onNavigation method

Implementation

@override
void onNavigation(NavigationResolver resolver, StackRouter router) async {
  // final authBloc = await GetIt.instance.get<AuthenticationBasicBloc>();

  // the navigation is paused until resolver.next() is called with either
  // true to resume/continue navigation or false to abort navigation
  if (authBloc.state.authenticated && !authBloc.state.authenticationData!.expired) {
    // if user is authenticated we continue
    return resolver.next(true);

    // lets check if the session has expired
  } else if (authBloc.state.authenticated && authBloc.state.authenticationData!.expired) {
    // let's try to force a fetch user so it triggers a refresh session if necessary
    authBloc.fetchUser();
    // if the user configured the refreshApiEndpoint, lets wait for it to return a refreshed session or failure
    if (authBloc.config.refreshTokenAPIendpoint != null || authBloc.config.customRefreshTokenCallback != null) {
      final result = await authBloc.eventsReplay
          .where(
            (event) {
              return event is RefreshTokenSuccess || event is RefreshTokenFailure;
            },
          )
          .map((event) {
            return true;
          })
          .timeout(const Duration(seconds: 10))
          // lets give it a moment so the bloc/service set the new session on state
          .delay(const Duration(milliseconds: 200))
          // do nothing on error we still be checking if session have changed
          .onErrorReturn(false)
          .first;
      if ((authBloc.state.authenticationData?.expired ?? true)) {
        // lets try to refresh
        resolver.next(false);
        return onUnauthorized?.call(router);
      } else {
        return resolver.next(true);
      }
    } else {
      resolver.next(false);
      return onUnauthorized?.call(router);
    }
  } else {
    resolver.next(false);
    // we redirect the user to our login page
    return onUnauthorized?.call(router);
  }
}