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# -*- coding: utf-8 -*-
import json
import urllib2
from gi.repository import GLib
from quodlibet import _
from quodlibet import app
from quodlibet.plugins.events import EventPlugin
from quodlibet.plugins import PluginConfig
from quodlibet.qltk import Icons
from quodlibet.query import Query
from quodlibet.util.dprint import print_d
pconfig = PluginConfig("notify")
pconfig.defaults.set("blacklist_track_count", 10)
pconfig.defaults.set("blacklist_artist_count", 10)
class LastFMSimilarity(EventPlugin):
PLUGIN_ID = "Last.fm Similarity"
PLUGIN_NAME = _("Last.fm Similarity")
PLUGIN_DESC = _("Finds a similar song using Last.fm's track similarity API"
" and adds it to the queue.")
PLUGIN_ICON = Icons.NETWORK_WORKGROUP
LAST_FM_API_URI = "http://ws.audioscrobbler.com/2.0/"
API_KEY = "e94b09aa2c04ab264deb7a7ae02ecd05"
LAST_FM_API_METHODS = {
"similar_artists": "artist.getSimilar",
"similar_tracks": "track.getSimilar",
}
def __init__(self):
self._last_tracks = []
self._last_artists = []
def _check_artist_played(self, artist):
if artist in self._last_artists:
return True
else:
return False
def _check_track_played(self, track):
if track in self._last_tracks:
return True
else:
return False
def _build_uri(self, request):
return "".join((self.LAST_FM_API_URI, request, "&api_key=",
self.API_KEY, "&format=json"))
def _find_similar_tracks(self, trackname, artistname, mbid=None, limit=20):
request = "".join(("?method=",
self.LAST_FM_API_METHODS["similar_tracks"]))
if mbid:
request = "".join((request, "&mbid=", mbid))
else:
request = "".join((request, "&track=", trackname, "&artist=",
artistname))
request = "".join((request, "&limit={}".format(limit)))
uri = self._build_uri(request)
stream = None
try:
stream = urllib2.urlopen(uri)
except urllib2.URLError:
return []
if stream.getcode() == 200:
similar_tracks = []
try:
response = json.load(stream)
for track in response["similartracks"]["track"]:
similar_tracks.append(
(track["artist"]["name"], track["name"]))
return similar_tracks
except KeyError:
return []
else:
return []
def _find_similar_artists(self, artistname, mbid=None, limit=20):
request = "".join(("?method=",
self.LAST_FM_API_METHODS["similar_artists"]))
if mbid:
request = "".join((request, "&mbid=", mbid))
else:
request = "".join((request, "&artist=", artistname))
request = "".join((request, "&limit={}".format(limit)))
uri = self._build_uri(request)
stream = None
try:
stream = urllib2.urlopen(uri)
except urllib2.URLError:
return []
if stream.getcode() == 200:
similar_artists = []
try:
response = json.load(stream)
for artist in response["similarartists"]["artist"]:
similar_artists.append(artist["name"])
return similar_artists
except KeyError:
return []
else:
return []
def on_change(self, song):
artist = song.get("artist")
track = song.get("title")
candidates = []
try:
mbid = song.get("musicbrainz_releasetrackid")
candidates = self._find_similar_tracks(track, artist, mbid)
except KeyError:
candidates = self._find_similar_tracks(track, artist)
if candidates:
for candidate in candidates:
if not self._check_artist_played(candidate[0]):
print_d("[similarity] found track match: %s - %s"
% (candidate[0], candidate[1]))
if (len(self._last_tracks)
== pconfig.getint("blacklist_track_count")):
del self._last_tracks[0]
query = Query.StrictQueryMatcher(
"&(artist = \"%s\", title = \"%s\")"
% (candidate[0], candidate[1]))
try:
results = filter(query.search, app.library)
if results:
song = results[0]
if self._check_track_played(song.get("~filename")):
continue
self._last_tracks.append(song.get("~filename"))
if (len(self._last_artists)
== pconfig.getint(
"blacklist_artist_count")):
del self._last_artists[0]
self._last_artists.append(song.get("artist"))
app.window.playlist.enqueue([song])
return
except AttributeError:
pass
artist_candidates = self._find_similar_artists(artist)
for artist in artist_candidates:
if not self._check_artist_played(artist):
print_d("[similarity] found artist match: %s" % artist)
query = Query.StrictQueryMatcher(
"&(artist = \"%s\", title != \"[silence]\")" % artist)
try:
results = filter(query.search, app.library)
for song in results:
if self._check_track_played(song.get("~filename")):
continue
if (len(self._last_artists)
== pconfig.getint("blacklist_artist_count")):
del self._last_artists[0]
self._last_artists.append(song.get("artist"))
self._last_tracks.append(song.get("~filename"))
app.window.playlist.enqueue([song])
return
except AttributeError:
pass
def plugin_on_song_started(self, song):
self._last_tracks.append(song.get("~filename"))
self._last_artists.append(song.get("artist"))
GLib.idle_add(self.on_change, song)
def plugin_on_song_ended(self, song, stopped):
if len(self._last_tracks) == pconfig.getint("blacklist_track_count"):
del self._last_tracks[0]
if len(self._last_artists) == pconfig.getint("blacklist_artist_count"):
del self._last_artists[0]
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