Refactor SEO module to utilize a modular structure by re-exporting all SEO functions from a new index file. This change maintains backward compatibility while streamlining the codebase for future enhancements.

prerender/seo/sitemap.cjs

@@ -0,0 +1,117 @@
+const generateSitemapJsonLd = (allCategories = [], baseUrl, config) => {
+
+  const jsonLd = {
+    "@context": "https://schema.org/",
+    "@type": "WebPage",
+    name: "Sitemap",
+    url: `${baseUrl}/sitemap`,
+    description: `Sitemap - Übersicht aller Kategorien und Seiten auf ${config.siteName}`,
+    breadcrumb: {
+      "@type": "BreadcrumbList",
+      itemListElement: [
+        {
+          "@type": "ListItem",
+          position: 1,
+          name: "Home",
+          item: baseUrl,
+        },
+        {
+          "@type": "ListItem",
+          position: 2,
+          name: "Sitemap",
+          item: `${baseUrl}/sitemap`,
+        },
+      ],
+    },
+  };
+
+  // Add all categories as site navigation elements
+  if (allCategories && allCategories.length > 0) {
+    jsonLd.mainEntity = {
+      "@type": "SiteNavigationElement",
+      name: "Kategorien",
+      hasPart: allCategories.map((category) => ({
+        "@type": "SiteNavigationElement",
+        name: category.name,
+        url: `${baseUrl}/Kategorie/${category.seoName}`,
+        description: `${category.name} Kategorie`,
+      })),
+    };
+  }
+
+  return `<script type="application/ld+json">${JSON.stringify(
+    jsonLd
+  )}</script>`;
+};
+
+const generateXmlSitemap = (allCategories = [], allProducts = [], baseUrl) => {
+  const currentDate = new Date().toISOString().split("T")[0]; // YYYY-MM-DD format
+
+  let sitemap = `<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+`;
+
+  // Homepage
+  sitemap += `  <url>
+    <loc>${baseUrl}/</loc>
+    <lastmod>${currentDate}</lastmod>
+    <changefreq>daily</changefreq>
+    <priority>1.0</priority>
+  </url>
+`;
+
+  // Static pages
+  const staticPages = [
+    { path: "/datenschutz", changefreq: "monthly", priority: "0.3" },
+    { path: "/impressum", changefreq: "monthly", priority: "0.3" },
+    { path: "/batteriegesetzhinweise", changefreq: "monthly", priority: "0.3" },
+    { path: "/widerrufsrecht", changefreq: "monthly", priority: "0.3" },
+    { path: "/sitemap", changefreq: "weekly", priority: "0.5" },
+    { path: "/agb", changefreq: "monthly", priority: "0.3" },
+    { path: "/404", changefreq: "monthly", priority: "0.1" },
+    { path: "/Konfigurator", changefreq: "weekly", priority: "0.8" },
+  ];
+
+  staticPages.forEach((page) => {
+    sitemap += `  <url>
+    <loc>${baseUrl}${page.path}</loc>
+    <lastmod>${currentDate}</lastmod>
+    <changefreq>${page.changefreq}</changefreq>
+    <priority>${page.priority}</priority>
+  </url>
+`;
+  });
+
+  // Category pages
+  allCategories.forEach((category) => {
+    if (category.seoName) {
+      sitemap += `  <url>
+    <loc>${baseUrl}/Kategorie/${category.seoName}</loc>
+    <lastmod>${currentDate}</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.8</priority>
+  </url>
+`;
+    }
+  });
+
+  // Product pages
+  allProducts.forEach((productSeoName) => {
+    sitemap += `  <url>
+    <loc>${baseUrl}/Artikel/${productSeoName}</loc>
+    <lastmod>${currentDate}</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.6</priority>
+  </url>
+`;
+  });
+
+  sitemap += `</urlset>`;
+
+  return sitemap;
+};
+
+module.exports = {
+  generateSitemapJsonLd,
+  generateXmlSitemap,
+};