@shopgate/pwa-common-commerce/category/actions/fetchCategoryChildren.js

Commerce library for the Shopgate Connect PWA.

import PipelineRequest from '@shopgate/pwa-core/classes/PipelineRequest';
import { shouldFetchData, mutable } from '@shopgate/pwa-common/helpers/redux';
import { SHOPGATE_CATALOG_GET_CATEGORY_CHILDREN } from "../constants/Pipelines";
import requestCategoryChildren from "../action-creators/requestCategoryChildren";
import receiveCategoryChildren from "../action-creators/receiveCategoryChildren";
import errorCategoryChildren from "../action-creators/errorCategoryChildren";

/**
 * Retrieves category children for a certain category by ID.
 * @param {string} categoryId The ID of the category to request children for.
 * @return {Function} The dispatched action.
 */
function fetchCategoryChildren(categoryId) {
  return (dispatch, getState) => {
    const category = getState().category.childrenByCategoryId[categoryId];
    if (!shouldFetchData(category, 'children')) {
      return Promise.resolve(null);
    }
    dispatch(requestCategoryChildren(categoryId));
    const request = new PipelineRequest(SHOPGATE_CATALOG_GET_CATEGORY_CHILDREN).setInput({
      categoryId
    }).dispatch();
    request.then(result => {
      dispatch(receiveCategoryChildren(categoryId, result.categories));
    }).catch(() => {
      dispatch(errorCategoryChildren(categoryId));
    });
    return request;
  };
}

/** @mixes {MutableFunction} */
export default mutable(fetchCategoryChildren);