import 'package:flutter/material.dart';

/// 状态卡片组件
class StatusCard extends StatelessWidget {
  final String title;
  final String value;
  final IconData icon;
  final Color? iconColor;
  final Color? backgroundColor;
  final String? subtitle;
  final VoidCallback? onTap;

  const StatusCard({
    super.key,
    required this.title,
    required this.value,
    required this.icon,
    this.iconColor,
    this.backgroundColor,
    this.subtitle,
    this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    
    return Card(
      color: backgroundColor ?? theme.cardColor,
      elevation: 2,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(12),
      ),
      child: InkWell(
        onTap: onTap,
        borderRadius: BorderRadius.circular(12),
        child: Padding(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            mainAxisSize: MainAxisSize.min,
            children: [
              Row(
                children: [
                  Icon(
                    icon,
                    color: iconColor ?? theme.colorScheme.primary,
                    size: 24,
                  ),
                  const SizedBox(width: 8),
                  Text(
                    title,
                    style: theme.textTheme.bodyMedium?.copyWith(
                      color: theme.colorScheme.onSurfaceVariant,
                    ),
                  ),
                ],
              ),
              const SizedBox(height: 12),
              Text(
                value,
                style: theme.textTheme.headlineSmall?.copyWith(
                  fontWeight: FontWeight.bold,
                ),
              ),
              if (subtitle != null) ...[
                const SizedBox(height: 4),
                Text(
                  subtitle!,
                  style: theme.textTheme.bodySmall?.copyWith(
                    color: theme.colorScheme.onSurfaceVariant,
                  ),
                ),
              ],
            ],
          ),
        ),
      ),
    );
  }
}

/// 网络状态指示器
class NetworkStatusIndicator extends StatelessWidget {
  final bool isConnected;
  final int latency;

  const NetworkStatusIndicator({
    super.key,
    required this.isConnected,
    required this.latency,
  });

  @override
  Widget build(BuildContext context) {
    final color = _getStatusColor();
    final text = _getStatusText();

    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
      decoration: BoxDecoration(
        color: color.withValues(alpha: 0.1),
        borderRadius: BorderRadius.circular(20),
        border: Border.all(color: color.withValues(alpha: 0.3)),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Container(
            width: 8,
            height: 8,
            decoration: BoxDecoration(
              color: color,
              shape: BoxShape.circle,
            ),
          ),
          const SizedBox(width: 8),
          Text(
            text,
            style: TextStyle(
              color: color,
              fontWeight: FontWeight.w500,
            ),
          ),
        ],
      ),
    );
  }

  Color _getStatusColor() {
    if (!isConnected) return Colors.red;
    if (latency < 0) return Colors.grey;
    if (latency > 200) return Colors.orange;
    if (latency > 100) return Colors.yellow.shade700;
    return Colors.green;
  }

  String _getStatusText() {
    if (!isConnected) return '离线';
    if (latency < 0) return '检测中';
    return '${latency}ms';
  }
}