import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('博客卡片Demo'),
          backgroundColor: Colors.blue,
          foregroundColor: Colors.white,
        ),
        body: Container(
          decoration: BoxDecoration(
            gradient: LinearGradient(
              begin: Alignment.topLeft,
              end: Alignment.bottomRight,
              colors: [Colors.blue.shade50, Colors.purple.shade50],
            ),
          ),
          child: SingleChildScrollView(
            padding: EdgeInsets.all(16),
            child: Column(
              children: [
                BlogCard(
                  title: 'Flutter开发实战',
                  description: '本文详细介绍了如何使用Flutter开发高性能的跨平台应用，包含最佳实践和性能优化技巧。通过实际案例演示了状态管理、路由导航、网络请求等核心功能的实现方式，帮助开发者快速掌握Flutter开发精髓。',
                  labels: [
                    BlogLabel('精品', Icons.star, Colors.amber),
                    BlogLabel('置顶', Icons.push_pin, Colors.red),
                    BlogLabel('技术', Icons.category, Colors.blue),
                    BlogLabel('2024-01-15', Icons.calendar_today, Colors.green),
                    BlogLabel('2024-01-20', Icons.update, Colors.orange),
                    BlogLabel('2.3k', Icons.remove_red_eye, Colors.purple),
                    BlogLabel('3.2k字', Icons.text_fields, Colors.indigo),
                    BlogLabel('8分钟', Icons.access_time, Colors.brown),
                    BlogLabel('24', Icons.comment, Colors.teal),
                  ],
                ),

                SizedBox(height: 20),

                BlogCard(
                  title: 'Dart语言特性深入解析',
                  description: '深入探讨Dart语言的现代特性，包括空安全、异步编程、扩展方法等高级功能。结合实例讲解如何利用Dart的特性编写更安全、更高效的代码，提升开发效率和代码质量。',
                  labels: [
                    BlogLabel('推荐', Icons.thumb_up, Colors.pink),
                    BlogLabel('编程', Icons.code, Colors.blue),
                    BlogLabel('2024-01-10', Icons.calendar_today, Colors.green),
                    BlogLabel('2024-01-18', Icons.update, Colors.orange),
                    BlogLabel('1.5k', Icons.remove_red_eye, Colors.purple),
                    BlogLabel('2.1k字', Icons.text_fields, Colors.indigo),
                    BlogLabel('6分钟', Icons.access_time, Colors.brown),
                    BlogLabel('18', Icons.comment, Colors.teal),
                  ],
                ),
              ],
            ),
          ),
        )
      ),
      theme: ThemeData(
        fontFamily: 'CustomFont'
      ),
    );
  }
}

class BlogLabel {
  final String text;
  final IconData icon;
  final Color color;

  BlogLabel(this.text, this.icon, this.color);
}

class BlogCard extends StatelessWidget {
  final String title;
  final String description;
  final List<BlogLabel> labels;

  const BlogCard({
    super.key,
    required this.title,
    required this.description,
    required this.labels,
  });

  @override
  Widget build(BuildContext context) {
    return Card(
      elevation: 4,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(16),
      ),
      child: Container(
        width: double.infinity, // 确保宽度对齐
        decoration: BoxDecoration(
          borderRadius: BorderRadius.circular(16),
          gradient: LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: [Colors.white, Colors.grey.shade50],
          ),
        ),
        child: Padding(
          padding: EdgeInsets.all(20),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              // 标题 - 居中
              Text(
                title,
                style: TextStyle(
                  fontSize: 20,
                  fontWeight: FontWeight.bold,
                  color: Colors.blue.shade800,
                ),
                textAlign: TextAlign.center,
                maxLines: 2,
                overflow: TextOverflow.ellipsis,
              ),

              SizedBox(height: 16),

              // 单行标签 - 居中，更小的尺寸
              Container(
                width: double.infinity,
                child: Wrap(
                  spacing: 6,
                  runSpacing: 6,
                  alignment: WrapAlignment.center,
                  children: labels.map((label) {
                    return Container(
                      padding: EdgeInsets.symmetric(horizontal: 8, vertical: 4),
                      decoration: BoxDecoration(
                        color: label.color.withAlpha(30),
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(
                          color: label.color.withAlpha(20),
                          width: 1,
                        ),
                      ),
                      child: Row(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          Icon(label.icon, size: 12, color: label.color),
                          SizedBox(width: 4),
                          Text(
                            label.text,
                            style: TextStyle(
                              fontSize: 10,
                              color: label.color,
                              fontWeight: FontWeight.w500,
                            ),
                          ),
                        ],
                      ),
                    );
                  }).toList(),
                ),
              ),

              SizedBox(height: 16),

              // 分隔线
              Container(
                height: 1,
                width: 80,
                color: Colors.blue.shade200,
              ),

              SizedBox(height: 16),

              // 描述 - 放在下面，大约100字
              Container(
                width: double.infinity,
                child: Text(
                  description,
                  style: TextStyle(
                    fontSize: 14,
                    color: Colors.grey.shade700,
                    height: 1.6,
                  ),
                  textAlign: TextAlign.justify,
                  maxLines: 4,
                  overflow: TextOverflow.ellipsis,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}