folder support

src/app/api/posts/route.ts

@@ -13,19 +13,14 @@ function getFileCreationDate(filePath: string): Date {
   return stats.birthtime;
 }
 
-async function getPostBySlug(slug: string) {
-  const realSlug = slug.replace(/\.md$/, '');
-  const fullPath = path.join(postsDirectory, `${realSlug}.md`);
-  const fileContents = fs.readFileSync(fullPath, 'utf8');
+async function getPostByPath(filePath: string, relPath: string) {
+  const fileContents = fs.readFileSync(filePath, 'utf8');
   const { data, content } = matter(fileContents);
-  const createdAt = getFileCreationDate(fullPath);
-
-  const processedContent = await remark()
-    .use(html)
-    .process(content);
-
+  const createdAt = getFileCreationDate(filePath);
+  const processedContent = await remark().use(html).process(content);
   return {
-    slug: realSlug,
+    type: 'post',
+    slug: relPath.replace(/\.md$/, ''),
     title: data.title,
     date: data.date,
     tags: data.tags || [],
@@ -35,27 +30,31 @@ async function getPostBySlug(slug: string) {
   };
 }
 
-async function getAllPosts() {
-  const fileNames = fs.readdirSync(postsDirectory);
-  const allPostsData = await Promise.all(
-    fileNames
-      .filter((fileName) => fileName.endsWith('.md'))
-      .map(async (fileName) => {
-        const slug = fileName.replace(/\.md$/, '');
-        return getPostBySlug(slug);
-      })
-  );
-
-  return allPostsData.sort((a, b) => 
-    new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime()
-  );
+async function readPostsDir(dir: string, relDir = ''): Promise<any[]> {
+  const entries = fs.readdirSync(dir, { withFileTypes: true });
+  const folders: any[] = [];
+  const posts: any[] = [];
+  for (const entry of entries) {
+    const fullPath = path.join(dir, entry.name);
+    const relPath = relDir ? path.join(relDir, entry.name) : entry.name;
+    if (entry.isDirectory()) {
+      const children = await readPostsDir(fullPath, relPath);
+      folders.push({ type: 'folder', name: entry.name, path: relPath, children });
+    } else if (entry.isFile() && entry.name.endsWith('.md')) {
+      posts.push(await getPostByPath(fullPath, relPath));
+    }
+  }
+  // Sort posts by creation date (newest first)
+  posts.sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());
+  // Folders first, then posts
+  return [...folders, ...posts];
 }
 
 export async function GET() {
   try {
-    const posts = await getAllPosts();
-    return NextResponse.json(posts);
+    const tree = await readPostsDir(postsDirectory);
+    return NextResponse.json(tree);
   } catch (error) {
-    return NextResponse.json({ error: 'Failed to fetch posts' }, { status: 500 });
+    return NextResponse.json({ error: 'Fehler beim Laden der Beiträge' }, { status: 500 });
   }
 }