Fix dynamic default locale routing

app/[locale]/(site)/contact/actions.ts

@@ -5,7 +5,7 @@ import { isRedirectError } from "next/dist/client/components/redirect-error";
 import { z } from "zod";
 
 import { enforceContactRateLimit, verifyTurnstileToken } from "@/lib/contact-guard";
-import { getContactProtectionSettings } from "@/lib/app-config";
+import { getContactProtectionSettings, getSiteSettings } from "@/lib/app-config";
 import { getLocalizedPath, resolveLocale } from "@/lib/locale";
 import { sendContactMessage } from "@/lib/mail";
 
@@ -60,7 +60,8 @@ function getStringValue(formData: FormData, key: string) {
 
 export async function submitContactFormAction(formData: FormData) {
   const locale = resolveLocale(String(formData.get("locale") ?? ""));
-  const contactPath = getLocalizedPath(locale, "/contact");
+  const siteSettings = await getSiteSettings();
+  const contactPath = getLocalizedPath(locale, "/contact", siteSettings.defaultLocale);
 
   try {
     const protectionSettings = await getContactProtectionSettings();
@@ -86,7 +87,13 @@ export async function submitContactFormAction(formData: FormData) {
       message: values.message,
     });
 
-    redirect(withMessage(getLocalizedPath(locale, "/success"), "success", contactSuccessMessages[locale]));
+    redirect(
+      withMessage(
+        getLocalizedPath(locale, "/success", siteSettings.defaultLocale),
+        "success",
+        contactSuccessMessages[locale],
+      ),
+    );
   } catch (error) {
     if (isRedirectError(error)) {
       throw error;

app/[locale]/(site)/contact/page.tsx

@@ -7,7 +7,7 @@ import { PageHero } from "@/components/layout/page-hero";
 import { MotionFade } from "@/components/motion-fade";
 import { ContactForm } from "@/components/site/contact-form";
 import { buildLocalizedMetadata } from "@/lib/metadata";
-import { getPublicContactProtectionSettings } from "@/lib/app-config";
+import { getPublicContactProtectionSettings, getSiteSettings } from "@/lib/app-config";
 import { getLocalizedPath, resolveLocale } from "@/lib/locale";
 import { AppCard } from "@/components/ui/app-card";
 import { CardContent, CardHeader, CardTitle } from "@/components/ui/card";
@@ -36,9 +36,10 @@ export async function generateMetadata({ params }: ContactPageProps): Promise<Me
 export default async function ContactPage({ params }: ContactPageProps) {
   const { locale } = await params;
   const localeKey = resolveLocale(locale);
-  const [t, protection] = await Promise.all([
+  const [t, protection, siteSettings] = await Promise.all([
     getTranslations({ locale: localeKey, namespace: "contactPage" }),
     getPublicContactProtectionSettings(),
+    getSiteSettings(),
   ]);
 
   return (
@@ -82,7 +83,7 @@ export default async function ContactPage({ params }: ContactPageProps) {
             <ContactForm
               action={submitContactFormAction}
               locale={localeKey}
-              previewHref={getLocalizedPath(localeKey, "/success")}
+              previewHref={getLocalizedPath(localeKey, "/success", siteSettings.defaultLocale)}
               protection={protection}
               copy={{
                 name: t("name"),