D-Net

import {take, tap} from 'rxjs/operators';

import {Injectable} from '@angular/core';

import {

  Router,

  CanActivate,

  ActivatedRouteSnapshot,

  RouterStateSnapshot, UrlTree, CanActivateChild,

} from '@angular/router';

import {Observable, Subscription} from 'rxjs';

import {CommunityService} from '../community/community.service';

import {properties} from "../../../../environments/environment";

@Injectable()

export class ConnectCommunityGuard implements CanActivate, CanActivateChild {

  sub: Subscription = null;

  constructor(private router: Router,

              private communityService: CommunityService) {

  }

  check(community: string, url: string): Observable<boolean> | boolean {

    return this.communityService.isCommunityType(community).pipe(take(1), tap(isCommunity => {

      if (!isCommunity) {

        this.router.navigate(['/error'], {queryParams: {'page': url}});

      }

    }));

  }

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {

    let community = route.params['community'];

    return community && this.check(community, state.url);

  }

  canActivateChild(childRoute: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {

    let community = childRoute.params['community'];

    return community && this.check(community, state.url);

  }

}