dockerfluxodecaixapro/app/Controllers/SystemController.php

<?php

namespace App\Controllers;

use Kernel\View;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Modules\Auth\Models\User;

use Illuminate\Database\Capsule\Manager as DB;

class SystemController extends BaseAdminController
{
    private $logPath;
    private $cachePath;

    public function __construct(View $view)
    {
        parent::__construct($view);
        $this->logPath = dirname(__DIR__, 2) . '/logs';
        $this->cachePath = dirname(__DIR__, 2) . '/cache';
    }

    /**
     * Display system information.
     *
     * @param Request $request
     * @return Response
     */
    public function info(Request $request): Response
    {
        $user = $this->getCurrentUser();
        if (!$user || !$user->isSuperAdmin()) {
            return new Response($this->view->render('components/alerts.twig', [
                'type' => 'danger',
                'message' => 'Access denied.'
            ]), 403);
        }

        $dbVersion = 'Unknown';
        try {
            $pdo = DB::connection()->getPdo();
            $dbVersion = $pdo->getAttribute(\PDO::ATTR_SERVER_VERSION);
        } catch (\Exception $e) {
            $dbVersion = 'Error: ' . $e->getMessage();
        }

        $info = [
            'app' => [
                'name' => 'SysCMS',
                'version' => '1.0.0', // Should be from config or const
                'env' => getenv('APP_ENV') ?: 'production',
                'debug' => getenv('APP_DEBUG') ?: false,
            ],
            'system' => [
                'os' => php_uname('s') . ' ' . php_uname('r'),
                'hostname' => gethostname(),
                'server_software' => $_SERVER['SERVER_SOFTWARE'] ?? 'Unknown',
                'timezone' => date_default_timezone_get(),
            ],
            'php' => [
                'version' => phpversion(),
                'sapi' => php_sapi_name(),
                'memory_limit' => ini_get('memory_limit'),
                'max_execution_time' => ini_get('max_execution_time') . 's',
                'upload_max_filesize' => ini_get('upload_max_filesize'),
                'post_max_size' => ini_get('post_max_size'),
                'extensions' => get_loaded_extensions(),
            ],
            'database' => [
                'driver' => DB::connection()->getDriverName(),
                'version' => $dbVersion,
                'database' => DB::connection()->getDatabaseName(),
            ],
            'disk' => [
                'total' => $this->formatBytes(disk_total_space('.')),
                'free' => $this->formatBytes(disk_free_space('.')),
                'used' => $this->formatBytes(disk_total_space('.') - disk_free_space('.')),
            ]
        ];

        return $this->renderAdminView('system/info.twig', [
            'page_title' => 'System Information',
            'info' => $info
        ]);
    }

    /**
     * Display PHP Info.
     *
     * @param Request $request
     * @return Response
     */
    public function phpInfo(Request $request): Response
    {
        $user = $this->getCurrentUser();
        if (!$user || !$user->isSuperAdmin()) {
             return new Response('Access denied', 403);
        }

        ob_start();
        phpinfo();
        $phpinfo = ob_get_clean();

        // Extract body content to embed cleanly if desired, or just output raw.
        // For admin panel consistency, usually raw in a new tab is easiest, 
        // but embedding provides better UX.
        // Let's strip body tags to embed.
        
        $phpinfo = preg_replace('%^.*<body>(.*)</body>.*$%ms', '$1', $phpinfo);
        
        return $this->renderAdminView('system/phpinfo.twig', [
            'page_title' => 'PHP Info',
            'phpinfo' => $phpinfo
        ]);
    }

    /**
     * List all log files.
     *
     * @param Request $request
     * @return Response
     */
    public function logsIndex(Request $request): Response
    {
        $user = $this->getCurrentUser();
        if (!$user || !$user->isSuperAdmin()) {
            return new Response($this->view->render('components/alerts.twig', [
                'type' => 'danger',
                'message' => 'Access denied.'
            ]), 403);
        }

        $files = [];
        if (is_dir($this->logPath)) {
            $files = glob($this->logPath . '/*.log');
        }
        
        // Sort by modification time desc
        usort($files, function($a, $b) {
            return filemtime($b) - filemtime($a);
        });

        $logs = [];
        foreach ($files as $file) {
            $logs[] = [
                'name' => basename($file),
                'size' => $this->formatBytes(filesize($file)),
                'modified' => date('Y-m-d H:i:s', filemtime($file))
            ];
        }

        return $this->renderAdminView('logs/index.twig', [
            'page_title' => 'System Logs',
            'logs' => $logs
        ]);
    }

