-# -*- coding: utf-8 -*-
-
-# Copyright (c) 2014 Jack Kaliko <kaliko@azylum.org>
-#
-# This program 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.
-#
-# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
-#
-#
-
-"""
-Consume EchoNest web service
-"""
-
-__version__ = '0.0.5'
-__author__ = 'Jack Kaliko'
-
-
-
-from sima import ECH
-from sima.lib.meta import Artist
-from sima.lib.track import Track
-from sima.lib.http import HttpClient
-from sima.utils.utils import WSError, WSNotFound
-from sima.utils.utils import getws
-if len(ECH.get('apikey')) == 23: # simple hack allowing imp.reload
- getws(ECH)
-
-
-def get_mbid(obj, foreign='foreign_ids'):
- if foreign in obj:
- for frgnid in obj.get(foreign):
- if frgnid.get('catalog') == 'musicbrainz':
- return frgnid.get('foreign_id').split(':')[2]
- return None
-
-
-class SimaEch:
- """EchoNest http client
- """
- root_url = 'http://{host}/api/{version}'.format(**ECH)
- name = 'EchoNest'
- cache = False
- """HTTP cache to use, in memory or persitent.
-
- :param BaseCache cache: Set a cache, defaults to `False`.
- """
- stats = {'etag':0,
- 'ccontrol':0,
- 'minrl':120,
- 'total':0}
-
- def __init__(self):
- self.http = HttpClient(cache=self.cache, stats=self.stats)
-
- def _controls_answer(self, ans):
- """Controls answer.
- """
- status = ans.get('response').get('status')
- code = status.get('code')
- if code is 0:
- return True
- if code is 5:
- raise WSNotFound('Artist not found')
- raise WSError(status.get('message'))
-
- def _forge_payload(self, artist, top=False):
- """Build payload
- """
- payload = {'api_key': ECH.get('apikey')}
- if not isinstance(artist, Artist):
- raise TypeError('"{0!r}" not an Artist object'.format(artist))
- if artist.mbid:
- payload.update(id='musicbrainz:artist:{0}'.format(artist.mbid))
- else:
- payload.update(name=artist.name)
- payload.update(bucket='id:musicbrainz')
- payload.update(results=100)
- if top:
- if artist.mbid:
- aid = payload.pop('id')
- payload.update(artist_id=aid)
- else:
- name = payload.pop('name')
- payload.update(artist=name)
- payload.update(results=100)
- payload.update(sort='song_hotttnesss-desc')
- # > hashing the URL into a cache key
- # return a sorted list of 2-tuple to have consistent cache
- return sorted(payload.items(), key=lambda param: param[0])
-
- def get_similar(self, artist):
- """Fetch similar artists
-
- :param sima.lib.meta.Artist artist: `Artist` to fetch similar artists from
- :returns: generator of :class:`sima.lib.meta.Artist`
- """
- payload = self._forge_payload(artist)
- # Construct URL
- ressource = '{0}/artist/similar'.format(SimaEch.root_url)
- ans = self.http(ressource, payload)
- self._controls_answer(ans.json()) # pylint: disable=no-member
- for art in ans.json().get('response').get('artists'): # pylint: disable=no-member
- mbid = get_mbid(art)
- yield Artist(mbid=mbid, name=art.get('name'))
-
- def get_toptrack(self, artist):
- """Fetch artist top tracks
-
- :param sima.lib.meta.Artist artist: `Artist` to fetch top tracks from
- :returns: generator of :class:`sima.lib.track.Track`
- """
- payload = self._forge_payload(artist, top=True)
- # Construct URL
- ressource = '{0}/song/search'.format(SimaEch.root_url)
- ans = self.http(ressource, payload)
- self._controls_answer(ans.json()) # pylint: disable=no-member
- titles = list()
- art = {'artist': artist.name,
- 'musicbrainz_artistid': artist.mbid,}
- for song in ans.json().get('response').get('songs'): # pylint: disable=no-member
- title = song.get('title')
- if not art.get('musicbrainz_artistid'):
- art['musicbrainz_artistid'] = get_mbid(song, 'artist_foreign_ids')
- if title not in titles:
- titles.append(title)
- yield Track(title=title, **art)
-
-
-# VIM MODLINE
-# vim: ai ts=4 sw=4 sts=4 expandtab
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