wip

lib/blog.ts

@@ -56,3 +56,20 @@ export async function getAllPosts(locale: string): Promise<PostMdx[]> {
 
   return posts;
 }
+
+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);
+
+  if (currentIndex === -1) {
+    return { prev: null, next: null };
+  }
+
+  // Posts are sorted by date descending (newest first)
+  // So "next" post (newer) is at index - 1
+  // And "previous" post (older) is at index + 1
+  const next = currentIndex > 0 ? posts[currentIndex - 1] : null;
+  const prev = currentIndex < posts.length - 1 ? posts[currentIndex + 1] : null;
+
+  return { prev, next };
+}