kknongchang_2506/app/Module/Cleanup/AdminControllers/Actions/BatchDeleteBackupAction.php

<?php

namespace App\Module\Cleanup\AdminControllers\Actions;

use App\Module\Cleanup\Services\CleanupService;
use Dcat\Admin\Grid\BatchAction;
use Dcat\Admin\Actions\Response;
use Illuminate\Http\Request;

/**
 * 批量删除备份Action
 * 
 * 用于批量删除备份记录和文件
 */
class BatchDeleteBackupAction extends BatchAction
{
    /**
     * 按钮标题
     */
    protected $title = '批量删除';

    /**
     * 处理请求
     */
    public function handle(Request $request)
    {
        try {
            // 获取选中的ID
            $ids = $this->getKey();
            
            if (empty($ids)) {
                return $this->response()->error('请选择要删除的备份');
            }
            
            $deleteFiles = $request->input('delete_files', true);
            $successCount = 0;
            $failCount = 0;
            $totalFreedSpace = 0;
            $errors = [];
            
            foreach ($ids as $backupId) {
                try {
                    $result = CleanupService::deleteBackup($backupId, $deleteFiles);
                    if ($result['success']) {
                        $successCount++;
                        $totalFreedSpace += $result['data']['freed_space_bytes'] ?? 0;
                    } else {
                        $failCount++;
                        $errors[] = "备份 {$backupId}: " . $result['message'];
                    }
                } catch (\Exception $e) {
                    $failCount++;
                    $errors[] = "备份 {$backupId}: " . $e->getMessage();
                }
            }
            
            $message = "成功删除 {$successCount} 个备份";
            if ($failCount > 0) {
                $message .= "，失败 {$failCount} 个";
            }
            
            if ($totalFreedSpace > 0) {
                $freedSpace = $this->formatBytes($totalFreedSpace);
                $message .= "，释放空间 {$freedSpace}";
            }
            
            $response = $this->response()->success($message)->refresh();
            
            if (!empty($errors)) {
                $errorDetail = implode('<br>', array_slice($errors, 0, 5));
                if (count($errors) > 5) {
                    $errorDetail .= '<br>...还有 ' . (count($errors) - 5) . ' 个错误';
                }
                $response->detail($errorDetail);
            }
            
            return $response;
                
        } catch (\Exception $e) {
            return $this->response()
                ->error('批量删除失败：' . $e->getMessage());
        }
    }

    /**
     * 确认对话框
     */
    public function confirm()
    {
        return [
            '确认批量删除备份？',
            '⚠️ 删除后无法恢复，请谨慎操作！',
            [
                'delete_files' => [
                    'type' => 'checkbox',
                    'label' => '同时删除备份文件',
                    'checked' => true,
                    'help' => '取消勾选则只删除记录，保留文件',
                ]
            ]
        ];
    }

    /**
     * 格式化字节大小
     */
    private function formatBytes($bytes)
    {
        if ($bytes == 0) return '0 B';
        
        $units = ['B', 'KB', 'MB', 'GB', 'TB'];
        $base = log($bytes, 1024);
        $index = floor($base);
        
        if ($index >= count($units)) {
            $index = count($units) - 1;
        }
        
        $size = round(pow(1024, $base - $index), 2);
        return $size . ' ' . $units[$index];
    }
}