client/src/app/core/notification/user-notification-socket.service.ts

   1 import { Injectable } from '@angular/core'
   2 import { environment } from '../../../environments/environment'
   3 import { UserNotification as UserNotificationServer } from '../../../../../shared'
   4 import { Subject } from 'rxjs'
   5 import * as io from 'socket.io-client'
   6 import { AuthService } from '../auth'
   7
   8 export type NotificationEvent = 'new' | 'read' | 'read-all'
   9
  10 @Injectable()
  11 export class UserNotificationSocket {
  12   private notificationSubject = new Subject<{ type: NotificationEvent, notification?: UserNotificationServer }>()
  13
  14   private socket: SocketIOClient.Socket
  15
  16   constructor (
  17     private auth: AuthService
  18   ) {}
  19
  20   dispatch (type: NotificationEvent, notification?: UserNotificationServer) {
  21     this.notificationSubject.next({ type, notification })
  22   }
  23
  24   getMyNotificationsSocket () {
  25     const socket = this.getSocket()
  26
  27     socket.on('new-notification', (n: UserNotificationServer) => this.dispatch('new', n))
  28
  29     return this.notificationSubject.asObservable()
  30   }
  31
  32   private getSocket () {
  33     if (this.socket) return this.socket
  34
  35     this.socket = io(environment.apiUrl + '/user-notifications', {
  36       query: { accessToken: this.auth.getAccessToken() }
  37     })
  38
  39     return this.socket
  40   }
  41 }