ui-modules/blueprint-composer/app/components/providers/recently-used-service.provider.js

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import angular from 'angular';

const MODULE_NAME = 'brooklyn.composer.service.recently-user';

angular.module(MODULE_NAME, [])
    .provider('recentlyUsedService', recentlyUsedServiceProvider);

export default MODULE_NAME;

export function recentlyUsedServiceProvider() {
    return {
        $get: ['$log', function ($log) { return new RecentlyUsedService($log); }]
    }
}

export const PREFIX = 'org.apache.brooklyn.composer.lastUsed:';

function RecentlyUsedService($log) {
    let service = {};
    
    service.getId = (brooklynObject) => {
        if (typeof brooklynObject === 'string') return brooklynObject;
        return (brooklynObject.containingBundle || '?') + "::" + 
            (brooklynObject.symbolicName || '?') + ":" + (brooklynObject.version || '?');
    };
    
    service.markUsed = (item, when) => {
        let id = service.getId(item);
        if (when) {
            let old = service.getLastUsed(id);
            if (old > when) return;
        } else {
            when = Date.now();
        }
        sessionStorage.setItem(PREFIX+id, when);
        // update the item if it is embellished
        if (item.lastUsed) item.lastUsed = when;
    };
    service.getLastUsed = (item) => {
        let id = service.getId(item); 
        let s = sessionStorage.getItem(PREFIX+id);
        if (s) return ((Number)(s));
        let tag = item.tags && item.tags.find(t => t['ui-composer-recent-preselect']);
        if (tag) return tag['ui-composer-recent-preselect']; 
        return -1; 
    };
    
    service.embellish = (item) => {
        item.lastUsed = service.getLastUsed(item);
    };
    
    return service;
}