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(),

lib/blog.ts

@@ -41,11 +41,11 @@ export async function getPostBySlug(slug: string, locale: string): Promise<PostM
 export async function getAllPosts(locale: string): Promise<PostMdx[]> {
   const postsDir = path.join(process.cwd(), 'data', 'blog', locale);
   if (!fs.existsSync(postsDir)) return [];
-  
+
   const files = fs.readdirSync(postsDir);
   const posts = files
-    .filter(file => file.endsWith('.mdx'))
-    .map(file => {
+    .filter((file) => file.endsWith('.mdx'))
+    .map((file) => {
       const filePath = path.join(postsDir, file);
       const fileContent = fs.readFileSync(filePath, 'utf8');
       const { data, content } = matter(fileContent);
@@ -55,14 +55,42 @@ export async function getAllPosts(locale: string): Promise<PostMdx[]> {
         content,
       };
     })
-    .sort((a, b) => new Date(b.frontmatter.date).getTime() - new Date(a.frontmatter.date).getTime());
+    .sort(
+      (a, b) => new Date(b.frontmatter.date).getTime() - new Date(a.frontmatter.date).getTime(),
+    );
 
   return posts;
 }
 
-export async function getAdjacentPosts(slug: string, locale: string): Promise<{ prev: PostMdx | null; next: PostMdx | null }> {
+export async function getAllPostsMetadata(locale: string): Promise<Partial<PostMdx>[]> {
+  const postsDir = path.join(process.cwd(), 'data', 'blog', locale);
+  if (!fs.existsSync(postsDir)) return [];
+
+  const files = fs.readdirSync(postsDir);
+  return files
+    .filter((file) => file.endsWith('.mdx'))
+    .map((file) => {
+      const filePath = path.join(postsDir, file);
+      const fileContent = fs.readFileSync(filePath, 'utf8');
+      const { data } = matter(fileContent);
+      return {
+        slug: file.replace(/\.mdx$/, ''),
+        frontmatter: data as PostFrontmatter,
+      };
+    })
+    .sort(
+      (a, b) =>
+        new Date(b.frontmatter.date as string).getTime() -
+        new Date(a.frontmatter.date as string).getTime(),
+    );
+}
+
+export async function getAdjacentPosts(
+  slug: string,
+  locale: string,
+): Promise<{ prev: PostMdx | null; next: PostMdx | null }> {
   const posts = await getAllPosts(locale);
-  const currentIndex = posts.findIndex(post => post.slug === slug);
+  const currentIndex = posts.findIndex((post) => post.slug === slug);
 
   if (currentIndex === -1) {
     return { prev: null, next: null };

lib/mdx.ts

@@ -18,11 +18,61 @@ export interface ProductMdx {
   content: string;
 }
 
+export async function getProductMetadata(
+  slug: string,
+  locale: string,
+): Promise<Partial<ProductMdx> | null> {
+  // Map translated slug to file slug
+  const fileSlug = await mapSlugToFileSlug(slug, locale);
+  const productsDir = path.join(process.cwd(), 'data', 'products', locale);
+
+  // Try exact slug first
+  let filePath = path.join(productsDir, `${fileSlug}.mdx`);
+
+  if (!fs.existsSync(filePath)) {
+    // Try with -2 suffix (common in the dumped files)
+    filePath = path.join(productsDir, `${fileSlug}-2.mdx`);
+  }
+
+  if (!fs.existsSync(filePath)) {
+    // Fallback to English if locale is not 'en'
+    if (locale !== 'en') {
+      const enProductsDir = path.join(process.cwd(), 'data', 'products', 'en');
+      let enFilePath = path.join(enProductsDir, `${fileSlug}.mdx`);
+      if (!fs.existsSync(enFilePath)) {
+        enFilePath = path.join(enProductsDir, `${fileSlug}-2.mdx`);
+      }
+
+      if (fs.existsSync(enFilePath)) {
+        const fileContent = fs.readFileSync(enFilePath, 'utf8');
+        const { data } = matter(fileContent);
+        return {
+          slug: fileSlug,
+          frontmatter: {
+            ...data,
+            isFallback: true,
+          } as ProductFrontmatter & { isFallback?: boolean },
+        };
+      }
+    }
+  } else {
+    const fileContent = fs.readFileSync(filePath, 'utf8');
+    const { data } = matter(fileContent);
+
+    return {
+      slug: fileSlug,
+      frontmatter: data as ProductFrontmatter,
+    };
+  }
+
+  return null;
+}
+
 export async function getProductBySlug(slug: string, locale: string): Promise<ProductMdx | null> {
   // Map translated slug to file slug
   const fileSlug = await mapSlugToFileSlug(slug, locale);
   const productsDir = path.join(process.cwd(), 'data', 'products', locale);
-  
+
   // Try exact slug first
   let filePath = path.join(productsDir, `${fileSlug}.mdx`);
 
