Round 10: WYSIWYG Editor, Notification System, Calendar Events, Student UI, Drag-Reorder, Styling

src/app/api/notebooks/[id]/pages/reorder/route.ts

@@ -0,0 +1,76 @@
+import { NextResponse } from 'next/server';
+import { z } from 'zod';
+import { db } from '@/lib/db';
+import { getSession } from '@/lib/auth';
+
+// ── PUT: Reorder pages ──
+const reorderSchema = z.object({
+  pageOrders: z.array(
+    z.object({
+      id: z.string(),
+      pageNumber: z.number().int(),
+    })
+  ),
+});
+
+export async function PUT(
+  request: Request,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  try {
+    const session = await getSession();
+    if (!session?.user) {
+      return NextResponse.json({ error: 'Not authenticated' }, { status: 401 });
+    }
+
+    const { id } = await params;
+
+    const notebook = await db.notebook.findUnique({
+      where: { id, deletedAt: null },
+    });
+
+    if (!notebook) {
+      return NextResponse.json(
+        { error: 'Notebook not found' },
+        { status: 404 }
+      );
+    }
+
+    if (notebook.ownerId !== session.user.id) {
+      return NextResponse.json({ error: 'Access denied' }, { status: 403 });
+    }
+
+    const body = await request.json();
+    const parsed = reorderSchema.safeParse(body);
+    if (!parsed.success) {
+      return NextResponse.json(
+        { error: 'Validation failed', details: parsed.error.issues },
+        { status: 400 }
+      );
+    }
+
+    // Update each page's pageNumber in a transaction
+    await db.$transaction(
+      parsed.data.pageOrders.map((po) =>
+        db.notebookPage.update({
+          where: { id: po.id },
+          data: { pageNumber: po.pageNumber },
+        })
+      )
+    );
+
+    // Return updated pages
+    const pages = await db.notebookPage.findMany({
+      where: { notebookId: id },
+      orderBy: { pageNumber: 'asc' },
+    });
+
+    return NextResponse.json(pages);
+  } catch (error) {
+    console.error('Notebook page reorder error:', error);
+    return NextResponse.json(
+      { error: 'Internal server error' },
+      { status: 500 }
+    );
+  }
+}