Let's also thumbnail the now playing widget

vrobbler/apps/books/models.py

@@ -1,5 +1,6 @@
 import logging
 from datetime import timedelta
+from typing import Optional
 from uuid import uuid4
 
 import requests
@@ -84,11 +85,11 @@ class Book(LongPlayScrobblableMixin):
         return f" by {self.author}"
 
     @property
-    def primary_image_url(self) -> str:
-        url = ""
+    def primary_image(self) -> Optional["ImageField"]:
+        img = None
         if self.cover:
-            url = self.cover.url
-        return url
+            img = self.cover
+        return img
 
     def get_start_url(self):
         return reverse("scrobbles:start", kwargs={"uuid": self.uuid})