rewrite db stuff with scalars and generators

+ dump mixes with less than x=4 artists
+ try: disable pragma mmap_size

app/lib/mapstuff.py

@@ -33,16 +33,22 @@ def map_scrobble_data():
         if track is None:
             continue
 
-        track.increment_playcount(data["playduration"], data["lastplayed"], data["playcount"])
+        track.increment_playcount(
+            data["playduration"], data["lastplayed"], data["playcount"]
+        )
 
         album = AlbumStore.albummap.get(track.tracks[0].albumhash)
         if album:
-            album.increment_playcount(data["playduration"], data["lastplayed"], data["playcount"])
+            album.increment_playcount(
+                data["playduration"], data["lastplayed"], data["playcount"]
+            )
 
         for artisthash in track.tracks[0].artisthashes:
             artist = ArtistStore.artistmap.get(artisthash)
             if artist:
-                artist.increment_playcount(data["playduration"], data["lastplayed"], data["playcount"])
+                artist.increment_playcount(
+                    data["playduration"], data["lastplayed"], data["playcount"]
+                )
 
 
 def map_favorites():

app/lib/playlistlib.py

@@ -28,7 +28,7 @@ def create_thumbnail(image: Any, img_path: str) -> str:
 
     new_w = round(250 * aspect_ratio)
 
-    thumb = image.resize((new_w, 250), Image.ANTIALIAS)
+    thumb = image.resize((new_w, 250), Image.Resampling.LANCZOS)
     thumb.save(full_thumb_path, "webp")
 
     return thumb_path
@@ -50,7 +50,7 @@ def create_gif_thumbnail(image: Any, img_path: str):
 
         new_w = round(250 * aspect_ratio)
 
-        thumb = frame.resize((new_w, 250), Image.ANTIALIAS)
+        thumb = frame.resize((new_w, 250), Image.Resampling.LANCZOS)
         frames.append(thumb)
 
     frames[0].save(full_thumb_path, save_all=True, append_images=frames[1:])

app/lib/populate.py

@@ -169,8 +169,7 @@ class FetchSimilarArtistsLastFM:
 
     def __init__(self, instance_key: str) -> None:
         # read all artists from db
-        processed = SimilarArtistTable.get_all()
-        processed = ".".join(a for a in processed)
+        processed = set(a.artisthash for a in SimilarArtistTable.get_all())
 
         # filter out artists that already have similar artists
         artists = filter(