import 'dart:isolate';

import 'package:flutter_background_service/flutter_background_service.dart';

class ServiceInterface {
  final ReceivePort? receivePort;
  final ServiceInstance? service;

  ServiceInterface({this.receivePort, this.service})
      : assert(receivePort != null || service != null);

  Stream<Map<String, dynamic>?> on(String method) {
    if (service != null) {
      return service!.on(method);
    }

    return receivePort!
        .where((event) => event['method'] == method)
        .map((event) => (event as Map?)?.cast<String, dynamic>());
  }
}