]> kaliko git repositories - mpd-sima.git/blobdiff - sima/plugins/lastfm.py
Some hesitation regarding blacklist decorator…
[mpd-sima.git] / sima / plugins / lastfm.py
index 01e8cd98160625bf7905d4479e4376c1ff07a690..679aaa6a78f52156972b8f4f6396ce625dd41a28 100644 (file)
@@ -7,16 +7,14 @@ Fetching similar artists from last.fm web services
 import random
 
 from collections import deque
-from difflib import get_close_matches
+from itertools import dropwhile
 from hashlib import md5
 
 # third parties componants
 
 # local import
-from ..utils.leven import levenshtein_ratio
 from ..lib.plugin import Plugin
 from ..lib.simafm import SimaFM, XmlFMHTTPError, XmlFMNotFound, XmlFMError
-from ..lib.simastr import SimaStr
 from ..lib.track import Track
 
 
@@ -38,6 +36,36 @@ def cache(func):
     return wrapper
 
 
+def blacklist(artist=False, album=False, track=False):
+    #pylint: disable=C0111,W0212
+    field = (artist, album, track)
+    def decorated(func):
+        def wrapper(*args, **kwargs):
+            cls = args[0]
+            boolgen = (bl for bl in field)
+            bl_fun = (cls._Plugin__daemon.sdb.get_bl_artist,
+                      cls._Plugin__daemon.sdb.get_bl_album,
+                      cls._Plugin__daemon.sdb.get_bl_track,)
+            #bl_getter = next(fn for fn, bl in zip(bl_fun, boolgen) if bl is True)
+            bl_getter = next(dropwhile(lambda _: not next(boolgen), bl_fun))
+            cls.log.debug('using {0} as bl filter'.format(bl_getter.__name__))
+            if artist:
+                results = func(*args, **kwargs)
+                for elem in results:
+                    if bl_getter(elem, add_not=True):
+                        cls.log.info('Blacklisted: {0}'.format(elem))
+                        results.remove(elem)
+                return results
+            if track:
+                for elem in args[1]:
+                    if bl_getter(elem, add_not=True):
+                        cls.log.info('Blacklisted: {0}'.format(elem))
+                        args[1].remove(elem)
+                return func(*args, **kwargs)
+        return wrapper
+    return decorated
+
+
 class Lastfm(Plugin):
     """last.fm similar artists
     """
@@ -46,7 +74,6 @@ class Lastfm(Plugin):
         Plugin.__init__(self, daemon)
         self.daemon_conf = daemon.config
         self.sdb = daemon.sdb
-        self.player = daemon.player
         self.history = daemon.short_history
         ##
         self.to_add = list()
@@ -79,12 +106,11 @@ class Lastfm(Plugin):
         """
         for _ , val in self._cache.items():
             if isinstance(val, dict):
-                while len(val) > 100:
+                while len(val) > 150:
                     val.popitem()
 
     def get_history(self, artist):
-        """Check against history for tracks already in history for a specific
-        artist.
+        """Constructs list of Track for already played titles for an artist.
         """
         duration = self.daemon_conf.getint('sima', 'history_duration')
         tracks_from_db = self.sdb.get_history(duration=duration, artist=artist)
@@ -93,11 +119,13 @@ class Lastfm(Plugin):
                                file=tr[3]) for tr in tracks_from_db]
         return played_tracks
 
+    #@blacklist(track=True)
     def filter_track(self, tracks):
         """
         Extract one unplayed track from a Track object list.
             * not in history
             * not already in the queue
+            * not blacklisted
         """
         artist = tracks[0].artist
         black_list = self.player.queue + self.to_add
@@ -105,18 +133,34 @@ class Lastfm(Plugin):
         if not not_in_hist:
             self.log.debug('All tracks already played for "{}"'.format(artist))
         random.shuffle(not_in_hist)
-        candidate = [ trk for trk in not_in_hist if trk not in black_list ]
+        #candidate = [ trk for trk in not_in_hist if trk not in black_list 
+                      #if not self.sdb.get_bl_track(trk, add_not=True)]
+        candidate = []
+        for trk in [_ for _ in not_in_hist if _ not in black_list]:
+            if self.sdb.get_bl_track(trk, add_not=True):
+                self.log.info('Blacklisted: {0}: '.format(trk))
+                continue
+            if self.sdb.get_bl_album(trk, add_not=True):
+                self.log.info('Blacklisted album: {0}: '.format(trk))
+                continue
+            candidate.append(trk)
         if not candidate:
             self.log.debug('Unable to find title to add' +
-                          ' for "%s".' % artist)
+                           ' for "%s".' % artist)
             return None
+        #@blacklist(track=True)
+        #def deco(self, args):
+            #return args
+        #candidate = deco(self, candidate)
         self.to_add.append(random.choice(candidate))
+        return self.to_add
 
     def _get_artists_list_reorg(self, alist):
         """
         Move around items in artists_list in order to play first not recently
         played artists
         """
+        # TODO: move to utils as a decorator
         duration = self.daemon_conf.getint('sima', 'history_duration')
         art_in_hist = list()
         for trk in self.sdb.get_history(duration=duration,
@@ -131,62 +175,7 @@ class Lastfm(Plugin):
                        ' / '.join(art_not_in_hist)))
         return art_not_in_hist
 
