feat: setup database-driven admin user management

lib/metadata.ts

@@ -0,0 +1,24 @@
+import type { Metadata } from "next";
+
+const BASE_URL = "https://kitebeachakyaka.com.tr";
+
+export function buildMeta(
+  lang: string,
+  path: string,
+  tr: { title: string; description: string },
+  en: { title: string; description: string }
+): Metadata {
+  const isEn = lang === "en";
+  return {
+    title: isEn ? en.title : tr.title,
+    description: isEn ? en.description : tr.description,
+    alternates: {
+      canonical: `${BASE_URL}/${lang}${path}`,
+      languages: {
+        "x-default": `${BASE_URL}/tr${path}`,
+        tr: `${BASE_URL}/tr${path}`,
+        en: `${BASE_URL}/en${path}`,
+      },
+    },
+  };
+}