import 'dart:async';

import 'package:flutter/widgets.dart';
import 'package:ff_bloc/ff_bloc.dart';

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

@immutable
abstract class ${upperName}Event implements FFBlocEvent<${upperName}State, ${upperName}Bloc> {}

/// Initial Event with load data
class Load${upperName}Event extends ${upperName}Event {
  Load${upperName}Event({required this.id});
  final String? id;
  
  static const String _name = 'Load${upperName}Event';

  @override
  String toString() => _name;

  @override
  Stream<${upperName}State> applyAsync({required ${upperName}Bloc bloc}) async* {
    // set loading true for show loading
    yield bloc.state.copyWithoutError(isLoading: true);
    // fetch data
    final result = await bloc.provider.fetchAsync(id);
    // set data to state
    yield bloc.state.copyWithoutError(
      isLoading: false,
      data: ${upperName}ViewModel(items: result),
    );
  }
}


class Add${upperName}Event extends ${upperName}Event {
  static const String _name = 'Add${upperName}Event';

  @override
  String toString() => _name;

  @override
  Stream<${upperName}State> applyAsync({required ${upperName}Bloc bloc}) async* {
    yield bloc.state.copyWithoutError(isLoading: true);
    final result = await bloc.provider.addMore(bloc.state.data?.items);
    yield bloc.state.copyWithoutError(
      isLoading: false,
      data: ${upperName}ViewModel(items: result),
    );
  }
}

class ErrorYouAwesomeEvent extends YouAwesomeEvent {
  static const String _name = 'ErrorYouAwesomeEvent';

  @override
  String toString() => _name;

  @override
  Stream<YouAwesomeState> applyAsync({required YouAwesomeBloc bloc}) async* {
    throw Exception('Test error');
  }
}

class Clear${upperName}Event extends ${upperName}Event {
  static const String _name = 'Clear${upperName}Event';

  @override
  String toString() => _name;

  @override
  Stream<${upperName}State> applyAsync({required ${upperName}Bloc bloc}) async* {
    yield bloc.state.copyWithoutError(isLoading: true);
    yield bloc.state.copyWithoutData(
      isLoading: false,
    );
  }
}