| /* |
| * Copyright © 2018 European Support Limited |
| * |
| * Licensed 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 axios from 'axios'; |
| |
| let prevLastScanned; |
| let updateNotificationsTimeout; |
| let config; |
| let notificationsWorkerUpdateMillisecond; |
| |
| function updateNotifications() { |
| axios(config) |
| .then(response => { |
| const notifications = response.data; |
| |
| let lastScanned = notifications.lastScanned; |
| if (prevLastScanned !== lastScanned) { |
| postMessage(notifications); |
| } |
| prevLastScanned = lastScanned; |
| }) |
| .catch(() => {}); |
| |
| updateNotificationsTimeout = setTimeout( |
| updateNotifications, |
| notificationsWorkerUpdateMillisecond |
| ); |
| } |
| |
| navigator.connection.onchange = () => { |
| clearTimeout(updateNotificationsTimeout); |
| |
| if (navigator.onLine && config && notificationsWorkerUpdateMillisecond) { |
| updateNotifications(); |
| } |
| }; |
| |
| onmessage = ({ data }) => { |
| if (data && data.config && data.notificationsWorkerUpdateMillisecond) { |
| config = data.config; |
| notificationsWorkerUpdateMillisecond = |
| data.notificationsWorkerUpdateMillisecond; |
| |
| updateNotifications(); |
| } |
| }; |