gistfile1.txt

/**
 * import {checkIfSessionActive} from '.../session.service';
 * @CanActivate(checkIfSessionActive)
 */
export function checkIfSessionActive(next: ComponentInstruction, prev) : Promise<boolean> {
    let injector = Injector.resolveAndCreate([SessionService,
                                              ApiClientService,
                                              TokenService,
                                              LoggerService,
                                              LocalStorageService,
                                              UtilQueryStringService]);

    let sessionService = injector.get(SessionService);

    console.log('STEP 1a');

    let fnPromise = function(resolve,reject) {

          console.log('STEP 1b');

          let isSessionActivePromise = sessionService.isSessionActive();
          console.log('STEP 1c');


          let fnHandleFail = function() {
              reject();

              /*
              let injector = Injector.resolveAndCreate([Router]);
              let router = injector.get(Router);
              router.navigate( ['Login']);
              */
              window.location.assign('http://localhost:7320/dist/dev/login');
          };

          isSessionActivePromise.then((isActive:boolean) => {
            if(isActive) {
              resolve(true);
            } else {
              fnHandleFail();
            }
          })
          .catch((error) => {
            /**
             * @TODO We might be more indiscriminate about this.
             * The session check can fail for server errors or lack of connectivity.
             */
            fnHandleFail();
          });



    };
    return new Promise<boolean>(fnPromise);
}