openaire-library/login/loginGuard.guard.ts

import {Injectable} from '@angular/core';
import {
  Router,
  CanActivate,
  ActivatedRouteSnapshot,
  RouterStateSnapshot,
  Route,
  CanLoad,
  UrlSegment
} from '@angular/router';
import {Observable} from 'rxjs';
import {Session} from './utils/helper.class';
import {LoginErrorCodes} from './utils/guardHelper.class';
import {filter, map, mergeMap} from "rxjs/operators";
import {CommunityService} from "../connect/community/community.service";
import {UserManagementService} from "../services/user-management.service";
import {EnvironmentSpecificService} from "../utils/properties/environment-specific.service";

@Injectable()
export class LoginGuard implements CanActivate {

  constructor(private router: Router,
              private userManagementService: UserManagementService,
              private propertiesService: EnvironmentSpecificService) {
  }

  check(path: string): Observable<boolean> |boolean {
    const loggedIn = this.propertiesService.subscribeEnvironment().pipe(mergeMap(properties => {
      return this.userManagementService.isLoggedIn(properties['userInfoUrl']).pipe(map( isLoggedIn => {
        return isLoggedIn;
      }));
    }));
    loggedIn.pipe(filter( isLoggedIn => !isLoggedIn)).subscribe( () => {
      this.router.navigate(['/user-info'], {
        queryParams: {
          'errorCode': LoginErrorCodes.NOT_LOGIN,
          'redirectUrl': path
        }
      });
    });
    return loggedIn;
  }

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