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))
80 id='musicbrainz:artist:{0}'.format(artist.mbid))
82 payload.update(name=artist.name)
83 payload.update(bucket='id:musicbrainz')
84 payload.update(results=100)
87 aid = payload.pop('id')
88 payload.update(artist_id=aid)
90 name = payload.pop('name')
91 payload.update(artist=name)
92 payload.update(results=100)
93 payload.update(sort='song_hotttnesss-desc')
94 # > hashing the URL into a cache key
95 # return a sorted list of 2-tuple to have consistent cache
96 return sorted(payload.items(), key=lambda param: param[0])
98 def get_similar(self, artist=None):
99 """Fetch similar artists
101 payload = self._forge_payload(artist)
103 ressource = '{0}/artist/similar'.format(SimaEch.root_url)
104 ans = self.http(ressource, payload)
105 self._controls_answer(ans.json())
106 for art in ans.json().get('response').get('artists'):
108 yield Artist(mbid=mbid, name=art.get('name'))
110 def get_toptrack(self, artist=None):
111 """Fetch artist top tracks
113 payload = self._forge_payload(artist, top=True)
115 ressource = '{0}/song/search'.format(SimaEch.root_url)
116 ans = self.http(ressource, payload)
117 self._controls_answer(ans.json())
120 'artist': artist.name,
121 'musicbrainz_artistid': artist.mbid,
123 for song in ans.json().get('response').get('songs'):
124 title = song.get('title')
125 if not art.get('musicbrainz_artistid'):
126 art['musicbrainz_artistid'] = get_mbid(song, 'artist_foreign_ids')
127 if title not in titles:
129 yield Track(title=title, **art)
133 # vim: ai ts=4 sw=4 sts=4 expandtab