Remove service worker code that has never been used

app/javascript/flavours/glitch/service_worker/entry.js

@@ -1,10 +0,0 @@
-import './web_push_notifications';
-
-// Cause a new version of a registered Service Worker to replace an existing one
-// that is already installed, and replace the currently active worker on open pages.
-self.addEventListener('install', function(event) {
-  event.waitUntil(self.skipWaiting());
-});
-self.addEventListener('activate', function(event) {
-  event.waitUntil(self.clients.claim());
-});

app/javascript/flavours/glitch/service_worker/web_push_notifications.js

@@ -1,159 +0,0 @@
-const MAX_NOTIFICATIONS = 5;
-const GROUP_TAG = 'tag';
-
-// Avoid loading intl-messageformat and dealing with locales in the ServiceWorker
-const formatGroupTitle = (message, count) => message.replace('%{count}', count);
-
-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: formatGroupTitle(options.data.message, 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,
-          message: options.data.message,
-        },
-      };
-
-      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 = cloneNotification(notifications[0]);
-
-      group.title = formatGroupTitle(group.data.message, 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 handlePush = (event) => {
-  const options = event.data.json();
-
-  options.body      = options.data.nsfw || options.data.content;
-  options.dir       = options.data.dir;
-  options.image     = options.image || undefined; // Null results in a network request (404)
-  options.timestamp = options.timestamp && new Date(options.timestamp);
-
-  const expandAction = options.data.actions.find(action => action.todo === 'expand');
-
-  if (expandAction) {
-    options.actions          = [expandAction];
-    options.hiddenActions    = options.data.actions.filter(action => action !== expandAction);
-    options.data.hiddenImage = options.image;
-    options.image            = undefined;
-  } else {
-    options.actions = options.data.actions;
-  }
-
-  event.waitUntil(notify(options));
-};
-
-const cloneNotification = (notification) => {
-  const clone = {  };
-
-  for(var k in notification) {
-    clone[k] = notification[k];
-  }
-
-  return clone;
-};
-
-const expandNotification = (notification) => {
-  const nextNotification = cloneNotification(notification);
-
-  nextNotification.body    = notification.data.content;
-  nextNotification.image   = notification.data.hiddenImage;
-  nextNotification.actions = notification.data.actions.filter(action => action.todo !== 'expand');
-
-  return self.registration.showNotification(nextNotification.title, nextNotification);
-};
-
-const makeRequest = (notification, action) =>
-  fetch(action.action, {
-    headers: {
-      'Authorization': `Bearer ${notification.data.access_token}`,
-      'Content-Type': 'application/json',
-    },
-    method: action.method,
-    credentials: 'include',
-  });
-
-const findBestClient = clients => {
-  const focusedClient = clients.find(client => client.focused);
-  const visibleClient = clients.find(client => client.visibilityState === 'visible');
-
-  return focusedClient || visibleClient || clients[0];
-};
-
-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 removeActionFromNotification = (notification, action) => {
-  const actions          = notification.actions.filter(act => act.action !== action.action);
-  const nextNotification = cloneNotification(notification);
-
-  nextNotification.actions = actions;
-
-  return self.registration.showNotification(nextNotification.title, nextNotification);
-};
-
-const handleNotificationClick = (event) => {
-  const reactToNotificationClick = new Promise((resolve, reject) => {
-    if (event.action) {
-      const action = event.notification.data.actions.find(({ action }) => action === event.action);
-
-      if (action.todo === 'expand') {
-        resolve(expandNotification(event.notification));
-      } else if (action.todo === 'request') {
-        resolve(makeRequest(event.notification, action)
-          .then(() => removeActionFromNotification(event.notification, action)));
-      } else {
-        reject(`Unknown action: ${action.todo}`);
-      }
-    } else {
-      event.notification.close();
-      resolve(openUrl(event.notification.data.url));
-    }
-  });
-
-  event.waitUntil(reactToNotificationClick);
-};
-
-self.addEventListener('push', handlePush);
-self.addEventListener('notificationclick', handleNotificationClick);