import {Injectable} from '@angular/core';
import {
  Router,
  CanActivate,
  ActivatedRouteSnapshot,
  RouterStateSnapshot,
  CanLoad,
  Route,
  UrlSegment
} from '@angular/router';
import {Observable} from 'rxjs';
import {Session} from './utils/helper.class';
import {LoginErrorCodes} from './utils/guardHelper.class';

@Injectable()
export class ClaimsCuratorGuard implements CanActivate {

  constructor(private router: Router) {
  }

  check(path: string): boolean {
    let loggedIn = false;
    let isAuthorized = false;
    let errorCode = LoginErrorCodes.NOT_LOGIN;

    if (Session.isLoggedIn()) {
      loggedIn = true;
      if (Session.isClaimsCurator() || Session.isPortalAdministrator()) {
        isAuthorized = true;
      } else {
        errorCode = LoginErrorCodes.NOT_ADMIN;
      }
    }
    if (!loggedIn || !isAuthorized) {
      this.router.navigate(['/user-info'], {
        queryParams: {
          'errorCode': errorCode,
          'redirectUrl': path
        }
      });
    }
    return loggedIn && isAuthorized;
  }

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

}