feat: Introduce metadata-only retrieval functions for posts, products, and pages to optimize sitemap generation.

app/sitemap.ts

@@ -1,8 +1,10 @@
 import { config } from '@/lib/config';
 import { MetadataRoute } from 'next';
-import { getAllProducts } from '@/lib/mdx';
-import { getAllPosts } from '@/lib/blog';
-import { getAllPages } from '@/lib/pages';
+import { getAllProductsMetadata } from '@/lib/mdx';
+import { getAllPostsMetadata } from '@/lib/blog';
+import { getAllPagesMetadata } from '@/lib/pages';
+
+export const revalidate = 3600; // Revalidate every hour
 
 export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
   const baseUrl = config.baseUrl || 'https://klz-cables.com';
@@ -34,11 +36,10 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
     }
 
     // Products
-    const products = await getAllProducts(locale);
-    for (const product of products) {
-      // We need to find the category for the product to build the URL
-      // In this project, products are under /products/[category]/[slug]
-      // The category is in product.frontmatter.categories
+    const productsMetadata = await getAllProductsMetadata(locale);
+    for (const product of productsMetadata) {
+      if (!product.frontmatter || !product.slug) continue;
+
       const category =
         product.frontmatter.categories[0]?.toLowerCase().replace(/\s+/g, '-') || 'other';
       sitemapEntries.push({
@@ -50,8 +51,10 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
     }
 
     // Blog posts
-    const posts = await getAllPosts(locale);
-    for (const post of posts) {
+    const postsMetadata = await getAllPostsMetadata(locale);
+    for (const post of postsMetadata) {
+      if (!post.frontmatter || !post.slug) continue;
+
       sitemapEntries.push({
         url: `${baseUrl}/${locale}/blog/${post.slug}`,
         lastModified: new Date(post.frontmatter.date),
@@ -61,8 +64,10 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
     }
 
     // Static pages
-    const pages = await getAllPages(locale);
-    for (const page of pages) {
+    const pagesMetadata = await getAllPagesMetadata(locale);
+    for (const page of pagesMetadata) {
+      if (!page.slug) continue;
+
       sitemapEntries.push({
         url: `${baseUrl}/${locale}/${page.slug}`,
         lastModified: new Date(),