1 # -*- coding: utf-8 -*-
3 # Copyright (c) 2014 Jack Kaliko <kaliko@azylum.org>
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
21 Consume EchoNest web service
25 __author__ = 'Jack Kaliko'
30 from sima.lib.meta import Artist
31 from sima.lib.track import Track
32 from sima.lib.http import HttpClient
33 from sima.utils.utils import WSError, WSNotFound
34 from sima.utils.utils import getws
35 if len(ECH.get('apikey')) == 23: # simple hack allowing imp.reload
39 def get_mbid(obj, foreign='foreign_ids'):
41 for frgnid in obj.get(foreign):
42 if frgnid.get('catalog') == 'musicbrainz':
43 return frgnid.get('foreign_id').split(':')[2]
48 """EchoNest http client
50 root_url = 'http://{host}/api/{version}'.format(**ECH)
59 self.http = HttpClient(cache=self.cache, stats=self.stats)
61 def _controls_answer(self, ans):
64 status = ans.get('response').get('status')
65 code = status.get('code')
69 raise WSNotFound('Artist not found')
70 raise WSError(status.get('message'))
72 def _forge_payload(self, artist, top=False):
75 payload = {'api_key': ECH.get('apikey')}
76 if not isinstance(artist, Artist):
77 raise TypeError('"{0!r}" not an Artist object'.format(artist))
79 payload.update(id='musicbrainz:artist:{0}'.format(artist.mbid))
81 payload.update(name=artist.name)
82 payload.update(bucket='id:musicbrainz')
83 payload.update(results=100)
86 aid = payload.pop('id')
87 payload.update(artist_id=aid)
89 name = payload.pop('name')
90 payload.update(artist=name)
91 payload.update(results=100)
92 payload.update(sort='song_hotttnesss-desc')
93 # > hashing the URL into a cache key
94 # return a sorted list of 2-tuple to have consistent cache
95 return sorted(payload.items(), key=lambda param: param[0])
97 def get_similar(self, artist=None):
98 """Fetch similar artists
100 payload = self._forge_payload(artist)
102 ressource = '{0}/artist/similar'.format(SimaEch.root_url)
103 ans = self.http(ressource, payload)
104 self._controls_answer(ans.json()) # pylint: disable=no-member
105 for art in ans.json().get('response').get('artists'): # pylint: disable=no-member
107 yield Artist(mbid=mbid, name=art.get('name'))
109 def get_toptrack(self, artist=None):
110 """Fetch artist top tracks
112 payload = self._forge_payload(artist, top=True)
114 ressource = '{0}/song/search'.format(SimaEch.root_url)
115 ans = self.http(ressource, payload)
116 self._controls_answer(ans.json()) # pylint: disable=no-member
118 art = {'artist': artist.name,
119 'musicbrainz_artistid': artist.mbid,}
120 for song in ans.json().get('response').get('songs'): # pylint: disable=no-member
121 title = song.get('title')
122 if not art.get('musicbrainz_artistid'):
123 art['musicbrainz_artistid'] = get_mbid(song, 'artist_foreign_ids')
124 if title not in titles:
126 yield Track(title=title, **art)
130 # vim: ai ts=4 sw=4 sts=4 expandtab