Refactor main.py to convert keys in JSON objects to lowercase

main.py

@@ -138,6 +138,9 @@ async def handle_callback(request: Request):
             card_obj = parse_gemini_result_to_json(result.text)
             print("------------JSON---------------")
             print(card_obj)
+            card_obj = {k.lower(): v for k, v in card_obj.items()}
+            print("------------lowercase---------------")
+            print(card_obj)
 
             # check card_obj is json obj
             if card_obj is None:
@@ -180,7 +183,9 @@ def load_json_string_to_object(json_str):
     """
     try:
         json_str = json_str.replace("'", '"')
-        return json.loads(json_str)
+        json_obj = json.loads(json_str)
+        json_obj = {k.lower(): v for k, v in json_obj.items()}
+        return json_obj
     except json.JSONDecodeError as e:
         print(f"Error loading JSON string: {e}")
         return None