import { UPDATE_WEIGHT } from '../../sql/article.js';
import queryBySku from './queryBySku.js';
import resolveArticleBySku from './resolveArticleBySku.js';

/**
 * Sets the weight of an article by its SKU.
 *
 * @param {object} pool - The mssql connection pool.
 * @returns {Function} An async function that sets the article weight.
 *
 * @example
 * const fn = setWeightBySku(pool);
 * const article = await fn(42, 'SKU-1', 1.5);
 * // => { id, sku, name, ... }
 */
export default function setWeightBySku(pool) {
  const resolve = resolveArticleBySku(pool);
  const load = queryBySku(pool);

  return async (googleAuthId, sku, weight) => {
    if (!Number.isFinite(weight) || weight < 0) {
      throw new Error('Invalid weight');
    }

    const { articleId, languageId } = await resolve(googleAuthId, sku);

    const result = await pool
      .request()
      .input('articleId', articleId)
      .input('weight', weight)
      .query(UPDATE_WEIGHT);

    if (!result.rowsAffected[0]) {
      throw new Error('Article not found');
    }

    const article = await load(articleId, languageId);
    if (!article) {
      throw new Error('Article not found');
    }

    return article;
  };
}