import fs from 'node:fs';
import { v4 as id } from 'uuid';

const PRODUCTS_PATH = '../data/products.json';

/** Ein vollständiges Produkt, so wie es in products.json steht. */
interface Product {
  _id: string;
  position: number;
  name: string;
  price: number;
}

/** Produkt aus der Datei - _id und position können noch fehlen. */
type ProductInput = Omit<Product, '_id' | 'position'> & Partial<Pick<Product, '_id' | 'position'>>;

console.log(id()); // 97412ca6-c7a8-4868-a49b-3cf4c2258dd8

try {
  const data = JSON.parse(fs.readFileSync(PRODUCTS_PATH, 'utf-8')) as ProductInput[];

  const products: Product[] = data.map((product, index) => {
    return { _id: product._id || id(), position: index + 1, ...product };
  });

  console.log(products);

  fs.writeFileSync(PRODUCTS_PATH, JSON.stringify(products, null, 2), 'utf-8');
  console.log('File modified');
} catch (error) {
  console.log(error);
}