-    def _cross_check_artist(self, art):
-        """
-        Controls presence of artists in liste in music library.
-        Crosschecking artist names with SimaStr objects / difflib / levenshtein
-
-        TODO: proceed crosschecking even when an artist matched !!!
-              Not because we found "The Doors" as "The Doors" that there is no
-              remaining entries as "Doors" :/
-              not straight forward, need probably heavy refactoring.
-        """
-        matching_artists = list()
-        artist = SimaStr(art)
-        all_artists = self._cache.get('artists')
-
-        # Check against the actual string in artist list
-        if artist.orig in all_artists:
-            self.log.debug('found exact match for "%s"' % artist)
-            return [artist]
-        # Then proceed with fuzzy matching if got nothing
-        match = get_close_matches(artist.orig, all_artists, 50, 0.73)
-        if not match:
-            return []
-        self.log.debug('found close match for "%s": %s' %
-                       (artist, '/'.join(match)))
-        # Does not perform fuzzy matching on short and single word strings
-        # Only lowercased comparison
-        if ' ' not in artist.orig and len(artist) < 8:
-            for fuzz_art in match:
-                # Regular string comparison SimaStr().lower is regular string
-                if artist.lower() == fuzz_art.lower():
-                    matching_artists.append(fuzz_art)
-                    self.log.debug('"%s" matches "%s".' % (fuzz_art, artist))
-            return matching_artists
-        for fuzz_art in match:
-            # Regular string comparison SimaStr().lower is regular string
-            if artist.lower() == fuzz_art.lower():
-                matching_artists.append(fuzz_art)
-                self.log.debug('"%s" matches "%s".' % (fuzz_art, artist))
-                return matching_artists
-            # Proceed with levenshtein and SimaStr
-            leven = levenshtein_ratio(artist.stripped.lower(),
-                    SimaStr(fuzz_art).stripped.lower())
-            # SimaStr string __eq__, not regular string comparison here
-            if artist == fuzz_art:
-                matching_artists.append(fuzz_art)
-                self.log.info('"%s" quite probably matches "%s" (SimaStr)' %
-                              (fuzz_art, artist))
-            elif leven >= 0.82:  # PARAM
-                matching_artists.append(fuzz_art)
-                self.log.debug('FZZZ: "%s" should match "%s" (lr=%1.3f)' %
-                               (fuzz_art, artist, leven))
-            else:
-                self.log.debug('FZZZ: "%s" does not match "%s" (lr=%1.3f)' %
-                               (fuzz_art, artist, leven))
-        return matching_artists
-
+    @blacklist(artist=True)
     @cache
     def get_artists_from_player(self, similarities):
         """
@@ -204,8 +193,8 @@ class Lastfm(Plugin):
             art_pop, match = similarities.pop()
             if match < similarity:
                 break
-            results.extend(self._cross_check_artist(art_pop))
-        results and self.log.debug('Similarity: %d%%' % match)
+            results.extend(self.player.fuzzy_find(art_pop))
+        results and self.log.debug('Similarity: %d%%' % match) # pylint: disable=w0106
         return results
 
     def lfm_similar_artists(self, artist=None):
@@ -297,7 +286,7 @@ class Lastfm(Plugin):
             self.log.debug('Trying to find titles to add for "{}"'.format(
                            artist))
             found = self.player.find_track(artist)
-            # find tracks not in history
+            # find tracks not in history for artist
             self.filter_track(found)
             if len(self.to_add) == nbtracks_target:
                 break
@@ -311,17 +300,19 @@ class Lastfm(Plugin):
     def _album(self):
         """Get albums for album queue mode
         """
-        artists = self.get_local_similar_artists()
+        #artists = self.get_local_similar_artists()
+        pass
 
     def _top(self):
         """Get some tracks for top track queue mode
         """
-        artists = self.get_local_similar_artists()
+        #artists = self.get_local_similar_artists()
+        pass
 
     def callback_need_track(self):
         self._cleanup_cache()
         if not self.player.current:
-            self.log.info('No currently playing track, cannot queue')
+            self.log.info('Not currently playing track, cannot queue')
             return None
         self.queue_mode()
         candidates = self.to_add