import 'package:flutter/material.dart';

/// 空状态视图组件
class EmptyView extends StatelessWidget {
  final String? message;
  final String? imagePath;
  final IconData? icon;
  final Color? iconColor;
  final double? iconSize;
  final Widget? action;
  final EdgeInsets? padding;

  const EmptyView({
    super.key,
    this.message,
    this.imagePath,
    this.icon,
    this.iconColor,
    this.iconSize,
    this.action,
    this.padding,
  });

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: padding ?? const EdgeInsets.all(24.0),
      child: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            // 图标或图片
            if (imagePath != null)
              Image.asset(
                imagePath!,
                width: 120,
                height: 120,
              )
            else if (icon != null)
              Icon(
                icon,
                size: iconSize ?? 64,
                color: iconColor ?? Theme.of(context).colorScheme.onSurface.withOpacity(0.4),
              )
            else
              Icon(
                Icons.inbox_outlined,
                size: iconSize ?? 64,
                color: Theme.of(context).colorScheme.onSurface.withOpacity(0.4),
              ),
            
            const SizedBox(height: 16),
            
            // 提示文字
            if (message != null)
              Text(
                message!,
                style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                  color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
                ),
                textAlign: TextAlign.center,
              )
            else
              Text(
                '暂无数据',
                style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                  color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
                ),
                textAlign: TextAlign.center,
              ),
            
            // 操作按钮
            if (action != null) ...[
              const SizedBox(height: 24),
              action!,
            ],
          ],
        ),
      ),
    );
  }
}