Add notifications in the client

1 files changed, 64 insertions, 0 deletions

diff --git a/client/src/app/menu/avatar-notification.component.ts b/client/src/app/menu/avatar-notification.component.ts
new file mode 100644
index 000000000..60e090726
--- /dev/null
+++ b/client/src/app/menu/avatar-notification.component.ts
@@ -0,0 +1,64 @@
+import { Component, Input, OnDestroy, OnInit, ViewChild } from '@angular/core'
+import { User } from '../shared/users/user.model'
+import { UserNotificationService } from '@app/shared/users/user-notification.service'
+import { Subscription } from 'rxjs'
+import { Notifier } from '@app/core'
+import { NgbPopover } from '@ng-bootstrap/ng-bootstrap'
+import { NavigationEnd, Router } from '@angular/router'
+import { filter } from 'rxjs/operators'
+
+@Component({
+  selector: 'my-avatar-notification',
+  templateUrl: './avatar-notification.component.html',
+  styleUrls: [ './avatar-notification.component.scss' ]
+})
+export class AvatarNotificationComponent implements OnInit, OnDestroy {
+  @ViewChild('popover') popover: NgbPopover
+  @Input() user: User
+
+  unreadNotifications = 0
+
+  private notificationSub: Subscription
+  private routeSub: Subscription
+
+  constructor (
+    private userNotificationService: UserNotificationService,
+    private notifier: Notifier,
+    private router: Router
+  ) {}
+
+  ngOnInit () {
+    this.userNotificationService.countUnreadNotifications()
+      .subscribe(
+        result => {
+          this.unreadNotifications = Math.min(result, 99) // Limit number to 99
+          this.subscribeToNotifications()
+        },
+
+        err => this.notifier.error(err.message)
+      )
+
+    this.routeSub = this.router.events
+                        .pipe(filter(event => event instanceof NavigationEnd))
+                        .subscribe(() => this.closePopover())
+  }
+
+  ngOnDestroy () {
+    if (this.notificationSub) this.notificationSub.unsubscribe()
+    if (this.routeSub) this.routeSub.unsubscribe()
+  }
+
+  closePopover () {
+    this.popover.close()
+  }
+
+  private subscribeToNotifications () {
+    this.notificationSub = this.userNotificationService.getMyNotificationsSocket()
+                               .subscribe(data => {
+                                 if (data.type === 'new') return this.unreadNotifications++
+                                 if (data.type === 'read') return this.unreadNotifications--
+                                 if (data.type === 'read-all') return this.unreadNotifications = 0
+                               })
+  }
+
+}