import 'dart:async';
import 'package:trackoffical_app/logger.dart';
import 'package:trackoffical_app/model/closeable.dart';
import 'plug.dart';
import 'package:meta/meta.dart';
import 'package:trackoffical_app/service/service.dart';

abstract class GameInstance extends Closeable{
  GameInstance(){
    _state=GameInstanceState.uninitialized;
  }

  Future<void> init()async{

    await onInit();
    for(final one in plugs){
      await one.init();
    }
    _state=GameInstanceState.initialized;
    debug('[$runtimeType] initialized');
  }
  Future<void> closeUsedByManager()async{
    _state=GameInstanceState.closing;
    close();
    for(final one in plugs){
      one.close();
    }
    await join();
    _state=GameInstanceState.closed;
  }


  @protected
  Future<void> onInit();

  void Function() stop=(){};
  int get id =>-1;
  final loadProgress = 0.0.obs;

  @protected
  final List<Plug> plugs=[];
  final _stateController = StreamController<GameInstanceState>.broadcast();
  var _stateLast = GameInstanceState.uninitialized;
  Stream<GameInstanceState> get stateStream =>_stateController.stream;
  GameInstanceState get state=>_stateLast;
  set _state(GameInstanceState v){
    _stateLast=v;
    _stateController.add(v);
  }
}
enum GameInstanceState{
  uninitialized,
  initialized,
  closing,
  closed,
}