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import runtime from 'serviceworker-webpack5-plugin/lib/runtime'
function urlBase64ToUint8Array (base64String) {
const padding = '='.repeat((4 - base64String.length % 4) % 4)
const base64 = (base64String + padding)
.replace(/-/g, '+')
.replace(/_/g, '/')
const rawData = window.atob(base64)
return Uint8Array.from([...rawData].map((char) => char.charCodeAt(0)))
}
export function isSWSupported () {
return 'serviceWorker' in navigator
}
function isPushSupported () {
return 'PushManager' in window
}
function getOrCreateServiceWorker () {
return runtime.register()
.catch((err) => console.error('Unable to get or create a service worker.', err))
}
function subscribePush (registration, isEnabled, vapidPublicKey) {
if (!isEnabled) return Promise.reject(new Error('Web Push is disabled in config'))
if (!vapidPublicKey) return Promise.reject(new Error('VAPID public key is not found'))
const subscribeOptions = {
userVisibleOnly: true,
applicationServerKey: urlBase64ToUint8Array(vapidPublicKey)
}
return registration.pushManager.subscribe(subscribeOptions)
}
function unsubscribePush (registration) {
return registration.pushManager.getSubscription()
.then((subscribtion) => {
if (subscribtion === null) { return }
return subscribtion.unsubscribe()
})
}
function deleteSubscriptionFromBackEnd (token) {
return fetch('/api/v1/push/subscription/', {
method: 'DELETE',
headers: {
'Content-Type': 'application/json',
Authorization: `Bearer ${token}`
}
}).then((response) => {
if (!response.ok) throw new Error('Bad status code from server.')
return response
})
}
function sendSubscriptionToBackEnd (subscription, token, notificationVisibility) {
return window.fetch('/api/v1/push/subscription/', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
Authorization: `Bearer ${token}`
},
body: JSON.stringify({
subscription,
data: {
alerts: {
follow: notificationVisibility.follows,
favourite: notificationVisibility.likes,
mention: notificationVisibility.mentions,
reblog: notificationVisibility.repeats,
move: notificationVisibility.moves
}
}
})
}).then((response) => {
if (!response.ok) throw new Error('Bad status code from server.')
return response.json()
}).then((responseData) => {
if (!responseData.id) throw new Error('Bad response from server.')
return responseData
})
}
export async function initServiceWorker () {
if (!isSWSupported()) return
await getOrCreateServiceWorker()
navigator.serviceWorker.addEventListener('message', (event) => {
console.log('SW MESSAGE', event)
// TODO actually act upon click (open drawer on mobile, open chat/thread etc)
})
}
export async function showDesktopNotification (content) {
const { active: sw } = await window.navigator.serviceWorker.getRegistration()
sw.postMessage({ type: 'desktopNotification', content })
}
export async function closeDesktopNotification ({ id }) {
const { active: sw } = await window.navigator.serviceWorker.getRegistration()
if (id >= 0) {
sw.postMessage({ type: 'desktopNotificationClose', content: { id } })
} else {
sw.postMessage({ type: 'desktopNotificationClose', content: { all: true } })
}
}
export async function updateFocus () {
const { active: sw } = await window.navigator.serviceWorker.getRegistration()
sw.postMessage({ type: 'updateFocus' })
}
export function registerPushNotifications (isEnabled, vapidPublicKey, token, notificationVisibility) {
if (isPushSupported()) {
getOrCreateServiceWorker()
.then((registration) => subscribePush(registration, isEnabled, vapidPublicKey))
.then((subscription) => sendSubscriptionToBackEnd(subscription, token, notificationVisibility))
.catch((e) => console.warn(`Failed to setup Web Push Notifications: ${e.message}`))
}
}
export function unregisterPushNotifications (token) {
if (isPushSupported()) {
Promise.all([
deleteSubscriptionFromBackEnd(token),
getOrCreateServiceWorker()
.then((registration) => {
return unsubscribePush(registration).then((result) => [registration, result])
})
.then(([registration, unsubResult]) => {
if (!unsubResult) {
console.warn('Push subscription cancellation wasn\'t successful')
}
})
]).catch((e) => console.warn(`Failed to disable Web Push Notifications: ${e.message}`))
}
}
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