    /**
     * Show log file content.
     *
     * @param Request $request
     * @return Response
     */
    public function logsShow(Request $request): Response
    {
        $user = $this->getCurrentUser();
        if (!$user || !$user->isSuperAdmin()) {
            return new Response($this->view->render('components/alerts.twig', [
                'type' => 'danger',
                'message' => 'Access denied.'
            ]), 403);
        }

        $filename = $request->query->get('file');
        if (!$filename) {
            return new RedirectResponse(url('admin/logs'));
        }

        // Security check: prevent directory traversal
        if (strpos($filename, '..') !== false || strpos($filename, '/') !== false || strpos($filename, '\\') !== false) {
             return new Response('Invalid filename', 400);
        }

        $filePath = $this->logPath . '/' . $filename;
        if (!file_exists($filePath)) {
            return new Response('File not found', 404);
        }

        // Limit file size read to avoid memory issues (e.g., 5MB)
        if (filesize($filePath) > 5 * 1024 * 1024) {
             // Read only last 500 lines if file is too big
             $content = $this->tailCustom($filePath, 500);
             $content = "File too large, showing last 500 lines:\n\n" . $content;
        } else {
             $content = file_get_contents($filePath);
        }
        
        return $this->renderAdminView('logs/show.twig', [
            'page_title' => 'Log: ' . $filename,
            'filename' => $filename,
            'content' => $content
        ]);
    }

    /**
     * Clear system cache.
     *
     * @param Request $request
     * @return Response
     */
    public function clearCache(Request $request): Response
    {
        $user = $this->getCurrentUser();
        if (!$user || !$user->isSuperAdmin()) {
            return new Response($this->view->render('components/alerts.twig', [
                'type' => 'danger',
                'message' => 'Access denied.'
            ]), 403);
        }

        $deletedCount = 0;
        
        // Clear file cache
        if (is_dir($this->cachePath)) {
            $files = new \RecursiveIteratorIterator(
                new \RecursiveDirectoryIterator($this->cachePath, \RecursiveDirectoryIterator::SKIP_DOTS),
                \RecursiveIteratorIterator::CHILD_FIRST
            );

            foreach ($files as $fileinfo) {
                // Skip .gitignore
                if ($fileinfo->getFilename() === '.gitignore') {
                    continue;
                }

                $todo = ($fileinfo->isDir() ? 'rmdir' : 'unlink');
                if (@$todo($fileinfo->getRealPath())) {
                    if ($todo === 'unlink') {
                        $deletedCount++;
                    }
                }
            }
        }

        // Clear OpCache
        $opcacheCleared = false;
        if (function_exists('opcache_reset')) {
            $opcacheCleared = opcache_reset();
        }

        // Add a success flash message (if flash system exists, otherwise just redirect with query param)
        // Since we don't have a flash message system clearly defined in context, let's use query param
        
        return new RedirectResponse(url('dashboard?cache_cleared=1&deleted=' . $deletedCount . '&opcache=' . ($opcacheCleared ? 1 : 0)));
    }

    private function formatBytes($bytes, $precision = 2) { 
        $units = array('B', 'KB', 'MB', 'GB', 'TB'); 
    
        $bytes = max($bytes, 0); 
        $pow = floor(($bytes ? log($bytes) : 0) / log(1024)); 
        $pow = min($pow, count($units) - 1); 
    
        $bytes /= pow(1024, $pow);
    
        return round($bytes, $precision) . ' ' . $units[$pow]; 
    } 

    /**
     * Slightly modified tail function
     */
    private function tailCustom($filepath, $lines = 1) {
        $f = @fopen($filepath, "rb");
        if ($f === false) return false;
        
        $buffer = 4096;
        fseek($f, -1, SEEK_END);
        
        if (fread($f, 1) != "\n") $lines -= 1;
        
        $output = '';
        $chunk = '';
        
        while (ftell($f) > 0 && $lines >= 0) {
            $seek = min(ftell($f), $buffer);
            fseek($f, -$seek, SEEK_CUR);
            $chunk = fread($f, $seek);
            $output = $chunk . $output;
            fseek($f, -mb_strlen($chunk, '8bit'), SEEK_CUR);
            $lines -= substr_count($chunk, "\n");
        }
        
        while ($lines++ < 0) {
            $output = substr($output, strpos($output, "\n") + 1);
        }
        
        fclose($f);
        return $output;
    }
}