import { UPDATE_WEIGHT as MSSQL_UPDATE_WEIGHT } from '../../providers/mssql/queries/article.js';
import { UPDATE_WEIGHT as SQLITE_UPDATE_WEIGHT } from '../../providers/sqlite3/queries/article.js';
import { INSERT as MSSQL_INSERT_HISTORY } from '../../providers/mssql/queries/articlehistory.js';
import { INSERT as SQLITE_INSERT_HISTORY } from '../../providers/sqlite3/queries/articlehistory.js';
import queryBySku from './queryBySku.js';
import resolveArticleBySku from './resolveArticleBySku.js';
import makeRunner from '../runner.js';

export default function setWeightBySku(provider) {
  const resolve = resolveArticleBySku(provider);
  const load = queryBySku(provider);
  const sql = provider?.dialect === 'sqlite3' ? SQLITE_UPDATE_WEIGHT : MSSQL_UPDATE_WEIGHT;
  const insertHistorySql = provider?.dialect === 'sqlite3' ? SQLITE_INSERT_HISTORY : MSSQL_INSERT_HISTORY;

  /**
   * Sets the weight of an article by its SKU.
   *
   * @param {number} googleAuthId - The id of the Google auth user.
   * @param {string} sku - The article SKU.
   * @param {number} weight - The weight (must be >= 0).
   * @param {object} [tx] - Optional transaction.
   * @returns {Promise<object>} The updated article.
   * @throws {Error} If the weight is invalid or the article is not found.
   *
   * @example
   * const article = await store.article.setWeightBySku(42, 'SKU-1', 1.5);
   * // => { id, sku, name, ... }
   */
  return async (googleAuthId, sku, weight, tx) => {
    if (!Number.isFinite(weight) || weight < 0) {
      throw new Error('Invalid weight');
    }

    const runner = makeRunner(provider, tx);
    const { articleId, languageId, companyuserId } = await resolve(googleAuthId, sku, runner);

    // Read old weight for history
    const oldRes = await runner.query(
      'SELECT weight FROM article WHERE id = @articleId',
      { articleId },
    );
    const oldWeight = oldRes.rows[0]?.weight ?? 0;

    const result = await runner.query(sql, {
      articleId,
      weight,
    });

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

    // Write history if weight changed
    if (Number(oldWeight) !== weight) {
      await runner.query(insertHistorySql, {
        articleId,
        companyuserId,
        text: `Gewicht geändert von "${oldWeight}" auf "${weight}"`,
      });
    }

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

    return article;
  };
}