304 lines
8.7 KiB
JavaScript
304 lines
8.7 KiB
JavaScript
const timestamp = '__timestamp__'
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const ASSETS = `assets_${timestamp}`
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const WEBPACK_ASSETS = `webpack_assets_${timestamp}`
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// `assets` is an array of everything in the `assets` directory
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const assets = __assets__
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.map(file => file.startsWith('/') ? file : `/${file}`)
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.filter(filename => !filename.startsWith('/apple-icon'))
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.concat(['/index.html'])
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// `shell` is an array of all the files generated by webpack
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// also contains '/index.html' for some reason
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const webpackAssets = __shell__
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.filter(filename => !filename.endsWith('.map'))
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.filter(filename => filename !== '/index.html')
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// `routes` is an array of `{ pattern: RegExp }` objects that
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// match the pages in your app
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const routes = __routes__
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self.addEventListener('install', event => {
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event.waitUntil((async () => {
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await Promise.all([
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caches.open(WEBPACK_ASSETS).then(cache => cache.addAll(webpackAssets)),
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caches.open(ASSETS).then(cache => cache.addAll(assets))
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])
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self.skipWaiting()
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})())
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})
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self.addEventListener('activate', event => {
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event.waitUntil((async () => {
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let keys = await caches.keys()
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// delete old asset/ondemand caches
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for (let key of keys) {
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if (key !== ASSETS &&
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!key.startsWith('webpack_assets_')) {
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await caches.delete(key)
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}
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}
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// for webpack assets, keep the two latest builds because we may need
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// them when the service worker has installed but the page has not
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// yet reloaded (e.g. when it gives the toast saying "please reload"
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// but then you don't refresh and instead load an async chunk)
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let webpackKeysToDelete = keys
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.filter(key => key.startsWith('webpack_assets_'))
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.sort((a, b) => {
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let aTimestamp = parseInt(a.substring(15), 10)
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let bTimestamp = parseInt(b.substring(15), 10)
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return bTimestamp < aTimestamp ? -1 : 1
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})
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.slice(2)
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for (let key of webpackKeysToDelete) {
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await caches.delete(key)
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}
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await self.clients.claim()
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})())
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})
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self.addEventListener('fetch', event => {
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const req = event.request
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const url = new URL(req.url)
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// don't try to handle e.g. data: URIs
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if (!url.protocol.startsWith('http')) {
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return
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}
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event.respondWith((async () => {
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let sameOrigin = url.origin === self.origin
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if (sameOrigin) {
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// always serve webpack-generated resources and
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// assets from the cache if possible
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let response = await caches.match(req)
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if (response) {
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return response
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}
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// for routes, serve the /index.html file from the most recent
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// assets cache
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if (routes.find(route => route.pattern.test(url.pathname))) {
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let response = await caches.match('/index.html')
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if (response) {
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return response
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}
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}
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}
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// for everything else, go network-only
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return fetch(req)
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})())
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})
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self.addEventListener('push', event => {
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event.waitUntil((async () => {
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const data = event.data.json()
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const { origin } = new URL(data.icon)
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try {
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const notification = await get(`${origin}/api/v1/notifications/${data.notification_id}`, {
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'Authorization': `Bearer ${data.access_token}`
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}, { timeout: 2000 })
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await showRichNotification(data, notification)
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} catch (e) {
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await showSimpleNotification(data)
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}
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})())
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})
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async function showSimpleNotification (data) {
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await self.registration.showNotification(data.title, {
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icon: data.icon,
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body: data.body
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})
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}
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async function showRichNotification (data, notification) {
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const { origin } = new URL(data.icon)
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switch (notification.type) {
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case 'follow': {
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await self.registration.showNotification(data.title, {
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icon: data.icon,
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body: data.body,
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tag: notification.id,
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data: {
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url: `${self.location.origin}/accounts/${notification.account.id}`
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}
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})
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break
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}
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case 'mention': {
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const actions = [{
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action: 'favourite',
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title: 'Favourite'
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}]
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if ('reply' in NotificationEvent.prototype) {
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actions.splice(0, 0, {
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action: 'reply',
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type: 'text',
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title: 'Reply'
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})
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}
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if (['public', 'unlisted'].includes(notification.status.visibility)) {
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actions.push({
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action: 'reblog',
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title: 'Boost'
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})
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}
