feat: implemented the merging from where it has been fetched from

music_kraken/objects/parents.py

@@ -32,6 +32,7 @@ class InnerData:
 
     def __init__(self, object_type, **kwargs):
         self._refers_to_instances = set()
+        self._fetched_from: dict = {}
 
         # collection : collection that is a collection of self
         self._is_collection_child: Dict[Collection, Collection] = {}
@@ -52,6 +53,8 @@ class InnerData:
         :return:
         """
 
+        self._fetched_from.update(__other._fetched_from)
+
         for key, value in __other.__dict__.copy().items():
             # just set the other value if self doesn't already have it
             if key not in self.__dict__ or (key in self.__dict__ and self.__dict__[key] == self._default_values.get(key)):
@@ -109,7 +112,6 @@ class OuterProxy:
 
                 del kwargs[name]
 
-        self._fetched_from: dict = {}
         self._inner: InnerData = InnerData(type(self), **kwargs)
         self._inner._refers_to_instances.add(self)
 
@@ -220,13 +222,13 @@ class OuterProxy:
 
     def mark_as_fetched(self, *url_hash_list: List[str]):
         for url_hash in url_hash_list:
-            self._fetched_from[url_hash] = {
+            self._inner._fetched_from[url_hash] = {
                 "time": get_unix_time(),
                 "url": url_hash,
             }
 
     def already_fetched_from(self, url_hash: str) -> bool:
-        res = self._fetched_from.get(url_hash, None)
+        res = self._inner._fetched_from.get(url_hash, None)
 
         if res is None:
             return False