53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
// This code executes in its own worker or thread
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self.addEventListener("install", event => {
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checkNotificationPromise();
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interval = setInterval(() => fetchAndCacheLatestNews(), 1000);
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});
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self.addEventListener("fetch", (e) => {
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console.log(`[Service Worker] Fetched resource ${e.request.url}`);
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});
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let interval = 0;
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function handleNotification(title, notif) {
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if (checkNotificationPromise()) {
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self.registration.showNotification(title, notif);
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} else {
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self.registration.showNotification(title, notif);
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}
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}
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async function fetchAndCacheLatestNews() {
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const response = await fetch('/api/teasense');
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const data = await response.json();
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const temp = data[data.length - 1].value;
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if (temp) {
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if (temp >= ALERT_THRESHOLD) {
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handleNotification('TeaSense Alert', {
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body: '♨️ ',
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tag: 1,
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});
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} else if (temp < ALERT_THRESHOLD && temp > WARNING_THRESHOLD) {
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handleNotification('TeaSense Warning', {
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body: '🫖',
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tag: 1,
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});
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}
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}
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}
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function checkNotificationPromise() {
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try {
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Notification.requestPermission().then();
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} catch (e) {
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return false;
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}
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return true;
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}
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const ALERT_THRESHOLD = 80.0;
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const WARNING_THRESHOLD = 75.0;
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