Add batch task to update release IDs

lib/music_library/records/batch.ex

@@ -21,6 +21,18 @@ defmodule MusicLibrary.Records.Batch do
     end
   end
 
+  def update_release_ids do
+    Record
+    |> Repo.all()
+    |> Enum.each(&update_release_ids/1)
+  end
+
+  def update_release_ids(record) do
+    record
+    |> Record.update_release_ids()
+    |> Repo.update!()
+  end
+
   defp musicbrainz do
     Application.get_env(:music_library, :musicbrainz, MusicBrainz.APIImpl)
   end

lib/music_library/records/record.ex

@@ -77,6 +77,13 @@ defmodule MusicLibrary.Records.Record do
     |> change(musicbrainz_data: musicbrainz_data)
   end
 
+  def update_release_ids(record) do
+    release_ids = Enum.map(record.musicbrainz_data["releases"], fn r -> r["id"] end)
+
+    record
+    |> change(release_ids: release_ids)
+  end
+
   def generate_cover_hash(record = %__MODULE__{cover_data: cover_data}) do
     hash = :crypto.hash(:sha256, cover_data) |> Base.encode16()