music_kraken/download/__init__.py

@@ -78,6 +78,8 @@ class Downloader:
         if page_type in self._registered_pages:
             return
 
+        print(page_type)
+
         self._registered_pages[page_type].add(page_type(
             download_options=self.download_options, 
             fetch_options=self.fetch_options, 
@@ -94,6 +96,7 @@ class Downloader:
 
     def scan_for_pages(self, **kwargs):
         # assuming the wanted pages are the leaf classes of the interface
+        from .. import pages
         leaf_classes = []
 
         class_list = [Page]
@@ -342,16 +345,18 @@ class Page:
         cls.LOGGER = logging.getLogger(cls.__name__)
         return super().__new__(cls)
 
+    @classmethod
+    def is_leaf_page(cls) -> bool:
+        return len(cls.__subclasses__()) == 0
+
     def __init__(self, download_options: DownloadOptions = None, fetch_options: FetchOptions = None, **kwargs):
-        if self.SOURCE_TYPE is not None:
-            self.SOURCE_TYPE.register_page(self)
+        self.SOURCE_TYPE.register_page(self)
         
         self.download_options: DownloadOptions = download_options or DownloadOptions()
         self.fetch_options: FetchOptions = fetch_options or FetchOptions()
 
     def __del__(self):
-        if self.SOURCE_TYPE is not None:
-            self.SOURCE_TYPE.deregister_page()
+        self.SOURCE_TYPE.deregister_page()
 
     def _search_regex(self, pattern, string, default=None, fatal=True, flags=0, group=None):
         """