Prefer alias if import languages not defined

beetsplug/mbpseudo.py

@@ -16,6 +16,7 @@
 
 from __future__ import annotations
 
+import itertools
 import traceback
 from copy import deepcopy
 from typing import TYPE_CHECKING, Any, Iterable, Sequence
@@ -24,6 +25,7 @@ import mediafile
 import musicbrainzngs
 from typing_extensions import override
 
+from beets import config
 from beets.autotag.distance import Distance, distance
 from beets.autotag.hooks import AlbumInfo
 from beets.autotag.match import assign_items
@@ -34,6 +36,7 @@ from beetsplug.musicbrainz import (
     MusicBrainzAPIError,
     MusicBrainzPlugin,
     _merge_pseudo_and_actual_album,
+    _preferred_alias,
 )
 
 if TYPE_CHECKING:
@@ -143,12 +146,13 @@ class MusicBrainzPseudoReleasePlugin(MusicBrainzPlugin):
             try:
                 raw_pseudo_release = self._release_getter(
                     album_id, RELEASE_INCLUDES
-                )
-                pseudo_release = super().album_info(
-                    raw_pseudo_release["release"]
-                )
+                )["release"]
+                pseudo_release = super().album_info(raw_pseudo_release)
 
                 if self.config["custom_tags_only"].get(bool):
+                    self._replace_artist_with_alias(
+                        raw_pseudo_release, pseudo_release
+                    )
                     self._add_custom_tags(official_release, pseudo_release)
                     return official_release
                 else:
@@ -212,6 +216,41 @@ class MusicBrainzPseudoReleasePlugin(MusicBrainzPlugin):
         else:
             return None
 
+    def _replace_artist_with_alias(
+        self,
+        raw_pseudo_release: JSONDict,
+        pseudo_release: AlbumInfo,
+    ):
+        """Use the pseudo-release's language to search for artist
+        alias if the user hasn't configured import languages."""
+
+        if len(config["import"]["languages"].as_str_seq()) > 0:
+            return
+
+        lang = raw_pseudo_release.get("text-representation", {}).get("language")
+        artist_credits = raw_pseudo_release.get("release-group", {}).get(
+            "artist-credit", []
+        )
+        aliases = [
+            artist_credit.get("artist", {}).get("alias-list", [])
+            for artist_credit in artist_credits
+        ]
+
+        if lang and len(lang) >= 2 and len(aliases) > 0:
+            locale = lang[0:2]
+            aliases_flattened = list(itertools.chain.from_iterable(aliases))
+            self._log.debug(
+                "Using locale '{0}' to search aliases {1}",
+                locale,
+                aliases_flattened,
+            )
+            if alias_dict := _preferred_alias(aliases_flattened, [locale]):
+                if alias := alias_dict.get("alias"):
+                    self._log.debug("Got alias '{0}'", alias)
+                    pseudo_release.artist = alias
+                    for track in pseudo_release.tracks:
+                        track.artist = alias
+
     def _add_custom_tags(
         self,
         official_release: AlbumInfo,

beetsplug/musicbrainz.py

@@ -118,13 +118,15 @@ BROWSE_CHUNKSIZE = 100
 BROWSE_MAXTRACKS = 500
 
 
-def _preferred_alias(aliases: list[JSONDict]):
-    """Given an list of alias structures for an artist credit, select
-    and return the user's preferred alias alias or None if no matching
+def _preferred_alias(
+    aliases: list[JSONDict], languages: list[str] | None = None
+) -> JSONDict | None:
+    """Given a list of alias structures for an artist credit, select
+    and return the user's preferred alias or None if no matching
     alias is found.
     """
     if not aliases:
-        return
+        return None
 
     # Only consider aliases that have locales set.
     valid_aliases = [a for a in aliases if "locale" in a]
@@ -134,7 +136,10 @@ def _preferred_alias(aliases: list[JSONDict]):
     ignored_alias_types = [a.lower() for a in ignored_alias_types]
 
     # Search configured locales in order.
-    for locale in config["import"]["languages"].as_str_seq():
+    if languages is None:
+        languages = config["import"]["languages"].as_str_seq()
+
+    for locale in languages:
         # Find matching primary aliases for this locale that are not
         # being ignored
         matches = []
@@ -152,6 +157,8 @@ def _preferred_alias(aliases: list[JSONDict]):
 
         return matches[0]
 
+    return None
+
 
 def _multi_artist_credit(
     credit: list[JSONDict], include_join_phrase: bool

test/plugins/test_mbpseudo.py

@@ -3,6 +3,7 @@ import pathlib
 
 import pytest
 
+from beets import config
 from beets.autotag import AlbumMatch
 from beets.autotag.distance import Distance
 from beets.autotag.hooks import AlbumInfo, TrackInfo
@@ -230,7 +231,6 @@ class TestMBPseudoPluginCustomTagsOnly(PluginMixin):
 
     @pytest.fixture(scope="class")
     def mbpseudo_plugin(self) -> MusicBrainzPseudoReleasePlugin:
-        self.config["import"]["languages"] = ["en", "jp"]
         self.config[self.plugin]["scripts"] = ["Latn"]
         self.config[self.plugin]["custom_tags_only"] = True
         return MusicBrainzPseudoReleasePlugin()
@@ -255,6 +255,25 @@ class TestMBPseudoPluginCustomTagsOnly(PluginMixin):
         official_release: JSONDict,
         pseudo_release: JSONDict,
     ):
+        config["import"]["languages"] = []
+        mbpseudo_plugin._release_getter = (
+            lambda album_id, includes: pseudo_release
+        )
+        album_info = mbpseudo_plugin.album_info(official_release["release"])
+        assert not isinstance(album_info, PseudoAlbumInfo)
+        assert album_info.data_source == "MusicBrainzPseudoRelease"
+        assert album_info["album_transl"] == "In Bloom"
+        assert album_info["album_artist_transl"] == "Lilas Ikuta"
+        assert album_info.tracks[0]["title_transl"] == "In Bloom"
+        assert album_info.tracks[0]["artist_transl"] == "Lilas Ikuta"
+
+    def test_custom_tags_with_import_languages(
+        self,
+        mbpseudo_plugin: MusicBrainzPseudoReleasePlugin,
+        official_release: JSONDict,
+        pseudo_release: JSONDict,
+    ):
+        config["import"]["languages"] = ["en", "jp"]
         mbpseudo_plugin._release_getter = (
             lambda album_id, includes: pseudo_release
         )