import resolveCompanyAccess from '../companyuser/resolveCompanyAccess.js';
import { loadDelivery } from './helpers.js';

/**
 * Returns a single delivery by its id within a company.
 *
 * @param {object} pool - The mssql connection pool.
 * @returns {Function} An async function that fetches a delivery by id.
 *
 * @example
 * const fn = getById(pool);
 * const delivery = await fn(42, 1, 5);
 * // => { id, number, type, entityId, date, lines: [...] }
 */
export default function getById(pool) {
  const access = resolveCompanyAccess(pool);

  return async (googleAuthId, companyId, id) => {
    if (!Number.isFinite(id)) {
      throw new Error('Delivery not found');
    }

    await access(googleAuthId, companyId);

    const delivery = await loadDelivery(pool, null, companyId, id);
    if (!delivery) {
      throw new Error('Delivery not found');
    }
    return delivery;
  };
}