@@ -41,7 +91,7 @@ export async function getProductBySlug(slug: string, locale: string): Promise<Pr
       if (!fs.existsSync(enFilePath)) {
         enFilePath = path.join(enProductsDir, `${fileSlug}-2.mdx`);
       }
-      
+
       if (fs.existsSync(enFilePath)) {
         const fileContent = fs.readFileSync(enFilePath, 'utf8');
         const { data, content } = matter(fileContent);
@@ -49,7 +99,7 @@ export async function getProductBySlug(slug: string, locale: string): Promise<Pr
           slug: fileSlug,
           frontmatter: {
             ...data,
-            isFallback: true
+            isFallback: true,
           } as ProductFrontmatter & { isFallback?: boolean },
           content,
         };
@@ -67,7 +117,12 @@ export async function getProductBySlug(slug: string, locale: string): Promise<Pr
   }
 
   // Filter out products without images
-  if (product && (!product.frontmatter.images || product.frontmatter.images.length === 0 || !product.frontmatter.images[0])) {
+  if (
+    product &&
+    (!product.frontmatter.images ||
+      product.frontmatter.images.length === 0 ||
+      !product.frontmatter.images[0])
+  ) {
     return null;
   }
 
@@ -77,9 +132,9 @@ export async function getProductBySlug(slug: string, locale: string): Promise<Pr
 export async function getAllProductSlugs(locale: string): Promise<string[]> {
   const productsDir = path.join(process.cwd(), 'data', 'products', locale);
   if (!fs.existsSync(productsDir)) return [];
-  
+
   const files = fs.readdirSync(productsDir);
-  return files.filter(file => file.endsWith('.mdx')).map(file => file.replace(/\.mdx$/, ''));
+  return files.filter((file) => file.endsWith('.mdx')).map((file) => file.replace(/\.mdx$/, ''));
 }
 
 export async function getAllProducts(locale: string): Promise<ProductMdx[]> {
@@ -91,6 +146,19 @@ export async function getAllProducts(locale: string): Promise<ProductMdx[]> {
     allSlugs = Array.from(new Set([...slugs, ...enSlugs]));
   }
 
-  const products = await Promise.all(allSlugs.map(slug => getProductBySlug(slug, locale)));
+  const products = await Promise.all(allSlugs.map((slug) => getProductBySlug(slug, locale)));
   return products.filter((p): p is ProductMdx => p !== null);
 }
+
+export async function getAllProductsMetadata(locale: string): Promise<Partial<ProductMdx>[]> {
+  const slugs = await getAllProductSlugs(locale);
+  let allSlugs = slugs;
+
+  if (locale !== 'en') {
+    const enSlugs = await getAllProductSlugs('en');
+    allSlugs = Array.from(new Set([...slugs, ...enSlugs]));
+  }
+
+  const metadata = await Promise.all(allSlugs.map((slug) => getProductMetadata(slug, locale)));
+  return metadata.filter((m): m is Partial<ProductMdx> => m !== null);
+}

lib/pages.ts

@@ -39,23 +39,42 @@ export async function getPageBySlug(slug: string, locale: string): Promise<PageM
 export async function getAllPages(locale: string): Promise<PageMdx[]> {
   const pagesDir = path.join(process.cwd(), 'data', 'pages', locale);
   if (!fs.existsSync(pagesDir)) return [];
-  
+
   const files = fs.readdirSync(pagesDir);
   const pages = await Promise.all(
     files
-      .filter(file => file.endsWith('.mdx'))
-      .map(file => {
+      .filter((file) => file.endsWith('.mdx'))
+      .map((file) => {
         const fileSlug = file.replace(/\.mdx$/, '');
         const filePath = path.join(pagesDir, file);
-        const fileContent = { content: fs.readFileSync(filePath, 'utf8') };
-        const { data, content } = matter(fileContent.content);
+        const fileContent = fs.readFileSync(filePath, 'utf8');
+        const { data, content } = matter(fileContent);
         return {
           slug: fileSlug,
           frontmatter: data as PageFrontmatter,
           content,
         };
-      })
+      }),
   );
 
   return pages.filter((p): p is PageMdx => p !== null);
 }
+
+export async function getAllPagesMetadata(locale: string): Promise<Partial<PageMdx>[]> {
+  const pagesDir = path.join(process.cwd(), 'data', 'pages', locale);
+  if (!fs.existsSync(pagesDir)) return [];
+
+  const files = fs.readdirSync(pagesDir);
+  return files
+    .filter((file) => file.endsWith('.mdx'))
+    .map((file) => {
+      const fileSlug = file.replace(/\.mdx$/, '');
+      const filePath = path.join(pagesDir, file);
+      const fileContent = fs.readFileSync(filePath, 'utf8');
+      const { data } = matter(fileContent);
+      return {
+        slug: fileSlug,
+        frontmatter: data as PageFrontmatter,
+      };
+    });
+}