAME || process.env.NEXT_PUBLIC_APP_NAME || "Webmail",
-    description: "Minimalist webmail client using JMAP protocol",
+    description: t("meta_description"),
    appleWebApp: {
      capable: true,
      statusBarStyle: "black-translucent",
@@ -48,7 +67,7 @@ export default async function RootLayout({
 }: {
  children: React.ReactNode;
 }) {
-  const locale = await getLocale();
+  const locale = await resolveRequestLocale();
  const nonce = (await headers()).get("x-nonce") ?? "";
  const parentOrigin = process.env.NEXT_PUBLIC_PARENT_ORIGIN || "";

@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimalistický webmailový klient využívající protokol JMAP",
  "login": {
    "title": "Webmail",
    "username_label": "E-mail",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimalistisk webmail-klient, der bruger JMAP-protokollen",
  "login": {
    "title": "Webmail",
    "username_label": "Email",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimalistischer Webmail-Client mit JMAP-Protokoll",
  "login": {
    "title": "Webmail",
    "username_label": "E-Mail",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimalist webmail client using JMAP protocol",
  "login": {
    "title": "Webmail",
    "username_label": "Email",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Cliente de correo web minimalista que usa el protocolo JMAP",
  "login": {
    "title": "Correo Web",
    "username_label": "Correo electrónico",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Client de messagerie web minimaliste utilisant le protocole JMAP",
  "login": {
    "title": "Webmail",
    "username_label": "Email",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Client di posta web minimalista che utilizza il protocollo JMAP",
  "login": {
    "title": "Webmail",
    "username_label": "Email",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "JMAPプロトコルを使用するミニマルなウェブメールクライアント",
  "login": {
    "title": "ウェブメール",
    "username_label": "メールアドレス",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "JMAP 프로토콜을 사용하는 미니멀한 웹메일 클라이언트",
  "login": {
    "title": "웹메일",
    "username_label": "이메일",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimālistisks tīmekļa pasta klients, kas izmanto JMAP protokolu",
  "login": {
    "title": "Tīmekļa pasts",
    "username_label": "E-pasta adrese",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimalistische webmailclient die het JMAP-protocol gebruikt",
  "login": {
    "title": "Webmail",
    "username_label": "E-mail",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Minimalistyczny klient poczty internetowej wykorzystujący protokół JMAP",
  "login": {
    "title": "Webmail",
    "username_label": "E-mail",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Cliente de webmail minimalista que usa o protocolo JMAP",
  "login": {
    "title": "Webmail",
    "username_label": "E-mail",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Минималистичный веб-клиент электронной почты, использующий протокол JMAP",
  "login": {
    "title": "Веб-почта",
    "username_label": "Электронная почта",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "JMAP protokolünü kullanan minimalist web posta istemcisi",
  "login": {
    "title": "Webmail",
    "username_label": "E-posta",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "Мінімалістичний вебклієнт електронної пошти, що використовує протокол JMAP",
  "login": {
    "title": "Веб-пошта",
    "username_label": "Електронна пошта",
@@ -1,4 +1,5 @@
 {
+  "meta_description": "使用 JMAP 协议的极简网页邮件客户端",
  "login": {
    "title": "网页邮箱",
    "username_label": "邮箱地址",
@@ -143,11 +143,15 @@ export async function proxy(request: NextRequest) {
  const response = intlResponse ?? NextResponse.next();

  const existing = response.headers.get("x-middleware-override-headers");
-  response.headers.set(
-    "x-middleware-override-headers",
-    existing ? `${existing},x-nonce` : "x-nonce"
-  );
+  // Expose the nonce AND the request pathname to server components as request
+  // headers. The root (main)/layout renders <html> ABOVE the [locale] segment,
+  // so getLocale() can't resolve the active locale there and falls back to the
+  // default - emitting <html lang="en"> on e.g. /de pages, which makes browsers
+  // offer to "translate this page". The layout reads x-pathname to recover it.
+  const overrides = [existing, "x-nonce", "x-pathname"].filter(Boolean).join(",");
+  response.headers.set("x-middleware-override-headers", overrides);
  response.headers.set("x-middleware-request-x-nonce", nonce);
+  response.headers.set("x-middleware-request-x-pathname", pathname);

  response.headers.set("X-Content-Type-Options", "nosniff");