import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/db";

export async function PATCH(request: NextRequest) {
  try {
    const body = await request.json();
    const { items } = body;

    if (!Array.isArray(items)) {
      return NextResponse.json({ error: "Invalid input" }, { status: 400 });
    }

    // items should be an array of { id, sortOrder, groupId }
    // Using a transaction to perform all updates
    await prisma.$transaction(
      items.map((item: any) =>
        prisma.quizSet.update({
          where: { id: item.id },
          data: {
            sortOrder: item.sortOrder,
            groupId: item.groupId,
          },
        })
      )
    );

    return NextResponse.json({ success: true });
  } catch (error) {
    return NextResponse.json({ error: "Failed to reorder quizzes" }, { status: 500 });
  }
}