D-Net

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

import { Router,CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot} from '@angular/router';

import {Observable}       from 'rxjs/Observable';

import {Session} from './utils/helper.class';

import {ErrorCodes} from './utils/guardHelper.class';

@Injectable()

export class LoginGuard implements CanActivate {

  constructor(private router: Router) {}

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

    var user;

    var loggedIn = false;

    var errorCode = ErrorCodes.NOT_LOGGIN;

    if(Session.isLoggedIn()){

      loggedIn = true;

      if(!Session.isValidAndRemove()){

        loggedIn = false;

        errorCode = ErrorCodes.NOT_VALID;

      }

    }else{

      errorCode = ErrorCodes.NOT_LOGGIN;

    }

    if(!loggedIn){

      // this.guardHelper.redirect("/user-info",errorCode,state.url);

      this.router.navigate(['/user-info'], { queryParams: { "errorCode": errorCode, "redirectUrl":  state.url } });

      return false;

    }else{

      return true;

    }

  }

}