feat: completely dynamified the datasource import

music_kraken/download/__init__.py

@@ -78,8 +78,6 @@ 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, 
@@ -97,6 +95,7 @@ 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]
@@ -110,6 +109,9 @@ class Downloader:
             else:
                 class_list.extend(class_subclasses)
 
+        if Page in leaf_classes:
+            self.LOGGER.warn("couldn't find any data source")
+            return
         for leaf_class in leaf_classes:
             self.register_page(leaf_class, **kwargs)