Lifecycle events

final off = MicroSurvey.on(InsitoEvent.responseSubmitted, (payload) {
  analytics.track('survey_response_submitted', {
    'surveyId': payload.surveyId,
    'responseId': payload.responseId,
  });
});

// when you no longer need the listener:
off();

class InsitoEventPayload {
  final String? apiUrl;
  final String? surveyId;
  final String? responseId;
  final int? queueLength;
  final String? screenName;
  final Map<String, int>? screens;
  final String? reason;
  final String? where;
  final String? message;
}

final subscriptions = <void Function()>[
  MicroSurvey.on(InsitoEvent.surveyShown, (p) {
    analytics.track('insito_survey_shown', {'surveyId': p.surveyId});
  }),
  MicroSurvey.on(InsitoEvent.responseSubmitted, (p) {
    analytics.track('insito_response_submitted', {'surveyId': p.surveyId});
  }),
];

// on teardown:
for (final off in subscriptions) {
  off();
}

if (kDebugMode) {
  MicroSurvey.on(InsitoEvent.error, (p) {
    debugPrint('[insito:${p.where}] ${p.message}');
  });
}

MicroSurvey.on(InsitoEvent.responseSubmitted, (_) {
  messengerKey.currentState?.showSnackBar(
    const SnackBar(content: Text('Thanks for the feedback!')),
  );
});

MicroSurvey.on(InsitoEvent.responseSubmitted, (p) {
  analytics.track('survey_submitted_online', {'surveyId': p.surveyId});
});
MicroSurvey.on(InsitoEvent.responseQueued, (p) {
  analytics.track('survey_submitted_offline', {'queueLength': p.queueLength});
});

class _MyWidgetState extends State<MyWidget> {
  late final void Function() _off;

  @override
  void initState() {
    super.initState();
    _off = MicroSurvey.on(InsitoEvent.surveyShown, _track);
  }

  @override
  void dispose() {
    _off(); // clean teardown
    super.dispose();
  }
}