refactored Song object. I hooooope it works

src/music_kraken/database/get_song.py

@@ -0,0 +1,57 @@
+from typing import List
+
+from .song import (
+    Song,
+    Source,
+    Target,
+    Metadata,
+    Artist,
+    LyricsContainer,
+    Lyrics
+)
+
+
+def get_song_from_response(response: dict) -> Song:
+    # artists
+    artists = [Artist(a) for a in response['artists']]
+
+    # metadata
+    metadata = Metadata()
+    for key, value in response.items():
+        metadata[key] = value
+    metadata['artists'] = [a.name for a in artists]
+    
+    # sources
+    sources: List[Source] = []
+    for src in response['source']:
+        if src['src'] is None:
+            continue
+        sources.append(Source(src))
+
+    # target
+    target = Target()
+    target.set_file(response['file'])
+    target.set_path(response['path'])
+
+    # Lyrics
+    lyrics_container = LyricsContainer()
+    lyrics_container.append(Lyrics(text=response['lyrics'], language='en'))
+
+    length = response['length']
+    if length is not None:
+        length = int(length)
+
+    song = Song(
+        id_=response['id'],
+        mb_id=response['id'],
+        title=response['title'],
+        release=response['album'],
+        isrc=response['isrc'],
+        length=length,
+        artists=artists,
+        metadata=metadata,
+        sources=sources,
+        target=target
+    )
+
+    return song