Move fallback cover handling into Cover module

lib/music_library/records.ex

@@ -185,7 +185,7 @@ defmodule MusicLibrary.Records do
            {:musicbrainz_id, musicbrainz_id},
            music_brainz_config()
          ) do
-      {:error, :cover_not_available} -> {:ok, Record.fallback_cover_data()}
+      {:error, :cover_not_available} -> {:ok, Cover.fallback_data()}
       {:ok, cover_data} -> Cover.resize(cover_data)
     end
   end

lib/music_library/records/cover.ex

@@ -1,6 +1,15 @@
 defmodule MusicLibrary.Records.Cover do
   @size 600
 
+  @fallback_path :code.priv_dir(:music_library)
+                 |> Path.join("/cover-not-found.jpg")
+
+  @external_resource @fallback_path
+
+  @fallback_data File.read!(@fallback_path)
+
+  def fallback_data, do: @fallback_data
+
   def resize(cover_data, size \\ @size) do
     {:ok, thumb} = Vix.Vips.Operation.thumbnail_buffer(cover_data, size)
     Vix.Vips.Image.write_to_buffer(thumb, ".jpg")

lib/music_library/records/record.ex

@@ -138,15 +138,6 @@ defmodule MusicLibrary.Records.Record do
     end
   end
 
-  @fallback_cover_path :code.priv_dir(:music_library)
-                       |> Path.join("/cover-not-found.jpg")
-
-  @external_resource @fallback_cover_path
-
-  @fallback_cover_data File.read!(@fallback_cover_path)
-
-  def fallback_cover_data, do: @fallback_cover_data
-
   defp extract_included_release_group_ids(musicbrainz_data) do
     musicbrainz_data
     |> Map.get("relations", [])