@Component({
    selector: 'login',
    templateUrl: './login.component.html',
    styleUrls: ['./login.component.css']
})

@NgModule({
providers:[AuthenticationService]
})
export class LoginComponent implements OnInit {
    public user: User;
    public isUserAuthenticated = false;
    // For testing we are going to use Dummy Configuration.
    // Actual data will come from Rest Service


    private dummyConfiguration:Object={
        "user":"dummy",
        "component":[{
                  "name":"CustomerComponent",
                  "access":"ENABLED"
        },
        {
              "name":"InvoicingComponent",
                  "access":"HIDDEN"

        }

        ]
    };

    constructor(private router: Router,private authenticationService : AuthenticationService) {
        this.user = new User();
    }

    login() {
        this.isUserAuthenticated = true;
        this.authenticationService.saveInSession(this.dummyConfiguration);
        this.router.navigate(['/site', {}]);
    }

    ngOnInit() {
    }
}

export class User {
    public email: string;
    public password: string;
}

@Component({
  selector: 'site',
  templateUrl: './site.component.html',
  styleUrls: ['./site.component.css']
})
export class SiteComponent extends SuperParentComponent{
  constructor(private router: Router, private authenticationService: AuthenticationService) {
    super();
    this.validateSession(router,authenticationService);
  }
}

export class SuperParentComponent {

constructor(){
}
    validateSession( router: Router,  authenticationService: AuthenticationService) {
        if (!authenticationService.isUserLoggedIn()) {
            router.navigate(['/login', {}]);
        }
    }
}

export class AuthenticationService {


        @SessionStorage() public userConfiguration: Object;

        isAuthentic(component: string):boolean {
            if (this.isComponentAllowed(component)){
                return true;
            }
        }

        public getUserConfiguration():Object {
            return this.userConfiguration;
        }

        saveInSession(data: Object) {
            this.userConfiguration = data;
        }

        isUserLoggedIn():boolean{
            if(this.userConfiguration==null){
                return false;
            }
            return true;
        }

        isComponentAllowed(component:string){
           var result:Array<Object>;
           if(this.userConfiguration=={}){
               return false;
           }
           if(this.userConfiguration.hasOwnProperty("component")){
               result=this.userConfiguration["component"];
               for (var i = 0; i < result.length; i++) {
                   var currentComponent:Object=result[i];
                if (currentComponent["name"] ==component && currentComponent["access"]== AccessType.ENABLED) {
                     return true;
                }
           }
        }
        return false;


    }

    }

     enum AccessType {
         ENABLED=<any>"ENABLED",
         HIDDEN=<any>"HIDDEN"


     }