import { NextResponse } from "next/server";
import { getCatalog, saveCatalog } from "@/lib/store";
import type { Catalog } from "@/lib/types";

export async function GET() {
  return NextResponse.json(await getCatalog());
}

export async function PUT(req: Request) {
  const body = (await req.json()) as Catalog;
  if (!Array.isArray(body?.products) || !Array.isArray(body?.businessUnits)) {
    return NextResponse.json({ error: "Malformed catalog" }, { status: 400 });
  }
  const ids = new Set<string>();
  for (const p of body.products) {
    if (!p.id || !p.name) return NextResponse.json({ error: "Product needs an id and a name" }, { status: 400 });
    if (ids.has(p.id)) return NextResponse.json({ error: `Duplicate product id: ${p.id}` }, { status: 400 });
    ids.add(p.id);
  }
  return NextResponse.json(await saveCatalog(body));
}