fix parent pages and teachers and admin

app/Http/Controllers/Api/Reports/FilesController.php

@@ -9,6 +9,8 @@ use App\Services\Files\ExamDraftDownloadNameService;
 use App\Services\Files\FileServeService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Response;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
 
 class FilesController extends BaseApiController
 {
@@ -71,6 +73,7 @@ class FilesController extends BaseApiController
 
     public function examDraftFinal(FileNameRequest $request, string $name): Response|JsonResponse
     {
+        $name = $this->resolveFinalExamFileName($name);
         $downloadName = $this->draftNameService->build($name, 'finals');
 
         return $this->serveFile(
@@ -102,4 +105,37 @@ class FilesController extends BaseApiController
 
         return $this->fileService->serveInline($baseDir, $name, $allowedExtensions, $request, $downloadName, $nosniff);
     }
+
+    private function resolveFinalExamFileName(string $name): string
+    {
+        if (! ctype_digit($name) || ! Schema::hasTable('exam_drafts')) {
+            return $name;
+        }
+
+        $query = DB::table('exam_drafts')->where('id', (int) $name);
+        if (Schema::hasColumn('exam_drafts', 'final_pdf_file')) {
+            $query->select('final_file', 'final_pdf_file');
+        } else {
+            $query->select('final_file');
+        }
+
+        $row = $query->first();
+        if (! $row) {
+            return $name;
+        }
+
+        $pdfFile = trim((string) ($row->final_pdf_file ?? ''));
+        if ($this->looksLikeExamFileName($pdfFile)) {
+            return $pdfFile;
+        }
+
+        $finalFile = trim((string) ($row->final_file ?? ''));
+
+        return $this->looksLikeExamFileName($finalFile) ? $finalFile : $name;
+    }
+
+    private function looksLikeExamFileName(string $name): bool
+    {
+        return preg_match('/\.(doc|docx|pdf)\z/i', $name) === 1;
+    }
 }