import type { NextApiRequest, NextApiResponse } from "next";

const library: any[] = [];

export default function handler(req: NextApiRequest, res: NextApiResponse) {
  res.setHeader("Content-Type", "application/json");

  if (req.method === "GET") {
    return res.status(200).json({ items: library });
  }

  if (req.method === "POST") {
    try {
      const item = req.body;
      if (!item || !item.id) {
        return res.status(400).json({ error: "Item with id is required" });
      }
      library.push(item);
      return res.status(201).json({ ok: true, item });
    } catch {
      return res.status(400).json({ error: "Invalid JSON body" });
    }
  }

  return res.status(405).json({ error: "Method not allowed" });
}