import { query } from "@/lib/db";
import { authErrorResponse, requireRole } from "@/lib/auth/session";
import { toCsv } from "@/lib/csv";
import type { Dish } from "@/lib/types";

export async function GET() {
  try {
    await requireRole(["staff", "admin"]);
    const dishes = await query<Dish>("select * from dishes order by name");
    const rows = [
      ["name", "name_en", "name_pl", "price", "allergens", "additives"],
      ...dishes.map((d) => [
        d.name,
        d.name_en ?? "",
        d.name_pl ?? "",
        String(d.price),
        (d.allergens ?? []).join(";"),
        (d.additives ?? []).join(";"),
      ]),
    ];
    return new Response(toCsv(rows), {
      headers: {
        "Content-Type": "text/csv; charset=utf-8",
        "Content-Disposition": 'attachment; filename="gerichte.csv"',
      },
    });
  } catch (err) {
    const res = authErrorResponse(err);
    if (res) return res;
    throw err;
  }
}