From 03039a961148cecbcd919b25b04774f1f31996a8 Mon Sep 17 00:00:00 2001
From: Hamza-Ayed <hamzaayedflutter@gmail.com>
Date: Sat, 29 Aug 2026 00:14:43 +0300
Subject: [PATCH] fix: Strip markdown fences from Gemini JSON response to fix
 PDF curriculum extraction

---
 backend/scripts/curriculum_worker.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/backend/scripts/curriculum_worker.php b/backend/scripts/curriculum_worker.php
index d6dd403..b3c998c 100644
--- a/backend/scripts/curriculum_worker.php
+++ b/backend/scripts/curriculum_worker.php
@@ -209,9 +209,17 @@ if ($code !== 200 || empty($res)) {
 
 $jsonResponse = json_decode($res, true);
 $text = $jsonResponse['candidates'][0]['content']['parts'][0]['text'] ?? '';
+
+// Clean up markdown fences if Gemini returned them
+$text = preg_replace('/^```json\s*/i', '', $text);
+$text = preg_replace('/```\s*$/i', '', $text);
+$text = trim($text);
+
 $parsedStructure = json_decode($text, true);
 
 if (empty($parsedStructure) || empty($parsedStructure['units'])) {
+    // Log the actual text for debugging
+    file_put_contents($stateFile . '.debug.txt', $text);
     updateState($stateFile, 'error', 0, 'فشل الذكاء الاصطناعي في إرجاع بنية JSON صالحة.');
     return;
 }