Added notification readed status

Change-Id: I1ba84a34988d53888977d38aba32d7a1a6aa8282
diff --git a/src/app/core/header/header.ts b/src/app/core/header/header.ts
index 06c4984..140abff 100644
--- a/src/app/core/header/header.ts
+++ b/src/app/core/header/header.ts
@@ -3,10 +3,15 @@
 import {IStoreService} from '../../datasources/stores/slices.store';
 import {IWSEvent} from '../../datasources/websocket/global';
 
+interface INotification extends IWSEvent {
+  viewed?: boolean;
+}
+
 class HeaderController {
   static $inject = ['SynchronizerStore'];
   public title: string;
-  public notifications: IWSEvent[] = [];
+  public notifications: INotification[] = [];
+  public newNotifications: INotification[] = [];
 
   constructor(
     private syncStore: IStoreService
@@ -16,11 +21,22 @@
     this.syncStore.query()
       .subscribe(
         (event: IWSEvent) => {
-          console.log(event);
-          this.notifications.push(event);
+          this.notifications.unshift(event);
+          this.newNotifications = this.getNewNotifications(this.notifications);
         }
       );
   }
+
+  public viewNotification = (notification: INotification) => {
+    notification.viewed = true;
+    this.newNotifications = this.getNewNotifications(this.notifications);
+  };
+
+  private getNewNotifications = (notifications: INotification[]) => {
+    return this.notifications.filter((n: INotification) => {
+      return !n.viewed;
+    });
+  };
 }
 
 export const xosHeader: angular.IComponentOptions = {