stacker.news/lib/badge.js

35 lines
1.1 KiB
JavaScript

export const CLEAR_NOTIFICATIONS = 'CLEAR_NOTIFICATIONS'
export const clearNotifications = () => navigator.serviceWorker?.controller?.postMessage({ action: CLEAR_NOTIFICATIONS })
const badgingApiSupported = (sw = window) => 'setAppBadge' in sw.navigator
const permissionGranted = async (sw = window) => {
const name = 'notifications'
let permission
try {
permission = await sw.navigator.permissions.query({ name })
} catch (err) {
console.error('Failed to check permissions', err)
}
return permission?.state === 'granted' || sw.Notification?.permission === 'granted'
}
export const setAppBadge = async (sw = window, count) => {
if (!badgingApiSupported(sw) || !(await permissionGranted(sw))) return
try {
await sw.navigator.setAppBadge(count)
} catch (err) {
console.error('Failed to set app badge', err)
}
}
export const clearAppBadge = async (sw = window) => {
if (!badgingApiSupported(sw) || !(await permissionGranted(sw))) return
try {
await sw.navigator.clearAppBadge()
} catch (err) {
console.error('Failed to clear app badge', err)
}
}