Refactor for i18n, CMS integration, and project slugs; enhance admin & analytics

Co-authored-by: dennis <dennis@konkol.net>

app/components/Header.tsx

@@ -5,11 +5,19 @@ import { motion, AnimatePresence } from "framer-motion";
 import { Menu, X, Mail } from "lucide-react";
 import { SiGithub, SiLinkedin } from "react-icons/si";
 import Link from "next/link";
+import { useLocale, useTranslations } from "next-intl";
+import { usePathname, useRouter } from "next/navigation";
 
 const Header = () => {
   const [isOpen, setIsOpen] = useState(false);
   const [scrolled, setScrolled] = useState(false);
   const [mounted, setMounted] = useState(false);
+  const locale = useLocale();
+  const pathname = usePathname();
+  const router = useRouter();
+  const t = useTranslations("nav");
+
+  const isHome = pathname === `/${locale}` || pathname === `/${locale}/`;
 
   useEffect(() => {
     // Use requestAnimationFrame to ensure smooth transition
@@ -28,10 +36,10 @@ const Header = () => {
   }, []);
 
   const navItems = [
-    { name: "Home", href: "/" },
-    { name: "About", href: "#about" },
-    { name: "Projects", href: "#projects" },
-    { name: "Contact", href: "#contact" },
+    { name: t("home"), href: `/${locale}` },
+    { name: t("about"), href: isHome ? "#about" : `/${locale}#about` },
+    { name: t("projects"), href: isHome ? "#projects" : `/${locale}/projects` },
+    { name: t("contact"), href: isHome ? "#contact" : `/${locale}#contact` },
   ];
 
   const socialLinks = [
@@ -44,6 +52,17 @@ const Header = () => {
     { icon: Mail, href: "mailto:contact@dk0.dev", label: "Email" },
   ];
 
+  const switchLocale = (nextLocale: string) => {
+    try {
+      const pathWithoutLocale = pathname.replace(new RegExp(`^/${locale}`), "") || "";
+      const hash = typeof window !== "undefined" ? window.location.hash : "";
+      router.push(`/${nextLocale}${pathWithoutLocale}${hash}`);
+      document.cookie = `NEXT_LOCALE=${nextLocale}; path=/`;
+    } catch {
+      // ignore
+    }
+  };
+
   // Always render to prevent flash, but use opacity transition
 
   return (
@@ -79,7 +98,7 @@ const Header = () => {
               className="flex items-center space-x-2"
             >
               <Link
-                href="/"
+                href={`/${locale}`}
                 className="text-2xl font-black font-sans text-stone-900 tracking-tighter liquid-hover flex items-center"
               >
                 dk<span className="text-red-500">0</span>
@@ -126,6 +145,32 @@ const Header = () => {
             </nav>
 
             <div className="hidden md:flex items-center space-x-3">
+              <div className="flex items-center bg-white/40 border border-white/50 rounded-full overflow-hidden shadow-sm">
+                <button
+                  type="button"
+                  onClick={() => switchLocale("en")}
+                  className={`px-3 py-1.5 text-xs font-semibold transition-colors ${
+                    locale === "en"
+                      ? "bg-stone-900 text-stone-50"
+                      : "text-stone-700 hover:bg-white/60"
+                  }`}
+                  aria-label="Switch language to English"
+                >
+                  EN
+                </button>
+                <button
+                  type="button"
+                  onClick={() => switchLocale("de")}
+                  className={`px-3 py-1.5 text-xs font-semibold transition-colors ${
+                    locale === "de"
+                      ? "bg-stone-900 text-stone-50"
+                      : "text-stone-700 hover:bg-white/60"
+                  }`}
+                  aria-label="Sprache auf Deutsch umstellen"
+                >
+                  DE
+                </button>
+              </div>
               {socialLinks.map((social) => (
                 <motion.a
                   key={social.label}
@@ -145,6 +190,7 @@ const Header = () => {
               whileTap={{ scale: 0.95 }}
               onClick={() => setIsOpen(!isOpen)}
               className="md:hidden p-2 rounded-full bg-white/40 hover:bg-white/60 text-stone-800 transition-colors liquid-hover"
+              aria-label={isOpen ? "Close menu" : "Open menu"}
             >
               {isOpen ? <X size={24} /> : <Menu size={24} />}
             </motion.button>