import { NextResponse } from 'next/server';
import db from '@/lib/db';

export const dynamic = 'force-dynamic';

// Body: { counters?: { id: number; order_index: number; group_id: number | null }[], groups?: { id: number; order_index: number }[] }
export async function PUT(request: Request) {
  const { counters, groups } = await request.json();

  const updateCounters = db.prepare(
    'UPDATE counters SET order_index = ?, group_id = ? WHERE id = ?'
  );
  const updateGroups = db.prepare(
    'UPDATE groups SET order_index = ? WHERE id = ?'
  );

  const reorderAll = db.transaction(() => {
    if (Array.isArray(counters)) {
      for (const c of counters) {
        updateCounters.run(c.order_index, c.group_id ?? null, c.id);
      }
    }
    if (Array.isArray(groups)) {
      for (const g of groups) {
        updateGroups.run(g.order_index, g.id);
      }
    }
  });

  reorderAll();
  return new NextResponse(null, { status: 204 });
}