Initial commit

app/api/admin/reorder-videos/route.ts

@@ -0,0 +1,55 @@
+// app/api/admin/reorder-videos/route.ts
+import { NextResponse } from 'next/server';
+import { getServerSession } from 'next-auth';
+import { authOptions } from '@/lib/auth-options';
+import { prisma } from '@/lib/prisma';
+
+export async function POST(req: Request) {
+  try {
+    const session = await getServerSession(authOptions);
+    if (!session?.user?.email)
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+
+    const role = (session as any)?.user?.role ?? null;
+    if (!(role === 'admin' || role === 'superadmin')) {
+      return NextResponse.json({ error: 'Forbidden' }, { status: 403 });
+    }
+
+    const body = await req.json().catch(() => ({}));
+    const { playlistId, orderedIds } = body ?? {};
+    if (!playlistId || !Array.isArray(orderedIds))
+      return NextResponse.json({ error: 'playlistId and orderedIds required' }, { status: 400 });
+
+    // Validate that all video ids belong to the playlist (optional)
+    const vids = await prisma.video.findMany({ where: { playlistId }, select: { id: true } });
+    const validIds = new Set(vids.map((v) => v.id));
+    const invalid = orderedIds.find((id: string) => !validIds.has(id));
+    if (invalid)
+      return NextResponse.json({ error: 'Invalid video id in orderedIds' }, { status: 400 });
+
+    // Use two-phase update to avoid unique constraint violation:
+    // Phase 1: Set all indices to negative temporary values
+    // Phase 2: Set to final positive values
+    await prisma.$transaction([
+      // Phase 1: Set temporary negative indices to avoid conflicts
+      ...orderedIds.map((id: string, idx: number) =>
+        prisma.video.update({
+          where: { id },
+          data: { index: -(idx + 1) }, // Use negative values: -1, -2, -3, etc.
+        })
+      ),
+      // Phase 2: Set to final indices
+      ...orderedIds.map((id: string, idx: number) =>
+        prisma.video.update({
+          where: { id },
+          data: { index: idx },
+        })
+      ),
+    ]);
+
+    return NextResponse.json({ success: true });
+  } catch (err: any) {
+    console.error('reorder videos error', err);
+    return NextResponse.json({ error: err?.message ?? 'server error' }, { status: 500 });
+  }
+}