/**
 * Actores XState (fromPromise) — wrappers de side effects async.
 * La machine es pura; estos actores aíslan llamadas a DB / WooCommerce / LLM.
 */

import { fromPromise } from "xstate";
import { retrieveCandidates } from "../catalogRetrieval.js";
import { getProductQtyRules } from "../../0-ui/db/repo.js";

/**
 * Busca candidatos para una lista de queries de producto.
 * Input: { tenantId, items: [{product_query, quantity, unit}, ...] }
 * Output: array paralelo a items con { query, quantity, unit, candidates }
 */
export const searchCatalogActor = fromPromise(async ({ input }) => {
  const { tenantId, items = [] } = input || {};
  const results = [];
  for (const it of items) {
    if (!it?.product_query) continue;
    const r = await retrieveCandidates({ tenantId, query: it.product_query, limit: 20 });
    results.push({
      query: it.product_query,
      quantity: it.quantity ?? null,
      unit: it.unit ?? null,
      candidates: r?.candidates || [],
    });
  }
  return results;
});

/**
 * Lookup de qty rules para un producto.
 * Input: { tenantId, wooProductId }
 * Output: array de rules
 */
export const getQtyRulesActor = fromPromise(async ({ input }) => {
  const { tenantId, wooProductId } = input || {};
  if (!tenantId || !wooProductId) return [];
  return await getProductQtyRules({ tenantId, wooProductId });
});

export const actors = {
  searchCatalogActor,
  getQtyRulesActor,
};