Extract LastFm module

lib/music_library/artists.ex

@@ -19,46 +19,4 @@ defmodule MusicLibrary.Artists do
 
     q |> Repo.all() |> MapSet.new()
   end
-
-  def get_artist_info(artist) do
-    last_fm_config = last_fm_config()
-
-    case last_fm_config.api.get_artist_info(
-           {:musicbrainz_id, artist.musicbrainz_id},
-           last_fm_config
-         ) do
-      {:ok, info} ->
-        {:ok, info}
-
-      {:error, :invalid_parameters} ->
-        # Sometimes the artist info cannot be identified with the MusicBrainz ID,
-        # because Last.fm doesn't have that information. In that case, we try again with the artist name.
-        last_fm_config.api.get_artist_info({:name, artist.name}, last_fm_config)
-
-      error ->
-        error
-    end
-  end
-
-  def get_similar_artists(artist) do
-    last_fm_config = last_fm_config()
-
-    case last_fm_config.api.get_similar_artists(
-           {:musicbrainz_id, artist.musicbrainz_id},
-           last_fm_config
-         ) do
-      {:ok, info} ->
-        {:ok, info}
-
-      {:error, :invalid_parameters} ->
-        # Sometimes the artist info cannot be identified with the MusicBrainz ID,
-        # because Last.fm doesn't have that information. In that case, we try again with the artist name.
-        last_fm_config.api.get_similar_artists({:name, artist.name}, last_fm_config)
-
-      error ->
-        error
-    end
-  end
-
-  defp last_fm_config, do: LastFm.Config.resolve(:music_library)
 end