import 'package:flutter/material.dart';

/// 错误状态视图，提供重试按钮。
class ErrorView extends StatelessWidget {
  const ErrorView({
    super.key,
    this.message = '加载失败，请重试',
    this.onRetry,
  });

  final String message;
  final VoidCallback? onRetry;

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Padding(
        padding: const EdgeInsets.all(32),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(
              Icons.error_outline,
              size: 56,
              color: Theme.of(context).colorScheme.error,
            ),
            const SizedBox(height: 16),
            Text(
              message,
              style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                    color: Theme.of(context).colorScheme.onSurfaceVariant,
                  ),
              textAlign: TextAlign.center,
            ),
            if (onRetry != null) ...[
              const SizedBox(height: 24),
              FilledButton.tonal(
                onPressed: onRetry,
                child: const Text('重试'),
              ),
            ],
          ],
        ),
      ),
    );
  }
}