Add user notification base code

server/lib/peertube-socket.ts

@@ -0,0 +1,52 @@
+import * as SocketIO from 'socket.io'
+import { authenticateSocket } from '../middlewares'
+import { UserNotificationModel } from '../models/account/user-notification'
+import { logger } from '../helpers/logger'
+import { Server } from 'http'
+
+class PeerTubeSocket {
+
+  private static instance: PeerTubeSocket
+
+  private userNotificationSockets: { [ userId: number ]: SocketIO.Socket } = {}
+
+  private constructor () {}
+
+  init (server: Server) {
+    const io = SocketIO(server)
+
+    io.of('/user-notifications')
+      .use(authenticateSocket)
+      .on('connection', socket => {
+        const userId = socket.handshake.query.user.id
+
+        logger.debug('User %d connected on the notification system.', userId)
+
+        this.userNotificationSockets[userId] = socket
+
+        socket.on('disconnect', () => {
+          logger.debug('User %d disconnected from SocketIO notifications.', userId)
+
+          delete this.userNotificationSockets[userId]
+        })
+      })
+  }
+
+  sendNotification (userId: number, notification: UserNotificationModel) {
+    const socket = this.userNotificationSockets[userId]
+
+    if (!socket) return
+
+    socket.emit('new-notification', notification.toFormattedJSON())
+  }
+
+  static get Instance () {
+    return this.instance || (this.instance = new this())
+  }
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  PeerTubeSocket
+}