feat(analytics): enable analytic

src/app/@core/utils/analytics.service.ts

@@ -0,0 +1,25 @@
+import {Injectable} from '@angular/core';
+import {Router, NavigationEnd} from '@angular/router';
+import {Location} from '@angular/common';
+
+import {filter} from 'rxjs/operator/filter';
+
+declare const ga: any;
+
+@Injectable()
+export class AnalyticsService {
+  private _enabled: boolean;
+
+  constructor(private _location: Location, private _router: Router) {
+    this._enabled = window.location.href.indexOf('akveo.com') >= 0;
+  }
+
+  trackPageViews() {
+    if (this._enabled) {
+      filter.call(this._router.events, (event) => event instanceof NavigationEnd)
+        .subscribe(() => {
+          ga('send', {hitType: 'pageview', page: this._location.path()});
+        });
+    }
+  }
+}