constructor(
     private router: Router,
     private adalService: AdalService
 ){
     this.adalService.handleWindowCallback();
     if (this.adalService.userInfo.isAuthenticated){
         this.router.navigate(['home']);
     }
 }

 constructor(
     private router: Router,
     private adalService: AdalService
 ) {
     console.log('Entering welcome');        
     this.adalService.handleWindowCallback();
     if (this.adalService.userInfo.isAuthenticated) {
         this.router.navigate(['Home']);
     }
 }

 constructor(
     private adalService: AdalService,
     private secretService: SecretService
 ) {
     this.adalService.init(this.secretService.adalConfig);
 }

 public logOut(){
   this.adalService.logOut();
 }

 public logIn(){
     this.adalService.login();
 }