Navius/frontend/lib/main.dart

import 'package:flutter/material.dart';
import 'models/nav_item.dart';
import 'models/category.dart';
import 'data/mock_data.dart';
import 'package:web/web.dart' as web;
import 'data/nav_data.dart';
import 'theme/app_theme.dart';
void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Navius 导航',
      theme: AppTheme.lightTheme,
      home: NaviusHomePage(),
    );
  }
}

class NaviusHomePage extends StatelessWidget {
  const NaviusHomePage({super.key});

  @override
  Widget build(BuildContext context) {
    // 获取分类数据
    final categories = MockData.getCategories();

    return Scaffold(
      appBar: PreferredSize(
        preferredSize: const Size.fromHeight(120),
        child: Container(
          decoration: BoxDecoration(
            gradient: AppTheme.appBarGradient,
            borderRadius: const BorderRadius.only(
              bottomLeft: Radius.circular(30),
              bottomRight: Radius.circular(30),
            ),
          ),
          child: SafeArea(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                // 标题
                const Text(
                  'Navius 导航',
                  style: TextStyle(
                    fontSize: 28,
                    fontWeight: FontWeight.bold,
                    color: Colors.white,
                    letterSpacing: 1.5,
                  ),
                ),
                const SizedBox(height: 4),
                Text(
                  '${categories.length} 个分类 · ${_getTotalEntries(categories)} 个导航',
                  style: const TextStyle(
                    fontSize: 14,
                    color: Colors.white70,
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
      body: ListView.builder(
        padding: const EdgeInsets.all(16),
        itemCount: categories.length,
        itemBuilder: (context, index) {
          final category = categories[index];
          return CategorySection(category: category);
        },
      ),
    );
  }
  // 计算总导航数
  static int _getTotalEntries(List<Category> categories) {
    int total = 0;
    for (var category in categories) {
      total += category.entries.length;
    }
    return total;
  }
}

// 分类区块组件
class CategorySection extends StatelessWidget {
  final Category category;

  const CategorySection({super.key, required this.category});

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children:  [
        // 分类标题（美化版）
        Padding(
          padding: const EdgeInsets.symmetric(vertical: 16),
          child: Row(
            children: [
              // 分类名称
              Text(
                category.name,
                style: const TextStyle(
                  fontSize: 20,
                  fontWeight: FontWeight.w700,
                  color: Color(0xFF1E293B),
                  letterSpacing: 0.5,
                ),
              ),
              const SizedBox(width: 12),
              // 条目数量
              Container(
                padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 2),
                decoration: BoxDecoration(
                  color: AppTheme.systemTagColor,
                  borderRadius: BorderRadius.circular(12),
                ),
                child: Text(
                  '${category.entries.length}',
                  style: const TextStyle(
                    fontSize: 12,
                    color: AppTheme.systemTagTextColor,
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ),
              const Spacer(),
              // 系统标签
              if (category.isSystem)
                Container(
                  padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
                  decoration: BoxDecoration(
                    color: AppTheme.systemTagColor,
                    borderRadius: BorderRadius.circular(12),
                  ),
                  child: const Text(
                    '系统分类',
                    style: TextStyle(
                      fontSize: 11,
                      color: AppTheme.systemTagTextColor,
                      fontWeight: FontWeight.w500,
                    ),
                  ),
                ),
            ],
          ),
        ),
        // 导航网格（4列）
        GridView.builder(
          shrinkWrap: true,
          physics: const NeverScrollableScrollPhysics(),
          gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
            crossAxisCount: 4,
            childAspectRatio: 1.0,
            crossAxisSpacing: 16,
            mainAxisSpacing: 16,
          ),
          itemCount: category.entries.length,
          itemBuilder: (context, index) {
            final item = category.entries[index];
            return NavItemCard(item: item);
          },
        ),
        const SizedBox(height: 8),
      ],
    );
  }
}

// 单个导航卡片组件
class NavItemCard extends StatelessWidget {
  final NavItem item;

  const NavItemCard({super.key, required this.item});

  @override
  Widget build(BuildContext context) {
    return Container(
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(16),
        boxShadow: AppTheme.cardShadow,
      ),
      child: InkWell(
        onTap: () {
          web.window.open(item.url, '_blank');
        },
        borderRadius: BorderRadius.circular(16),
        hoverColor: AppTheme.primaryColor.withOpacity(0.05),
        splashColor: AppTheme.primaryColor.withOpacity(0.1),
        child: Padding(
          padding: const EdgeInsets.all(8),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              // 图标（增大）
              Text(
                item.icon,
                style: const TextStyle(fontSize: 36),
              ),
              const SizedBox(height: 10),
              // 标题
              Text(
                item.title,
                style: const TextStyle(
                  fontSize: 14,
                  fontWeight: FontWeight.w500,
                  color: Color(0xFF1E293B),
                ),
                textAlign: TextAlign.center,
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
              ),
              const SizedBox(height: 4),
              // 系统标签（改进样式）
              if (item.isSystem)
                Container(
                  padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
                  decoration: BoxDecoration(
                    color: AppTheme.systemTagColor,
                    borderRadius: BorderRadius.circular(10),
                  ),
                  child: Text(
                    '默认',
                    style: TextStyle(
                      fontSize: 9,
                      color: AppTheme.systemTagTextColor,
                      fontWeight: FontWeight.w600,
                    ),
                  ),
                ),
            ],
          ),
        ),
      ),
    );
  }
}