import 'package:aman_kassa_flutter/redux/actions/main_actions.dart';
import 'package:aman_kassa_flutter/redux/actions/user_actions.dart';
import 'package:aman_kassa_flutter/redux/reducers/main_reducer.dart';
import 'package:aman_kassa_flutter/redux/reducers/user_reducer.dart';
import 'package:aman_kassa_flutter/redux/state/main_state.dart';
import 'package:aman_kassa_flutter/redux/state/user_state.dart';
import 'package:meta/meta.dart';
import 'package:redux/redux.dart';
import 'package:redux_thunk/redux_thunk.dart';


//reducer context
AppState appReducer(AppState state, dynamic action) {

  if (action is SetUserStateAction) { /** UserAction **/
    final nextUserState = userReducer(state.userState, action);
    return state.copyWith(userState: nextUserState);
  } else if(action is SetMainStateAction) { /** MainAction **/
    final nextMainState = mainReducer(state.mainState, action);
    return state.copyWith(mainState: nextMainState);
  }
  return state;
}

//Main  State
@immutable
class AppState {
  final UserState userState;
  final MainState mainState;
  AppState({
    @required this.userState,
    @required this.mainState,
  });

  //stable work
  AppState copyWith({
    UserState userState,
    MainState mainState,
  }) {
    return AppState(
      userState: userState ?? this.userState,
      mainState: mainState ?? this.mainState,
    );
  }
}

class Redux {
  static Store<AppState> _store;

  static Store<AppState> get store {
    if (_store == null) {
      throw Exception("store is not initialized");
    } else {
      return _store;
    }
  }

  //initial context
  static Future<void> init() async {
    final userStateInitial = UserState.initial();
    final mainStateInitial = MainState.initial();

    _store = Store<AppState>(
      appReducer,
      middleware: [thunkMiddleware],
      initialState: AppState(userState: userStateInitial, mainState: mainStateInitial),
    );
  }
}