@shopgate/pwa-common-commerce/category/reducers/childrenByCategoryId.js

Commerce library for the Shopgate Connect PWA.

import { ENOTFOUND } from '@shopgate/pwa-core/constants/Pipeline';
import { CATEGORY_LIFETIME, REQUEST_CATEGORY, RECEIVE_CATEGORY, REQUEST_CATEGORY_CHILDREN, RECEIVE_CATEGORY_CHILDREN, ERROR_CATEGORY, ERROR_CATEGORY_CHILDREN } from "../constants";

/**
 * Stores a collection of child category IDs by their parent's category ID.
 * @param {Object} [state={}] The current state.
 * @param {Object} action The action object.
 * @returns {Object} The new state.
 */
const childrenByCategoryId = (state = {}, action = {}) => {
  switch (action.type) {
    case REQUEST_CATEGORY:
    case REQUEST_CATEGORY_CHILDREN:
      return {
        ...state,
        [action.categoryId]: {
          ...state[action.categoryId],
          children: null,
          isFetching: true,
          expires: 0
        }
      };
    case RECEIVE_CATEGORY:
    case RECEIVE_CATEGORY_CHILDREN:
      {
        const actionChildren = action.categoryChildren;
        return {
          ...state,
          [action.categoryId]: {
            ...state[action.categoryId],
            // If it has children, append them.
            children: actionChildren ? action.categoryChildren.map(child => child.id) : null,
            isFetching: false,
            expires: Date.now() + CATEGORY_LIFETIME
          }
        };
      }
    case ERROR_CATEGORY:
    case ERROR_CATEGORY_CHILDREN:
      if (action.errorCode === ENOTFOUND) {
        // Remove the temporary entry from the state when noting was found for the categoryId.
        const {
          [action.categoryId]: ignore,
          ...rest
        } = state;
        return rest;
      }
      return {
        ...state,
        [action.categoryId]: {
          ...state[action.categoryId],
          isFetching: false
        }
      };
    default:
      return state;
  }
};
export default childrenByCategoryId;