SB-Notification library

Background

The notification feature is being used by both mobile and the portal. The same boilerplate code is there in both, so to reduce the boilerplate code “sb-notification“ library is created.

Implementation

export interface SbNotificationService {
   getNotifications(): Promise<NotificationFeedEntry<Notification>;
  
   handleNotification(notificationData: EventNotification): void;
  
   deleteNotification(notificationData: EventNotification): Promise<boolean>;
  
   clearAllNotifications(notificationListData: EventNotificationList): Promise<boolean>;
}

The library requires NotificationService implementation to handle all the notification functionality.
It's the client’s responsibility to provide all the data required by the “sb-notiifcation” library to perform an action on the notifications.

Methods

getNotifications: Required to render the notification list
handleNotification: Required to handle the notification
deleteNotification: Required to delete a notification
clearAllNotifications: Required to clear all the notifications

Usage

Create a class that implements NotificationService from the notification library.

@Injectable({
  providedIn: 'root'
})
export class NotificationServiceImpl implements NotificationService {

  getNotifications(): Promise<NotificationFeedEntry<Notification>[]> {
   // Business logic to get the notification
  }

  handleNotification(notificationData: any) {
  // Business logic to handle notifications
  }

  deleteNotification(notificationData): Promise<boolean> {
  // Business logic to delete a notification
  }

  clearAllNotifications(notificationListData: any): Promise<boolean> {
  // Business logic to clear all notifications
  }
}

In the app module import the NotificationModule and declare NotificationServiceImpl as a provider like following

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
   ...
    NotificationModule
   ...
  ],
  entryComponents: [AppComponent],
  bootstrap: [AppComponent],
  providers: [
    ...
    { provide: 'NOTIFICATION_SERVICE', useClass: NotificationServiceImpl }
    ...
  ]
})