feature-tenant/lib/features/main_container/presentation/cubit/tab_config_cubit.dart

import 'package:flutter/foundation.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'dart:convert';
import '../../domain/tab_config.dart';

abstract class TabConfigState {}

class TabConfigInitial extends TabConfigState {}

class TabConfigLoaded extends TabConfigState {
  final TabConfig config;
  final int selectedIndex;

  TabConfigLoaded(this.config, {this.selectedIndex = 0});
}

class TabConfigCubit extends Cubit<TabConfigState> {
  final SharedPreferences _prefs;
  static const String _configKey = 'tab_config';

  TabConfigCubit(this._prefs) : super(TabConfigInitial()) {
    _loadConfig();
  }

  void _loadConfig() {
    debugPrint('🔍 [TabConfigCubit] _loadConfig 被调用');
    // 直接使用代码中的默认配置，不持久化
    final defaultConfig = TabConfig.defaultConfig();
    debugPrint('🔍 [TabConfigCubit] 默认配置 Tab 数量: ${defaultConfig.items.length}');
    debugPrint('🔍 [TabConfigCubit] 启用的 Tab: ${defaultConfig.enabledItems.map((e) => e.id).toList()}');
    emit(TabConfigLoaded(defaultConfig));
    debugPrint('✅ [TabConfigCubit] 状态已 emit');
  }

  void _saveConfig(TabConfig config) {
    try {
      final configList = config.items.map((item) => {
        'id': item.id,
        'name': item.name,
        'nameEn': item.nameEn,
        'icon': item.icon,
        'isEnabled': item.isEnabled,
        'order': item.order,
      }).toList();
      _prefs.setString(_configKey, jsonEncode(configList));
    } catch (e) {
      print('保存 Tab 配置失败: $e');
    }
  }

  void toggleTab(String itemId) {
    if (state is TabConfigLoaded) {
      final currentState = state as TabConfigLoaded;
      final newConfig = currentState.config.toggleItem(itemId);
      
      // 不保存，直接更新状态
      emit(TabConfigLoaded(newConfig, selectedIndex: currentState.selectedIndex));
    }
  }

  void selectTab(int index) {
    if (state is TabConfigLoaded) {
      final currentState = state as TabConfigLoaded;
      final enabledTabs = currentState.config.enabledItems;
      
      // 确保索引在有效范围内
      if (index >= 0 && index < enabledTabs.length) {
        emit(TabConfigLoaded(currentState.config, selectedIndex: index));
      }
    }
  }

  void resetToDefault() {
    final defaultConfig = TabConfig.defaultConfig();
    emit(TabConfigLoaded(defaultConfig));
  }

  TabConfig? getConfig() {
    if (state is TabConfigLoaded) {
      return (state as TabConfigLoaded).config;
    }
    return null;
  }
}