import { GET_ARTICLE_BY_SKU_FULL as MSSQL_QUERY } from '../../providers/mssql/queries/article.js';
import { GET_ARTICLE_BY_SKU_FULL as SQLITE_QUERY } from '../../providers/sqlite3/queries/article.js';
import makeRunner from '../runner.js';

function parseJsonArray(raw) {
  if (!raw) return [];
  const arr = typeof raw === 'string' ? JSON.parse(raw) : raw;
  return Array.isArray(arr) ? arr : [];
}

export default function getBySku(provider) {
  const sql = provider?.dialect === 'sqlite3' ? SQLITE_QUERY : MSSQL_QUERY;

  /**
   * Returns the full detail of an article by its SKU, including unit, brand,
   * categories, photos, EANs and prices.
   *
   * @param {number} googleAuthId - The id of the Google auth user.
   * @param {string} sku - The article SKU.
   * @param {object} [tx] - Optional transaction.
   * @returns {Promise<{article: {id: number, sku: string, name: string, slug: string, unitamount: number|null, weight: number|null, track_stock: boolean, unit: {si: string|null, basesi: string|null, basesifactor: number|null, symbol: string|null, name: string|null}, brand: {id: number|null, name: string, fullHash: string|null, thumbW: number|null, thumbH: number|null, thumbHash: string|null}|null, categoryIds: number[], photos: Array<{sort: number, fullHash: string, fullW: number, fullH: number, fullSize: number, thumbW: number, thumbH: number, thumbHash: string}>, eans: string[], prices: Array<{minmultiplier: number, net: number, taxRate: number, customergroupId: number}>, suppliers: Array<{id: number, articleId: number, entityId: number, supplierName: string|null, sku: string|null, pu: number, stock: number|null, sort: number, priceId: number|null, price: {net: number, taxId: number, taxRate?: number}|null}>, optionsCount: number, articleListCount: number, childCount: number, parentArticleId: number|null, parentSku: string|null}}>} The full article detail.
   * @throws {Error} If the article is not found or the user is not authorized.
   *
   * @example
   * const article = await store.article.getBySku(42, 'SKU-1');
   * // => { article: { id, sku, name, unit, brand, categoryIds, photos, eans, prices, ... } }
   */
  return async (googleAuthId, sku, tx) => {
    const t0 = performance.now();
    const runner = makeRunner(provider, tx);
    const result = await runner.query(sql, { sku, googleAuthId });
    console.log(`[getBySku] single query ${(performance.now() - t0).toFixed(1)}ms`);

    const row = result.rows[0];
    if (!row) {
      throw new Error('Article not found');
    }
    if (!row.articleId || !row.categoryId) {
      throw new Error('Article not found');
    }
    if (!row.companyId || !row.rootCategoryId || !row.languageId) {
      throw new Error('Parent not found');
    }
    if (!row.companyuserId) {
      throw new Error('Not authorized');
    }


    const a = typeof row.articleJson === 'string' ? JSON.parse(row.articleJson) : row.articleJson;

    return {
      article: {
        id: a.id,
        sku: a.sku,
        name: a.name,
        slug: a.slug,
        unitamount: a.unitamount,
        weight: a.weight,
        track_stock: Boolean(a.track_stock ?? 1),
        unit: {
          si: a.unitSi,
          basesi: a.unitBasesi,
          basesifactor: a.unitBasesifactor,
          symbol: a.unitSymbol ?? null,
          name: a.unitName ?? null,
        },
        brand: a.brandName
          ? {
              id: a.brandId ?? null,
              name: a.brandName,
              fullHash: a.brandFullHash ?? null,
              thumbW: a.brandThumbW ?? null,
              thumbH: a.brandThumbH ?? null,
              thumbHash: a.brandThumbHash ?? null,
            }
          : null,
        categoryIds: parseJsonArray(a.categoryIdsJson).map((r) => r.category_id),
        photos: parseJsonArray(a.photosJson),
        eans: parseJsonArray(a.eansJson).map((r) => r.ean),
        prices: parseJsonArray(a.pricesJson),
        suppliers: parseJsonArray(a.suppliersJson).map((s) => ({
          id: s.id,
          articleId: s.articleId,
          entityId: s.entityId,
          supplierName: s.supplierName,
          sku: s.sku ?? null,
          pu: s.pu,
          stock: s.stock ?? null,
          sort: s.sort,
          priceId: s.priceId ?? null,
          price: s.priceId != null && s.price?.net != null ? s.price : null,
        })),
        warehouses: parseJsonArray(a.warehousesJson).map((w) => ({
          id: w.id,
          name: w.name,
          sort: Number(w.sort ?? 0),
          stock: Number(w.stock ?? 0),
        })),
        optionsCount: a.optionsCount,
        optionslistId: a.optionslistId ?? null,
        options: parseJsonArray(a.optionslistItemsJson).map((o) => ({
          id: o.id,
          articleId: o.articleId,
          sku: o.sku,
          name: o.name ?? null,
          count: Number(o.count ?? 1),
          sort: Number(o.sort ?? 0),
          mandated: Boolean(o.mandated),
        })),
        articleListCount: a.articleListCount,
        articlelistId: a.articlelistId ?? null,
        articlelist: parseJsonArray(a.articlelistItemsJson).map((item) => ({
          id: item.id,
          articleId: item.articleId,
          sku: item.sku,
          name: item.name ?? null,
          count: Number(item.count ?? 1),
          sort: Number(item.sort ?? 0),
        })),
        childCount: a.childCount,
        isParent: Boolean(a.isParent),
        parentAttributeNameId: a.parentAttributeNameId ?? null,
        parentAttributeName: a.parentAttributeName ?? null,
        parentAttributeExclusive: a.parentAttributeExclusive != null ? Boolean(a.parentAttributeExclusive) : null,
        parentArticleId: a.parentArticleId,
        parentSku: a.parentSku,
        children: parseJsonArray(a.childrenJson).map((c) => ({
          id: c.id,
          sku: c.sku,
          parentsort: c.parentsort,
          name: c.name ?? null,
          attributeValueId: c.attributeValueId ?? null,
          attributeValue: c.attributeValue ?? null,
        })),
      },
    };
  };
}