feat: cleaned downloading

music_kraken/pages/abstract.py

@@ -419,9 +419,10 @@ class Page:
         if song.target_collection.empty:
             song.target_collection.append(new_target)
 
+        if not song.source_collection.has_source_page(self.SOURCE_TYPE):
+            return DownloadResult(error_message=f"No {self.__class__.__name__} source found for {song.option_string}.")
+
         sources = song.source_collection.get_sources(self.SOURCE_TYPE)
-        if len(sources) == 0:
-            return DownloadResult(error_message=f"No source found for {song.title} as {self.__class__.__name__}.")
 
         temp_target: Target = Target(
             relative_to_music_dir=False,
@@ -448,14 +449,19 @@ class Page:
             self.LOGGER.info(f"{song.option_string} already exists, thus not downloading again.")
             return r
 
-        source = sources[0]
-
         if not found_on_disc:
-            r = self.download_song_to_target(source=source, target=temp_target, desc=song.option_string)
+            for source in sources:
+                r = self.download_song_to_target(source=source, target=temp_target, desc=song.option_string)
 
-        if not r.is_fatal_error:
-            r.merge(self._post_process_targets(song, temp_target,
-                                               [] if found_on_disc else self.get_skip_intervals(song, source)))
+                if not r.is_fatal_error:
+                    break
+        
+        if temp_target.exists:
+            r.merge(self._post_process_targets(
+                song=song, 
+                temp_target=temp_target,
+                interval_list=[] if found_on_disc else self.get_skip_intervals(song, source)
+            ))
 
         return r