import 'dart:async';
import 'dart:developer' as developer;

import 'package:bloc/bloc.dart';
import 'package:${appName}${relative}/index.dart';

class ${upperName}Bloc extends Bloc<${upperName}Event, ${upperName}State> {
  // todo: check singleton for logic in project
  // use GetIt for DI in projct
  static final ${upperName}Bloc _${privateName}BlocSingleton = ${upperName}Bloc._internal();
  factory ${upperName}Bloc() {
    return _${privateName}BlocSingleton;
  }
  
  ${upperName}Bloc._internal(): super(Un${upperName}State(0)){
    on<${upperName}Event>((event, emit) {
      return emit.forEach<${upperName}State>(
        event.applyAsync(currentState: state, bloc: this),
        onData: (state) => state,
        onError: (error, stackTrace) {
          developer.log('$error', name: '${upperName}Bloc', error: error, stackTrace: stackTrace);
          return Error${upperName}State(0, error.toString());
        },
      );
    });
  }
  
  @override
  Future<void> close() async{
    // dispose objects
    await super.close();
  }

  @override
  ${upperName}State get initialState => Un${upperName}State(0);

}