import { NextResponse } from "next/server";
import { query, queryOne } from "@/lib/db";
import { loadTranslationsFor, replaceTranslations } from "@/lib/db/translations";
import { authErrorResponse, requireRole } from "@/lib/auth/session";
import { isSameOrigin } from "@/lib/origin";
import type { Dish } from "@/lib/types";

interface DishRow {
  id: string;
  name: string;
  price: string;
  allergens: string[];
  additives: string[];
}

async function withTranslations(rows: DishRow[]): Promise<Dish[]> {
  const translations = await loadTranslationsFor(
    "dish_translations",
    rows.map((r) => r.id)
  );
  return rows.map((r) => ({
    ...r,
    price: Number(r.price),
    translations: translations.get(r.id) ?? {},
  }));
}

export async function GET() {
  const rows = await query<DishRow>(
    "select id, name, price, allergens, additives from dishes order by name"
  );
  return NextResponse.json(await withTranslations(rows));
}

export async function POST(request: Request) {
  if (!isSameOrigin(request)) {
    return NextResponse.json({ error: "Nicht erlaubt." }, { status: 403 });
  }
  try {
    await requireRole(["staff", "admin"]);
    const body = (await request.json()) as {
      name: string;
      price: number;
      allergens: string[];
      additives: string[];
      translations?: Record<string, string | null>;
    };
    const row = (await queryOne<DishRow>(
      `insert into dishes (name, price, allergens, additives)
       values ($1, $2, $3, $4) returning id, name, price, allergens, additives`,
      [body.name, body.price, body.allergens, body.additives]
    ))!;
    if (body.translations) {
      await replaceTranslations("dish_translations", row.id, body.translations);
    }
    const [dish] = await withTranslations([row]);
    return NextResponse.json(dish, { status: 201 });
  } catch (err) {
    const res = authErrorResponse(err);
    if (res) return res;
    throw err;
  }
}