clear-cache.js 2.95 KB
/*
 * ADOBE CONFIDENTIAL
 * __________________
 *
 *  Copyright 2016 Adobe Systems Incorporated
 *  All Rights Reserved.
 *
 * NOTICE:  All information contained herein is, and remains
 * the property of Adobe Systems Incorporated and its suppliers,
 * if any.  The intellectual and technical concepts contained
 * herein are proprietary to Adobe Systems Incorporated and its
 * suppliers and are protected by trade secret or copyright law.
 * Dissemination of this information or reproduction of this material
 * is strictly forbidden unless prior written permission is obtained
 * from Adobe Systems Incorporated.
 */

/* globals Promise */
define('screens/player/command/clear-cache', [
    'underscore',
    'screens/player/command/command',
    'screens/player/shared/serviceadmin',
    'screens/player/firmware/cache/cache',
    'module'
], function(_, PlayerCommand, ServiceAdmin, Cache, mod) {
    'use strict';

    /**
     * This command handler is able to process the following commands:
     * - "reset-firmware" clears the firmware cache, and falls back to the factory defaults
     * - "clear-channels" clears the channels cache
     * - "clear-app" clears the application cache
     * - "clear-all" clears the channels and the app cache, and reset the cache to the factory defaults
     *
     * @class ClearCacheCommand
     * @implements {PlayerCommand}
     */
    var ClearCacheCommand = _.extend({}, PlayerCommand, {

        serviceId: mod.id,

        /**
         * @function ClearCacheCommand#canHandle
         * @inheritdoc
         */
        canHandle: function(cmd) {
            return ['reset-firmware', 'clear-channels', 'clear-app', 'clear-all'].indexOf(cmd) > -1;
        },

        /**
         * @function ClearCacheCommand#activate
         * @inheritdoc
         */
        activate: function() {
            return new Promise(function(resolve, reject) {
                ServiceAdmin.onServiceHighestRankedStart(Cache.serviceName, function(cache) {
                    resolve(cache);
                });
            });
        },

        /**
         * @function ClearCacheCommand#handleCommand
         * @inheritdoc
         */
        handleCommand: function(command, payload) {
            var flags = {};
            flags[Cache.FLAGS.REBOOT_ON_COMPLETE] = true;
            var cache = ServiceAdmin.getService(Cache.serviceName);
            switch (command) {
                case 'reset-firmware': return cache.resetFirmware(flags);
                case 'clear-channels': return cache.clearChannelsData(flags);
                case 'clear-app': return cache.clearAppCache(flags);
                case 'clear-all': return cache.clearAll(flags);
                default: return null;
            }
        }

    });

    return ClearCacheCommand;
});

/* istanbul ignore next */
require([
    'screens/player/command/clear-cache',
    'screens/player/shared/serviceadmin'
], function(Service, ServiceAdmin) {
    'use strict';
    ServiceAdmin.register(Service);
});