Update main.py

main.py

@@ -1272,24 +1272,25 @@ def view_quizzes():
 @app.route('/api/user/performance', methods=['GET'])
 def get_user_performance():
     """Retrieves user's quiz performance and provides simple suggestions."""
-    user, error = verify_token(request.headers.get('Authorization'))
-    if error: return jsonify({'error': error['error']}), error['status']
-    if not supabase: return jsonify({'error': 'Backend service unavailable'}), 503
-
     try:
-        # --- Fetch recent quiz attempts ---
-        attempts_res = supabase.table('quiz_attempts')\
-            .select('id, quiz_id, score, submitted_at, quizzes(difficulty, notes(material_id, study_materials(type, title))))')\
-            .eq('user_id', user.id)\
-            .order('submitted_at', desc=True)\
-            .limit(20)\
-            .execute() # Join to get context
-
-        if attempts_res.error:
-             raise Exception(f"Failed to fetch quiz attempts: {attempts_res.error}")
-
-        attempts_data = attempts_res.data
-
+        # Authentication
+        user, error = verify_token(request.headers.get('Authorization'))
+        if error: return jsonify({'error': error['error']}), error['status']
+        
+        # Query with proper error handling
+        attempts_res = supabase.table('quiz_attempts') \
+            .select('id, quiz_id, score, submitted_at, quizzes(difficulty, notes(study_materials(title, type)))') \
+            .eq('user_id', user.id) \
+            .order('submitted_at', desc=True) \
+            .limit(20)
+            
+        result = attempts_res.execute()
+        
+        if hasattr(result, 'error') and result.error:
+            raise Exception(result.error.message)
+        
+        attempts_data = result.data
+        
         # --- Basic Analysis ---
         average_score = 0.0
         suggestions = []
@@ -1303,33 +1304,28 @@ def get_user_performance():
                 # Suggest reviewing specific materials from recent low scores
                 low_score_attempts = sorted([a for a in attempts_data if a['score'] < 60], key=lambda x: x['submitted_at'], reverse=True)
                 if low_score_attempts:
-                     # Safely access nested data
                     quiz_info = low_score_attempts[0].get('quizzes')
-                    if quiz_info:
-                        notes_info = quiz_info.get('notes')
-                        if notes_info:
-                            material_info = notes_info.get('study_materials')
-                            if material_info and material_info.get('title'):
-                                suggestions.append(f"Focus on reviewing the material titled: '{material_info['title']}'.")
-
-
+                    if quiz_info and quiz_info.get('notes') and quiz_info['notes'].get('study_materials'):
+                        material_info = quiz_info['notes']['study_materials']
+                        if material_info.get('title'):
+                            suggestions.append(f"Focus on reviewing the material titled: '{material_info['title']}'.")
             elif average_score > 85:
                 suggestions.append("Great job on your recent quizzes! Consider trying 'hard' difficulty quizzes or exploring new topics.")
             else:
-                 suggestions.append("You're making good progress! Keep practicing to solidify your understanding.")
-
-        # Add more sophisticated analysis here (e.g., performance by topic/difficulty)
+                suggestions.append("You're making good progress! Keep practicing to solidify your understanding.")
 
         return jsonify({
             'success': True,
             'average_score': round(average_score, 2) if attempts_data else None,
-            'recent_attempts': attempts_data, # Return structured attempt data
+            'recent_attempts': attempts_data,
             'suggestions': suggestions
         })
-
+    
     except Exception as e:
-        logging.error(f"Unexpected error fetching performance for user {user.id}: {traceback.format_exc()}")
-        return jsonify({'error': f'An unexpected error occurred: {e}'}), 500
+        print(f"Error in /api/user/performance: {str(e)}")  # Debug logging
+        logging.error(f"Performance endpoint error: {str(e)}")
+        logging.error(traceback.format_exc())
+        return jsonify({'error': str(e)}), 500
 
 
 # === Admin Endpoints (Adapted for Supabase) ===