@ou-imdt/utils/lib/dev/loadData.js

Utility library for interactive media development

import isLocalAvailable from '../isLocalAvailable.js';
import getSavePrefix from './getSavePrefix.js';

/**
 * Loads data from localStorage.
 * @param {Object} options - Options for loading data.
 * @param {boolean | string} options.user - User/global, or group identifier.
 * @param {array} options.fields - Array of names - data to load.
 * @param {string} [options.activityId] - Optional activity ID.
 * @param {string} [options.documentId] - Optional document ID.
 * @param {string} [options.courseId] - Optional course ID.
 * @param {string} [options.modName] - Optional mod name.
 * @returns {Promise<any>} A promise that resolves with the loaded data, or rejects on error.
 */
export default async function loadDevData(options) {  
  if (!isLocalAvailable()) throw new Error('Local storage is not available');

  const { fields = ['widgetData'] } = options;

  try {
    await new Promise(resolve => setTimeout(resolve, 0)); // add flag to make async?

    const prefix = getSavePrefix(options);
    const values = Object.fromEntries(fields.map((key) => {
      return [key, JSON.parse(localStorage.getItem(`${prefix}:${key}`)) ?? ''];
    }));
    return values;
  } catch (err) {
    throw new Error('Error loading data');
  }

  // TODO check with Mustafa/Edwin...
  // const local = {};
  // if (['string', 'number'].includes(typeof user)) { // is a group
  //   const data = localStorage.getItem(user);
  //   const json = data ? JSON.parse(data) : {};
  //   fields.reduce((result, field) => {
  //     result[field] = json[field] || '';
  //     return result;
  //   }, local);
  // }
}