Refactor admin lists and migrate legacy archive/filemanager controllers

autoload/admin/Controllers/FilemanagerController.php

@@ -0,0 +1,46 @@
+<?php
+namespace admin\Controllers;
+
+class FilemanagerController
+{
+    private const RFM_KEY_TTL = 1200; // 20 min
+    private const FILEMANAGER_DIALOG_PATH = '/libraries/filemanager-9.14.2/dialog.php';
+
+    public function draw(): string
+    {
+        $akey = $this->ensureFilemanagerAccessKey();
+        $filemanagerUrl = $this->buildFilemanagerUrl($akey);
+
+        return \Tpl::view('filemanager/filemanager', [
+            'filemanager_url' => $filemanagerUrl,
+        ]);
+    }
+
+    private function ensureFilemanagerAccessKey(): string
+    {
+        $expiresAt = (int)($_SESSION['rfm_akey_expires'] ?? 0);
+        $existingKey = trim((string)($_SESSION['rfm_akey'] ?? ''));
+
+        if ($existingKey !== '' && $expiresAt >= time()) {
+            $_SESSION['rfm_akey_expires'] = time() + self::RFM_KEY_TTL;
+            return $existingKey;
+        }
+
+        try {
+            $newKey = bin2hex(random_bytes(16));
+        } catch (\Throwable $e) {
+            $newKey = sha1(uniqid('rfm', true));
+        }
+
+        $_SESSION['rfm_akey'] = $newKey;
+        $_SESSION['rfm_akey_expires'] = time() + self::RFM_KEY_TTL;
+
+        return $newKey;
+    }
+
+    private function buildFilemanagerUrl(string $akey): string
+    {
+        return self::FILEMANAGER_DIALOG_PATH . '?akey=' . rawurlencode($akey);
+    }
+}
+