Enhance Admin page with post editing functionality; implement PUT API for saving post edits, including frontmatter parsing and error handling. Update welcome post metadata and improve UI for editing posts.

src/app/api/admin/posts/route.ts

@@ -63,4 +63,26 @@ export async function PATCH(request: Request) {
       { status: 500 }
     );
   }
+}
+
+export async function PUT(request: Request) {
+  try {
+    const body = await request.json();
+    const { slug, path: folderPath, content } = body;
+    if (!slug || typeof content !== 'string') {
+      return NextResponse.json({ error: 'Missing slug or content' }, { status: 400 });
+    }
+    // Compute file path
+    const filePath = folderPath && folderPath.trim() !== ''
+      ? path.join(postsDirectory, folderPath, `${slug}.md`)
+      : path.join(postsDirectory, `${slug}.md`);
+    if (!fs.existsSync(filePath)) {
+      return NextResponse.json({ error: 'File does not exist' }, { status: 404 });
+    }
+    fs.writeFileSync(filePath, content, 'utf8');
+    return NextResponse.json({ success: true });
+  } catch (error) {
+    console.error('Error editing post:', error);
+    return NextResponse.json({ error: 'Error editing post' }, { status: 500 });
+  }
 }