Extract Artists context

lib/music_library/artists.ex

@@ -0,0 +1,64 @@
+defmodule MusicLibrary.Artists do
+  import Ecto.Query, warn: false
+  alias MusicLibrary.Repo
+
+  alias MusicLibrary.Records.ArtistRecord
+
+  def get_artist!(musicbrainz_id) do
+    q =
+      from ar in ArtistRecord,
+        where: ar.musicbrainz_id == ^musicbrainz_id,
+        limit: 1,
+        select: ar.artist
+
+    Repo.one!(q)
+  end
+
+  def get_all_artist_ids do
+    q = from ar in ArtistRecord, distinct: true, select: ar.musicbrainz_id
+
+    q |> Repo.all() |> MapSet.new()
+  end
+
+  def get_artist_info(artist) do
+    last_fm_config = last_fm_config()
+    # 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.
+    case last_fm_config.api.get_artist_info(
+           {:musicbrainz_id, artist.musicbrainz_id},
+           last_fm_config
+         ) do
+      {:ok, info} ->
+        {:ok, info}
+
+      # TODO: remap error codes
+      {:error, %{"error" => 6}} ->
+        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()
+    # 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.
+    case last_fm_config.api.get_similar_artists(
+           {:musicbrainz_id, artist.musicbrainz_id},
+           last_fm_config
+         ) do
+      {:ok, info} ->
+        {:ok, info}
+
+      # TODO: remap error codes
+      {:error, %{"error" => 6}} ->
+        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

lib/music_library/records.ex

@@ -90,22 +90,6 @@ defmodule MusicLibrary.Records do
 
   def get_record!(id), do: Repo.get!(Record, id)
 
-  def get_artist!(musicbrainz_id) do
-    q =
-      from ar in ArtistRecord,
-        where: ar.musicbrainz_id == ^musicbrainz_id,
-        limit: 1,
-        select: ar.artist
-
-    Repo.one!(q)
-  end
-
-  def get_all_artist_ids do
-    q = from ar in ArtistRecord, distinct: true, select: ar.musicbrainz_id
-
-    q |> Repo.all() |> MapSet.new()
-  end
-
   def get_artist_records(musicbrainz_id) do
     q =
       from r in Record,
@@ -116,46 +100,6 @@ defmodule MusicLibrary.Records do
     Repo.all(q)
   end
 
-  def get_artist_info(artist) do
-    last_fm_config = last_fm_config()
-    # 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.
-    case last_fm_config.api.get_artist_info(
-           {:musicbrainz_id, artist.musicbrainz_id},
-           last_fm_config
-         ) do
-      {:ok, info} ->
-        {:ok, info}
-
-      # TODO: remap error codes
-      {:error, %{"error" => 6}} ->
-        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()
-    # 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.
-    case last_fm_config.api.get_similar_artists(
-           {:musicbrainz_id, artist.musicbrainz_id},
-           last_fm_config
-         ) do
-      {:ok, info} ->
-        {:ok, info}
-
-      # TODO: remap error codes
-      {:error, %{"error" => 6}} ->
-        last_fm_config.api.get_similar_artists({:name, artist.name}, last_fm_config)
-
-      error ->
-        error
-    end
-  end
-
   def get_cover(id) do
     q =
       from r in Record,
@@ -299,6 +243,4 @@ defmodule MusicLibrary.Records do
   end
 
   defp music_brainz_config, do: MusicBrainz.Config.resolve(:music_library)
-
-  defp last_fm_config, do: LastFm.Config.resolve(:music_library)
 end