// app/api/admin/create-playlist/route.ts
import { NextResponse } from 'next/server';
import { prisma } from '@/lib/prisma';
import { requireAdmin } from '@/lib/admin-check';

export async function POST(req: Request) {
  try {
    await requireAdmin();
    const { title, courseId, additionalCourseIds } = await req.json();
    if (!title || !courseId) return NextResponse.json({ error: 'missing fields' }, { status: 400 });

    const playlist = await prisma.playlist.create({
      data: {
        title,
        courseId,
        // Create CoursePlaylist mappings for additional courses
        courses: {
          create: (additionalCourseIds || []).map((cid: string) => ({
            courseId: cid,
          })),
        },
      },
      include: {
        courses: {
          include: { course: true },
        },
      },
    });
    return NextResponse.json({ playlist });
  } catch (err: any) {
    console.error(err);
    return NextResponse.json({ error: err?.message ?? 'server' }, { status: err?.status ?? 500 });
  }
}