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await self.registration.showNotification(data.title, {
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icon: data.icon,
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body: data.body,
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tag: notification.id,
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data: {
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instance: origin,
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status_id: notification.status.id,
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access_token: data.access_token,
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url: `${self.location.origin}/statuses/${notification.status.id}`
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},
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actions
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})
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break
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}
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case 'reblog': {
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await self.registration.showNotification(data.title, {
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icon: data.icon,
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body: data.body,
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tag: notification.id,
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data: {
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url: `${self.location.origin}/statuses/${notification.status.id}`
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}
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})
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break
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}
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case 'favourite': {
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await self.registration.showNotification(data.title, {
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icon: data.icon,
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body: data.body,
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tag: notification.id,
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data: {
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url: `${self.location.origin}/statuses/${notification.status.id}`
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}
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})
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break
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}
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}
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}
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const cloneNotification = notification => {
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const clone = { }
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// Object.assign() does not work with notifications
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for (let k in notification) {
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clone[k] = notification[k]
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}
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return clone
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}
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const updateNotificationWithoutAction = (notification, action) => {
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const newNotification = cloneNotification(notification)
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newNotification.actions = newNotification.actions.filter(item => item.action !== action)
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return self.registration.showNotification(newNotification.title, newNotification)
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}
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self.addEventListener('notificationclick', event => {
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event.waitUntil((async () => {
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switch (event.action) {
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case 'reply': {
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await post(`${event.notification.data.instance}/api/v1/statuses/`, {
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status: event.reply,
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in_reply_to_id: event.notification.data.status_id
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}, { 'Authorization': `Bearer ${event.notification.data.access_token}` })
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await updateNotificationWithoutAction(event.notification, 'reply')
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break
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}
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case 'reblog': {
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await post(`${event.notification.data.instance}/api/v1/statuses/${event.notification.data.status_id}/reblog`, null, { 'Authorization': `Bearer ${event.notification.data.access_token}` })
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await updateNotificationWithoutAction(event.notification, 'reblog')
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break
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}
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case 'favourite': {
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await post(`${event.notification.data.instance}/api/v1/statuses/${event.notification.data.status_id}/favourite`, null, { 'Authorization': `Bearer ${event.notification.data.access_token}` })
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await updateNotificationWithoutAction(event.notification, 'favourite')
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break
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}
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default: {
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await self.clients.openWindow(event.notification.data.url)
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await event.notification.close()
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break
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}
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}
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})())
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})
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// Copy-paste from ajax.js
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async function get (url, headers, options) {
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return _fetch(url, makeFetchOptions('GET', headers), options)
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}
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async function post (url, body, headers, options) {
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return _putOrPostOrPatch('POST', url, body, headers, options)
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}
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async function _putOrPostOrPatch (method, url, body, headers, options) {
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let fetchOptions = makeFetchOptions(method, headers)
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if (body) {
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if (body instanceof FormData) {
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fetchOptions.body = body
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} else {
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fetchOptions.body = JSON.stringify(body)
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fetchOptions.headers['Content-Type'] = 'application/json'
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}
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}
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return _fetch(url, fetchOptions, options)
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}
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async function _fetch (url, fetchOptions, options) {
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let response
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if (options && options.timeout) {
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response = await fetchWithTimeout(url, fetchOptions, options.timeout)
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} else {
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response = await fetch(url, fetchOptions)
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}
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return throwErrorIfInvalidResponse(response)
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}
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async function throwErrorIfInvalidResponse (response) {
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let json = await response.json()
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if (response.status >= 200 && response.status < 300) {
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return json
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}
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if (json && json.error) {
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throw new Error(response.status + ': ' + json.error)
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}
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throw new Error('Request failed: ' + response.status)
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}
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function fetchWithTimeout (url, fetchOptions, timeout) {
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return new Promise((resolve, reject) => {
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fetch(url, fetchOptions).then(resolve, reject)
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setTimeout(() => reject(new Error(`Timed out after ${timeout / 1000} seconds`)), timeout)
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})
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}
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function makeFetchOptions (method, headers) {
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return {
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method,
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headers: Object.assign(headers || {}, {
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'Accept': 'application/json'
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})
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}
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}
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