[Library]: Add guard to check if there is community or user is Portal Administrator.

git-svn-id: https://svn.driver.research-infrastructures.eu/driver/dnet40/modules/uoa-services-library/trunk/ng-openaire-library/src/app@56516 d315682c-612b-4755-9ff5-7f18f6832af3

connect/communityGuard/isCommunityOrAdmin.ts

@@ -0,0 +1,36 @@
+import { Injectable } from '@angular/core';
+import {
+  Router,
+  CanActivate,
+  ActivatedRouteSnapshot,
+  RouterStateSnapshot,
+  CanLoad, Route, UrlSegment
+} from '@angular/router';
+import {Observable} from 'rxjs';
+
+import {ConnectHelper} from '../connectHelper';
+import {Session} from '../../login/utils/helper.class';
+
+@Injectable()
+export class IsCommunityOrAdmin implements CanActivate {
+
+  constructor(private router: Router) {
+  }
+
+  check(community: string): Observable<boolean> | boolean {
+    if(Session.isLoggedIn() && Session.isPortalAdministrator()) {
+      return true;
+    }
+    else if (community && community !== 'undefined') {
+      return true;
+    } else {
+      this.router.navigate(['errorcommunity']);
+      return false;
+    }
+  }
+
+  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | boolean {
+    return this.check(route.queryParams['communityId']);
+  }
+
+}