refactor(sitemap): streamline sitemap generation by consolidating static and dynamic routes, improve error handling, and update XML response format

app/sitemap.xml/route.tsx

@@ -1,58 +1,26 @@
 import {NextResponse} from "next/server";
 
-interface SitemapRoute {
-    url: string;
-    lastModified: string;
-    changeFrequency?:
-        | "always"
-        | "hourly"
-        | "daily"
-        | "weekly"
-        | "monthly"
-        | "yearly"
-        | "never";
-    priority?: number;
-}
-
-const baseUrl = "https://dki.one";
-
 export async function GET() {
+    const baseUrl = process.env.NEXT_PUBLIC_BASE_URL || "http://localhost:3000"; // Stelle sicher, dass die Base-URL korrekt ist
+    const apiUrl = `${baseUrl}/api/sitemap`; // Verwende die vollständige URL zur API
+
     try {
-        const response = await fetch(`${baseUrl}/api/sitemap`);
-        if (!response.ok) {
-            console.error(`Failed to fetch dynamic routes: ${response.statusText}`);
+        // Holt die Sitemap-Daten von der API
+        const res = await fetch(apiUrl);
+
+        if (!res.ok) {
+            console.error(`Failed to fetch sitemap: ${res.statusText}`);
+            return new NextResponse("Failed to fetch sitemap", {status: 500});
         }
 
-        const dynamicRoutes = (await response.json()) as SitemapRoute[];
-        const sitemap = [...dynamicRoutes];
+        const xml = await res.text();
 
-        return new NextResponse(generateXml(sitemap), {
+        // Gibt die XML mit dem richtigen Content-Type zurück
+        return new NextResponse(xml, {
             headers: {"Content-Type": "application/xml"},
         });
     } catch (error) {
-        console.error("Error fetching dynamic routes, using fallback:", error);
-        return new NextResponse(generateXml([]), {
-            headers: {"Content-Type": "application/xml"},
-        });
+        console.error("Error fetching sitemap:", error);
+        return new NextResponse("Error fetching sitemap", {status: 500});
     }
 }
-
-function generateXml(routes: SitemapRoute[]): string {
-    const xmlHeader = '<?xml version="1.0" encoding="UTF-8"?>';
-    const urlsetOpen = '<urlset xmlns="https://www.sitemaps.org/schemas/sitemap/0.9">';
-    const urlsetClose = '</urlset>';
-
-    const urlEntries = routes
-        .map(
-            (route) => `
-    <url>
-      <loc>${route.url}</loc>
-      <lastmod>${route.lastModified}</lastmod>
-      ${route.changeFrequency ? `<changefreq>${route.changeFrequency}</changefreq>` : ""}
-      ${route.priority ? `<priority>${route.priority}</priority>` : ""}
-    </url>`
-        )
-        .join("");
-
-    return `${xmlHeader}${urlsetOpen}${urlEntries}${urlsetClose}`;
-}