@shopgate/engage/core/config/config.selectors.js

Shopgate's ENGAGE library.

import { createSelector } from 'reselect';

// Use a shared empty object so selectors that fall back to "no config"
// remain referentially stable across calls with the same state value.
// Fixes reselect warning about selector returning new value each time.
const EMPTY_CONFIG = {};

/**
 * Retrieves the config state from the store.
 * @param {Object} state The current application state.
 * @return {Object} The locations state.
 */
function getState(state) {
  return state?.settings?.config || EMPTY_CONFIG;
}

/**
 * Creates the selector that retrieves the config.
 * @returns {Function}
 */
export function makeGetConfig() {
  /**
   * @param {Object} state The application state.
   * @returns {Object}
   */
  return createSelector(getState, state => state);
}

/**
 * Creates the selector that retrieves the merchant settings.
 * @returns {Function}
 */
export function makeGetMerchantSettings() {
  /**
   * @param {Object} state The application state.
   * @returns {Object}
   */
  return createSelector(getState, state => state.merchantSettings || {});
}

/**
 * Selector that retrieves the shop settings.
 * @param {Object} state The application state.
 * @returns {Object}
 */
export const getShopSettings = state => state?.settings?.config?.shopSettings || {};

/**
 * Selector that retrieves whether the config is still fetching.
 * @param {Object} state The application state.
 * @returns {Object}
 */
export const getConfigFetching = state => state?.settings?.config?.isFetching || false;

/**
 * Creates a selector that retrieves the enabled fulfillment paths from the merchant settings.
 * @returns {Function}
 */
export function makeGetEnabledFulfillmentMethods() {
  const getMerchantSettings = makeGetMerchantSettings();
  return createSelector(getMerchantSettings, settings => {
    if (!Array.isArray(settings.enabledFulfillmentMethods)) {
      return null;
    }
    return settings.enabledFulfillmentMethods;
  });
}

/**
 * Creates a selector that counts the enabled fulfillment paths from the merchant settings.
 * @returns {Function}
 */
export function makeGetEnabledFulfillmentMethodsCount() {
  const getEnabledFulfillmentMethods = makeGetEnabledFulfillmentMethods();
  return createSelector(getEnabledFulfillmentMethods, methods => {
    if (methods === null) {
      return 0;
    }
    return methods.length;
  });
}

/**
 * Creates a selector that retrieves the enabled fulfillment paths.
 * @returns {Function}
 */
export function makeGetFulfillmentPaths() {
  const getMerchantSettings = makeGetMerchantSettings();
  return createSelector(getMerchantSettings, settings => {
    if (!settings || Object.keys(settings).length === 0) {
      return [];
    }
    const {
      enabledFulfillmentMethodSelectionForEngage = []
    } = settings;
    return enabledFulfillmentMethodSelectionForEngage;
  });
}

/**
 * Creates a selector that retrieves the default unit system
 * @returns {Function}
 */
export const makeGetDefaultUnitSystem = () => {
  const getMerchantSettings = makeGetMerchantSettings();
  return createSelector(getMerchantSettings, settings => {
    if (!settings || Object.keys(settings).length === 0) {
      return null;
    }
    return settings.defaultUnitSystem || null;
  });
};

/**
 * @returns {Function}
 */
export const makeUseLocationFulfillmentMethods = () => createSelector(() => true);