feature-next-arch/lib/features/main_container/presentation/main_wrapper.dart

import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:google_nav_bar/google_nav_bar.dart';
import 'package:maibu_satabot_v2/features/main_container/presentation/cubit/tab_config_cubit.dart';
import 'package:maibu_satabot_v2/features/main_container/domain/tab_config.dart';
import 'package:maibu_satabot_v2/features/home/presentation/pages/home_page.dart';
import 'package:maibu_satabot_v2/features/ai/presentation/pages/ai_page.dart';
import 'package:maibu_satabot_v2/features/waring_center/presentation/pages/warning_center_page.dart';
import 'package:maibu_satabot_v2/features/my/presentation/pages/my_page.dart';

class MainWrapper extends StatefulWidget {
  const MainWrapper({super.key});

  @override
  State<MainWrapper> createState() => _MainWrapperState();
}

class _MainWrapperState extends State<MainWrapper> {
  int _currentIndex = 0;
  final PageController _pageController = PageController();

  @override
  void dispose() {
    _pageController.dispose();
    super.dispose();
  }

  IconData _getIconData(String iconName) {
    switch (iconName) {
      case 'grid_view_rounded':
        return Icons.grid_view_rounded;
      case 'auto_awesome_rounded':
        return Icons.auto_awesome_rounded;
      case 'warning_amber_rounded':
        return Icons.warning_amber_rounded;
      case 'person_rounded':
        return Icons.person_rounded;
      default:
        return Icons.home_rounded;
    }
  }

  Widget _buildCurrentPage(TabConfigItem tab) {
    switch (tab.id) {
      case 'home':
        return const HomePage();
      case 'ai':
        return const AiPage();
      case 'warning':
        return const WarningCenterPage();
      case 'my':
        return const MyPage();
      default:
        return const HomePage();
    }
  }

  @override
  Widget build(BuildContext context) {
    return BlocBuilder<TabConfigCubit, TabConfigState>(
      builder: (context, state) {
        if (state is! TabConfigLoaded) {
          return const Scaffold(body: Center(child: CircularProgressIndicator()));
        }

        final config = state.config;
        final enabledItems = config.enabledItems;

        if (enabledItems.isEmpty) {
          return const Scaffold(
            body: Center(
              child: Text('请至少启用一个 Tab'),
            ),
          );
        }

        if (_currentIndex >= enabledItems.length) {
          _currentIndex = 0;
        }

        return Scaffold(
          extendBody: true,
          body: PageView(
            controller: _pageController,
            physics: const NeverScrollableScrollPhysics(),
            onPageChanged: (index) {
              setState(() {
                _currentIndex = index;
              });
            },
            children: enabledItems.map((tab) => _buildCurrentPage(tab)).toList(),
          ),
          bottomNavigationBar: Container(
            margin: const EdgeInsets.fromLTRB(20, 0, 20, 10),
            decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(32),
              boxShadow: [
                BoxShadow(
                  color: Colors.black.withOpacity(0.12),
                  blurRadius: 30,
                  offset: const Offset(0, 10),
                ),
              ],
            ),
            child: ClipRRect(
              borderRadius: BorderRadius.circular(32),
              child: BackdropFilter(
                filter: ImageFilter.blur(sigmaX: 16, sigmaY: 16),
                child: Container(
                  decoration: BoxDecoration(
                    color: Colors.white.withOpacity(0.4),
                    borderRadius: BorderRadius.circular(32),
                    border: Border.all(
                      color: Colors.black.withOpacity(0.08),
                      width: 0.5,
                    ),
                  ),
                  child: SafeArea(
                    top: false,
                    child: Padding(
                      padding: const EdgeInsets.symmetric(
                        horizontal: 10,
                        vertical: 8,
                      ),
                      child: GNav(
                        rippleColor: Colors.transparent,
                        hoverColor: Colors.transparent,
                        gap: 10,
                        activeColor: Colors.white,
                        tabBackgroundColor: Colors.black,
                        color: Colors.black87,
                        iconSize: 24,
                        padding: const EdgeInsets.symmetric(
                          horizontal: 18,
                          vertical: 10,
                        ),
                        duration: const Duration(milliseconds: 300),
                        selectedIndex: _currentIndex,
                        onTabChange: (index) {
                          setState(() {
                            _currentIndex = index;
                          });
                          _pageController.jumpToPage(index);
                        },
                        tabs: enabledItems.map((item) {
                          return GButton(
                            icon: _getIconData(item.icon),
                            text: item.name,
                          );
                        }).toList(),
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ),
        );
      },
    );
  }
}