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

<?php

namespace App\Module\Cleanup\AdminControllers\Actions;

use App\Module\Cleanup\Models\CleanupBackup;
use Dcat\Admin\Actions\RowAction;
use Dcat\Admin\Actions\Response;
use Illuminate\Http\Request;

/**
 * 查看备份Action
 * 
 * 用于查看备份的详细信息
 */
class ViewBackupAction extends RowAction
{
    /**
     * 按钮标题
     */
    protected $title = '查看备份';

    /**
     * 处理请求
     */
    public function handle(Request $request)
    {
        try {
            $backupId = $this->getKey();
            
            $backup = CleanupBackup::with(['files', 'sqlBackups'])->find($backupId);
            
            if (!$backup) {
                return $this->response()
                    ->error('备份不存在');
            }
            
            $html = '<div class="row">';
            
            // 基本信息
            $html .= '<div class="col-md-6">';
            $html .= '<h5>基本信息</h5>';
            $html .= '<ul class="list-unstyled">';
            $html .= '<li><strong>备份名称：</strong>' . $backup->backup_name . '</li>';
            $html .= '<li><strong>备份类型：</strong>' . $this->getBackupTypeName($backup->backup_type) . '</li>';
            $html .= '<li><strong>压缩类型：</strong>' . $this->getCompressionTypeName($backup->compression_type) . '</li>';
            $html .= '<li><strong>备份状态：</strong>' . $this->getBackupStatusBadge($backup->backup_status) . '</li>';
            $html .= '<li><strong>表数量：</strong>' . number_format($backup->tables_count) . '</li>';
            $html .= '<li><strong>记录数量：</strong>' . number_format($backup->records_count) . '</li>';
            $html .= '</ul>';
            $html .= '</div>';
            
            // 大小信息
            $html .= '<div class="col-md-6">';
            $html .= '<h5>大小信息</h5>';
            $html .= '<ul class="list-unstyled">';
            $html .= '<li><strong>备份大小：</strong>' . $this->formatBytes($backup->backup_size) . '</li>';
            $html .= '<li><strong>原始大小：</strong>' . $this->formatBytes($backup->original_size) . '</li>';
            
            if ($backup->original_size > 0) {
                $compressionRatio = (1 - $backup->backup_size / $backup->original_size) * 100;
                $html .= '<li><strong>压缩率：</strong>' . number_format($compressionRatio, 2) . '%</li>';
            }
            
            $html .= '<li><strong>开始时间：</strong>' . $backup->started_at . '</li>';
            $html .= '<li><strong>完成时间：</strong>' . $backup->completed_at . '</li>';
            
            if ($backup->expires_at) {
                $html .= '<li><strong>过期时间：</strong>' . $backup->expires_at . '</li>';
            }
            
            $html .= '</ul>';
            $html .= '</div>';
            $html .= '</div>';
            
            // 备份文件列表
            if ($backup->files->isNotEmpty()) {
                $html .= '<div class="mt-4">';
                $html .= '<h5>备份文件</h5>';
                $html .= '<div class="table-responsive">';
                $html .= '<table class="table table-sm table-striped">';
                $html .= '<thead><tr><th>表名</th><th>文件名</th><th>文件大小</th><th>类型</th><th>压缩</th></tr></thead>';
                $html .= '<tbody>';
                
                foreach ($backup->files as $file) {
                    $html .= '<tr>';
                    $html .= '<td>' . $file->table_name . '</td>';
                    $html .= '<td>' . $file->file_name . '</td>';
                    $html .= '<td>' . $this->formatBytes($file->file_size) . '</td>';
                    $html .= '<td>' . $this->getBackupTypeName($file->backup_type) . '</td>';
                    $html .= '<td>' . $this->getCompressionTypeName($file->compression_type) . '</td>';
                    $html .= '</tr>';
                }
                
                $html .= '</tbody></table>';
                $html .= '</div>';
                $html .= '</div>';
            }
            
            // SQL备份内容
            if ($backup->sqlBackups->isNotEmpty()) {
                $html .= '<div class="mt-4">';
                $html .= '<h5>SQL备份内容</h5>';
                $html .= '<div class="table-responsive">';
                $html .= '<table class="table table-sm table-striped">';
                $html .= '<thead><tr><th>表名</th><th>记录数量</th><th>内容大小</th><th>创建时间</th></tr></thead>';
                $html .= '<tbody>';
                
                foreach ($backup->sqlBackups as $sqlBackup) {
                    $html .= '<tr>';
                    $html .= '<td>' . $sqlBackup->table_name . '</td>';
                    $html .= '<td>' . number_format($sqlBackup->records_count) . '</td>';
                    $html .= '<td>' . $this->formatBytes($sqlBackup->content_size) . '</td>';
                    $html .= '<td>' . $sqlBackup->created_at . '</td>';
                    $html .= '</tr>';
                }
                
                $html .= '</tbody></table>';
                $html .= '</div>';
                $html .= '</div>';
            }
            
            return $this->response()
                ->success('备份详情')
                ->detail($html);
                
        } catch (\Exception $e) {
            return $this->response()
                ->error('查看失败：' . $e->getMessage());
        }
    }

    /**
     * 获取备份类型名称
     */
    private function getBackupTypeName($type)
    {
        $types = [1 => 'SQL', 2 => 'JSON', 3 => 'CSV'];
        return $types[$type] ?? '未知';
    }

    /**
     * 获取压缩类型名称
     */
    private function getCompressionTypeName($type)
    {
        $types = [1 => '无压缩', 2 => 'GZIP', 3 => 'ZIP'];
        return $types[$type] ?? '未知';
    }

    /**
     * 获取备份状态标签
     */
    private function getBackupStatusBadge($status)
    {
        $badges = [
            1 => '<span class="badge badge-info">进行中</span>',
            2 => '<span class="badge badge-success">已完成</span>',
            3 => '<span class="badge badge-danger">已失败</span>',
        ];
        return $badges[$status] ?? '<span class="badge badge-secondary">未知</span>';
    }

    /**
     * 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];
    }

    /**
     * 渲染按钮
     */
    public function render()
    {
        return <<<HTML
<a href="javascript:void(0);" class="btn btn-info btn-xs" data-action="{$this->getHandleRoute()}">
    <i class="fa fa-eye"></i> {$this->title}
</a>
HTML;
    }
}