openaire-library/connect/communityGuard/isCommunity.guard.ts

import { Injectable } from '@angular/core';
import {
  ActivatedRoute,
  Router,
  CanActivate,
  ActivatedRouteSnapshot,
  RouterStateSnapshot,
  CanLoad, Route
} from '@angular/router';
import {Observable}       from 'rxjs/Observable';
import 'rxjs/add/operator/filter';

@Injectable()
export class IsCommunity implements CanActivate, CanLoad {

  constructor(private router: Router,
              private route: ActivatedRoute) {}

  check(): Observable<boolean> | boolean {
    let community = this.route.queryParams["communityId"];
    if(community && community!="undefined"){
      return true;
    }else{
      this.router.navigate(['errorcommunity']);
    }
    return false;
  }

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | boolean {
    return this.check();
  }

  canLoad(route: Route): Observable<boolean> | Promise<boolean> | boolean {
    return this.check();
  }
}