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/*
* 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();
}
};
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