@shopgate/pwa-common-commerce/category/actions/fetchCategory.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 { errorBehavior } from '@shopgate/engage/core';
import { SHOPGATE_CATALOG_GET_CATEGORY } from "../constants/Pipelines";
import fetchCategoryChildren from "./fetchCategoryChildren";
import requestCategory from "../action-creators/requestCategory";
import receiveCategory from "../action-creators/receiveCategory";
import errorCategory from "../action-creators/errorCategory";
import { getCategory } from "../selectors";

/**
 * Fetches the data for a given category ID (including child categories).
 * @param {string} categoryId The category ID.
 * @return {Function} The dispatched action.
 */
function fetchCategory(categoryId) {
  return (dispatch, getState) => {
    const category = getCategory(getState(), {
      categoryId
    });

    // Check if we need to fetch data
    if (!shouldFetchData(category)) {
      /**
       * Child categories are maybe missing.
       * So we need to check it (check happens inside fetchCategoryChildren).
       * This is the case if we got categories from getRootCategory
      */
      if (category.childrenCount) {
        dispatch(fetchCategoryChildren(categoryId));
      }
      return Promise.resolve(category);
    }

    // No data at all. So we have to fetch the category with children included
    dispatch(requestCategory(categoryId));
    const request = new PipelineRequest(SHOPGATE_CATALOG_GET_CATEGORY).setInput({
      categoryId,
      includeChildren: true
    }).setResponseBehavior({
      error: errorBehavior.modal()
    }).dispatch();
    request.then(result => {
      dispatch(receiveCategory(categoryId, result, result.children || []));
    }).catch(error => {
      dispatch(errorCategory(categoryId, error.code));
    });
    return request;
  };
}

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