@oat-sa/tao-test-runner-qti/src/config/assetManager.js

TAO Test Runner QTI implementation

/**
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2017-2019 Open Assessment Technologies SA ;
 */

/**
 * Get the configured asset manager factory
 *
 * TODO implement ability to override the strategies by configuration
 *
 * @author Bertrand Chevrier <bertrand@taotesting.com>
 */
import assetManagerFactory from 'taoItems/assets/manager';
import assetStrategies from 'taoItems/assets/strategies';
import assetPortableElement from 'taoQtiItem/portableElementRegistry/assetManager/portableAssetStrategy';

/**
 * The default strategies
 */
var defaultStrategies = [
    assetStrategies.packedUrl,
    assetStrategies.external,
    assetStrategies.base64,
    assetStrategies.baseUrl,
    assetPortableElement
];

//keep reference per test id
var assetManagers = {};

/**
 * Gives access to a configured assetManagerFactory
 * @param {String} testId - a unique identifier for the test instance
 * @returns {assetManagerFactory}
 */
export default function getAssetManager(testId) {
    var assetManager;

    if (typeof assetManagers[testId] !== 'undefined') {
        assetManager = assetManagers[testId];
    } else {
        assetManager = assetManagerFactory(defaultStrategies, { baseUrl: '' });
        assetManagers[testId] = assetManager;
    }

    return assetManager;
}