export const routes: Routes = [
  { path: '', component: LoginComponent },
  { path: 'login', component: LoginComponent },
  { path: 'home', component: HomeComponent, canActivate: [AuthGuard] },
  { path: '**', component: LoginComponent },
];

@Injectable()
export class AuthGuard implements CanActivate {
response: ResponseInterface;

constructor(private router: Router, private localStorage: LocalStorageService,
 private services: MyService) { }
canActivate() {

let token = String(this.localStorage.get('token'));
if (token != null) {
  this.services.keepAlive(token).subscribe(
    response => this.response = response,
    error => alert(error),
    () => {
      if (this.response.status == 'OK') {
        console.log("response OK");
        return true;
      } else {
        console.log("response KO");
        this.router.navigate(['/login']);
        return false;
      }
    }
  )

} else {
  this.router.navigate(['/login']);
  return false;
}