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

export const dynamic = 'force-dynamic';

export async function GET() {
  const groups = db.prepare('SELECT * FROM groups ORDER BY order_index ASC, id ASC').all();
  return NextResponse.json(groups);
}

export async function POST(request: Request) {
  const { name } = await request.json();
  if (!name?.trim()) {
    return NextResponse.json({ error: 'Name is required' }, { status: 400 });
  }
  const maxOrder = (db.prepare(
    'SELECT COALESCE(MAX(order_index), -1) AS m FROM groups'
  ).get() as { m: number }).m;
  const result = db.prepare(
    'INSERT INTO groups (name, order_index) VALUES (?, ?)'
  ).run(name.trim(), maxOrder + 1);
  const group = db.prepare('SELECT * FROM groups WHERE id = ?').get(result.lastInsertRowid);
  return NextResponse.json(group, { status: 201 });
}