import 'package:flutter/material.dart';

/// 粗进度条存储指示器
class ThickStorageBar extends StatelessWidget {
  final int used;
  final int total;
  final double percentage;

  const ThickStorageBar({
    super.key,
    required this.used,
    required this.total,
    required this.percentage,
  });

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final colorScheme = theme.colorScheme;

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        ClipRRect(
          borderRadius: BorderRadius.circular(6),
          child: LinearProgressIndicator(
            value: total > 0 ? (used / total).clamp(0.0, 1.0) : 0,
            minHeight: 10,
            backgroundColor: colorScheme.primary.withValues(alpha: 0.12),
            valueColor: AlwaysStoppedAnimation<Color>(colorScheme.primary),
            borderRadius: BorderRadius.circular(6),
          ),
        ),
        const SizedBox(height: 8),
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Text(
              '已使用 ${_formatBytes(used)}',
              style: theme.textTheme.bodySmall?.copyWith(
                color: theme.hintColor,
              ),
            ),
            Text(
              '共 ${_formatBytes(total)}',
              style: theme.textTheme.bodySmall?.copyWith(
                color: theme.hintColor,
              ),
            ),
          ],
        ),
      ],
    );
  }

  String _formatBytes(int bytes) {
    if (bytes < 1024) return '$bytes B';
    if (bytes < 1024 * 1024) return '${(bytes / 1024).toStringAsFixed(1)} KB';
    if (bytes < 1024 * 1024 * 1024) {
      return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
    }
    return '${(bytes / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
  }
}