fix: implemented artwork.add_data

music_kraken/utils/__init__.py

@@ -156,6 +156,7 @@ def create_dataclass_instance(t, data: dict):
         Tuple[Type, dict]: The created instance and a dict, containing the data, which was not used in the creation
     """
     
-    data = {k: v for k, v in data.items() if hasattr(t, k)}
-    removed_data = {k: v for k, v in data.items() if not hasattr(t, k)}
-    return t(**data), removed_data
+    needed_data = {k: v for k, v in data.items() if k in t.__dataclass_fields__}
+    removed_data = {k: v for k, v in data.items() if k not in t.__dataclass_fields__}
+
+    return t(**needed_data), removed_data

music_kraken/utils/string_processing.py

@@ -1,3 +1,4 @@
+import re
 import string
 from functools import lru_cache
 from pathlib import Path
@@ -237,5 +238,6 @@ def is_url(value: Any) -> bool:
     
     if not isinstance(value, str):
         return True
-
-    return re.match(URL_PATTERN, query) is not None
+        
+    # value has to be a string
+    return re.match(URL_PATTERN, value) is not None