import IntlMessageFormat from 'intl-messageformat'; import locales from './web_push_locales'; const MAX_NOTIFICATIONS = 5; const GROUP_TAG = 'tag'; const notify = options => self.registration.getNotifications().then(notifications => { if (notifications.length >= MAX_NOTIFICATIONS) { // Reached the maximum number of notifications, proceed with grouping const group = { title: formatMessage('notifications.group', options.data.preferred_locale, { count: notifications.length + 1 }), body: notifications.sort((n1, n2) => n1.timestamp < n2.timestamp).map(notification => notification.title).join('\n'), badge: '/badge.png', icon: '/android-chrome-192x192.png', tag: GROUP_TAG, data: { url: (new URL('/web/notifications', self.location)).href, count: notifications.length + 1, preferred_locale: options.data.preferred_locale, }, }; notifications.forEach(notification => notification.close()); return self.registration.showNotification(group.title, group); } else if (notifications.length === 1 && notifications[0].tag === GROUP_TAG) { // Already grouped, proceed with appending the notification to the group const group = { ...notifications[0] }; group.title = formatMessage('notifications.group', options.data.preferred_locale, { count: group.data.count + 1 }); group.body = `${options.title}\n${group.body}`; group.data = { ...group.data, count: group.data.count + 1 }; return self.registration.showNotification(group.title, group); } return self.registration.showNotification(options.title, options); }); const fetchFromApi = (path, method, accessToken) => { const url = (new URL(path, self.location)).href; return fetch(url, { headers: { 'Authorization': `Bearer ${accessToken}`, 'Content-Type': 'application/json', }, method: method, credentials: 'include', }).then(res => { if (res.ok) { return res; } else { throw new Error(res.status); } }).then(res => res.json()); }; const formatMessage = (messageId, locale, values = {}) => (new IntlMessageFormat(locales[locale][messageId], locale)).format(values); const htmlToPlainText = html => html.replace(//g, '\n').replace(/<\/p>

/g, '\n\n').replace(/<[^>]*>/g, ''); const handlePush = (event) => { const { access_token, notification_id, preferred_locale, title, body, icon } = event.data.json(); // Placeholder until more information can be loaded event.waitUntil( notify({ title, body, icon, tag: notification_id, timestamp: new Date(), badge: '/badge.png', data: { access_token, preferred_locale, url: '/web/notifications' }, }).then(() => fetchFromApi(`/api/v1/notifications/${notification_id}`, 'get', access_token)).then(notification => { const options = {}; options.title = formatMessage(`notification.${notification.type}`, preferred_locale, { name: notification.account.display_name.length > 0 ? notification.account.display_name : notification.account.username }); options.body = notification.status && htmlToPlainText(notification.status.content); options.icon = notification.account.avatar_static; options.timestamp = notification.created_at && new Date(notification.created_at); options.tag = notification.id; options.badge = '/badge.png'; options.image = notification.status && notification.status.media_attachments.length > 0 && notification.status.media_attachments[0].preview_url || undefined; options.data = { access_token, preferred_locale, id: notification.status ? notification.status.id : notification.account.id, url: notification.status ? `/web/statuses/${notification.status.id}` : `/web/accounts/${notification.account.id}` }; if (notification.status && notification.status.sensitive) { options.data.hiddenBody = htmlToPlainText(notification.status.content); options.data.hiddenImage = notification.status.media_attachments.length > 0 && notification.status.media_attachments[0].preview_url; options.body = notification.status.spoiler_text; options.image = undefined; options.actions = [actionExpand(preferred_locale)]; } else if (notification.status) { options.actions = [actionReblog(preferred_locale), actionFavourite(preferred_locale)]; } return notify(options); }) ); }; const actionExpand = preferred_locale => ({ action: 'expand', icon: '/web-push-icon_expand.png', title: formatMessage('status.show_more', preferred_locale), }); const actionReblog = preferred_locale => ({ action: 'reblog', icon: '/web-push-icon_reblog.png', title: formatMessage('status.reblog', preferred_locale), }); const actionFavourite = preferred_locale => ({ action: 'favourite', icon: '/web-push-icon_favourite.png', title: formatMessage('status.favourite', preferred_locale), }); const findBestClient = clients => { const focusedClient = clients.find(client => client.focused); const visibleClient = clients.find(client => client.visibilityState === 'visible'); return focusedClient || visibleClient || clients[0]; }; const expandNotification = notification => { const newNotification = { ...notification }; newNotification.body = newNotification.data.hiddenBody; newNotification.image = newNotification.data.hiddenImage; newNotification.actions = [actionReblog(notification.data.preferred_locale), actionFavourite(notification.data.preferred_locale)]; return self.registration.showNotification(newNotification.title, newNotification); }; const removeActionFromNotification = (notification, action) => { const newNotification = { ...notification }; newNotification.actions = newNotification.actions.filter(item => item.action !== action); return self.registration.showNotification(newNotification.title, newNotification); }; const openUrl = url => self.clients.matchAll({ type: 'window' }).then(clientList => { if (clientList.length !== 0) { const webClients = clientList.filter(client => /\/web\//.test(client.url)); if (webClients.length !== 0) { const client = findBestClient(webClients); const { pathname } = new URL(url); if (pathname.startsWith('/web/')) { return client.focus().then(client => client.postMessage({ type: 'navigate', path: pathname.slice('/web/'.length - 1), })); } } else if ('navigate' in clientList[0]) { // Chrome 42-48 does not support navigate const client = findBestClient(clientList); return client.navigate(url).then(client => client.focus()); } } return self.clients.openWindow(url); }); const handleNotificationClick = (event) => { const reactToNotificationClick = new Promise((resolve, reject) => { if (event.action) { if (event.action === 'expand') { resolve(expandNotification(event.notification)); } else if (event.action === 'reblog') { const { data } = event.notification; resolve(fetchFromApi(`/api/v1/statuses/${data.id}/reblog`, 'post', data.access_token).then(() => removeActionFromNotification(event.notification, 'reblog'))); } else if (event.action === 'favourite') { const { data } = event.notification; resolve(fetchFromApi(`/api/v1/statuses/${data.id}/favourite`, 'post', data.access_token).then(() => removeActionFromNotification(event.notification, 'favourite'))); } else { reject(`Unknown action: ${event.action}`); } } else { event.notification.close(); resolve(openUrl(event.notification.data.url)); } }); event.waitUntil(reactToNotificationClick); }; self.addEventListener('push', handlePush); self.addEventListener('notificationclick', handleNotificationClick);