+# -*- coding: utf-8 -*-
+# Copyright (c) 2020-2021 kaliko <kaliko@azylum.org>
+#
+# This file is part of sima
+#
+# sima is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# sima is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with sima. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+"""
+Add titles based on Genre tag
+"""
+
+# standard library import
+from collections import Counter
+from random import shuffle
+
+# third parties components
+
+# local import
+from ...lib.plugin import AdvancedPlugin
+from ...lib.meta import Artist, MetaContainer
+from ...utils.utils import PluginException
+
+
+def forge_filter(genre):
+ mpd_filter = f"(Genre == '{genre.strip()}')"
+ # Ensure there is at least an artist name
+ mpd_filter = f"({mpd_filter} AND (artist != ''))"
+ return mpd_filter
+
+
+class Genre(AdvancedPlugin):
+ """Add track based on tags content
+ """
+
+ def __init__(self, daemon):
+ super().__init__(daemon)
+ self._setup_tagsneeded()
+
+ def _setup_tagsneeded(self):
+ """Ensure needed tags are exposed by MPD"""
+ self.log.debug('%s plugin needs the following metadata: Genre', self)
+ self.player.needed_tags |= {'genre'}
+
+ def start(self):
+ if (0, 21, 0) > tuple(map(int, self.player.mpd_version.split('.'))):
+ self.log.warning('MPD protocol version: %s < 0.21.0',
+ self.player.mpd_version)
+ self.log.error(
+ 'Need at least MPD 0.21 to use Genre plugin (filters required)')
+ self.player.disconnect()
+ raise PluginException('MPD >= 0.21 required')
+
+ def fetch_genres(self):
+ pldepth = 4
+ nbgenres = 2
+ current_titles = self.player.playlist[-pldepth:]
+ genres = []
+ for track in current_titles:
+ if not track.genres:
+ self.log.debug('No genre found in %s', track)
+ continue
+ genres.extend(track.genres)
+ genres_analysis = Counter(genres)
+ if genres_analysis.most_common():
+ self.log.debug('Most common genres: %s', genres_analysis.most_common())
+ return dict(genres_analysis.most_common(nbgenres)).keys()
+
+ def callback_need_track(self):
+ candidates = []
+ queue_mode = self.plugin_conf.get('queue_mode', 'track')
+ target = self.plugin_conf.getint(f'{queue_mode}_to_add')
+ genres = self.fetch_genres()
+ if not genres:
+ self.log.warning('No genre tag set in current tracks!')
+ return []
+ self.log.info('Genre plugin looking for genre: %s', ' / '.join(genres))
+ artists = MetaContainer([])
+ for genre in genres:
+ mpd_filter = forge_filter(genre)
+ self.log.debug('mpd filter: %s', mpd_filter)
+ _ = self.player.list('artist', mpd_filter)
+ shuffle(_)
+ artists |= MetaContainer([Artist(name=a) for a in _])
+ if not artists:
+ self.log.info('Genre plugin found nothing to queue')
+ return []
+ artists = self.get_reorg_artists_list(artists)
+ self.log.debug('Genre plugin found: %s…', ' / '.join(map(str, artists[:4])))
+ for artist in artists:
+ self.log.debug('looking for %s', artist)
+ tracks = self.player.find_tracks(artist)
+ trk = self.filter_track(tracks)
+ if not trk:
+ continue
+ if queue_mode == 'track':
+ self.log.info('Genre plugin chose: {}'.format(trk))
+ candidates.append(trk)
+ if len(candidates) == target:
+ break
+ else:
+ album = self.album_candidate(trk.Artist, unplayed=True)
+ if not album:
+ continue
+ candidates.extend(self.player.find_tracks(album))
+ if len({t.album for t in candidates}) == target:
+ break
+ return candidates
+
+# VIM MODLINE
+# vim: ai ts=4 sw=4 sts=4 expandtab
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