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421 lines
14 KiB
Python
421 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import division, absolute_import, print_function
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import re
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import json
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import base64
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import webbrowser
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import requests
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from beets import ui
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from beets.plugins import BeetsPlugin
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from beets.util import confit
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from beets.autotag.hooks import AlbumInfo, TrackInfo
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class SpotifyPlugin(BeetsPlugin):
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# Base URLs for the Spotify API
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# Documentation: https://developer.spotify.com/web-api
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oauth_token_url = 'https://accounts.spotify.com/api/token'
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open_track_url = 'http://open.spotify.com/track/'
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search_url = 'https://api.spotify.com/v1/search'
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album_url = 'https://api.spotify.com/v1/albums/'
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track_url = 'https://api.spotify.com/v1/tracks/'
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playlist_partial = 'spotify:trackset:Playlist:'
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def __init__(self):
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super(SpotifyPlugin, self).__init__()
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self.config.add(
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{
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'mode': 'list',
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'tiebreak': 'popularity',
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'show_failures': False,
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'artist_field': 'albumartist',
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'album_field': 'album',
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'track_field': 'title',
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'region_filter': None,
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'regex': [],
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'client_id': 'N3dliiOOTBEEFqCH5NDDUmF5Eo8bl7AN',
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'client_secret': '6DRS7k66h4643yQEbepPxOuxeVW0yZpk',
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'tokenfile': 'spotify_token.json',
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'source_weight': 0.5,
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'user_token': '',
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}
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)
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self.config['client_secret'].redact = True
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"""Path to the JSON file for storing the OAuth access token."""
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self.tokenfile = self.config['tokenfile'].get(
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confit.Filename(in_app_dir=True)
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)
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self.setup()
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def setup(self):
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"""
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Retrieve previously saved OAuth token or generate a new one.
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"""
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try:
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with open(self.tokenfile) as f:
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token_data = json.load(f)
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except IOError:
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self._authenticate()
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else:
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self.access_token = token_data['access_token']
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def _authenticate(self):
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"""
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Request an access token via the Client Credentials Flow:
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https://developer.spotify.com/documentation/general/guides/authorization-guide/#client-credentials-flow
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"""
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headers = {
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'Authorization': 'Basic {}'.format(
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base64.b64encode(
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':'.join(
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self.config[k].as_str()
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for k in ('client_id', 'client_secret')
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).encode()
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).decode()
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)
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}
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response = requests.post(
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self.oauth_token_url,
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data={'grant_type': 'client_credentials'},
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headers=headers,
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)
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try:
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response.raise_for_status()
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except requests.exceptions.HTTPError as e:
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raise ui.UserError(
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u'Spotify authorization failed: {}\n{}'.format(
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e, response.content
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)
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)
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self.access_token = response.json()['access_token']
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# Save the token for later use.
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self._log.debug(u'Spotify access token: {}', self.access_token)
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with open(self.tokenfile, 'w') as f:
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json.dump({'access_token': self.access_token}, f)
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@property
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def _auth_header(self):
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return {'Authorization': 'Bearer {}'.format(self.access_token)}
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def _handle_response(self, request_type, url, params=None):
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response = request_type(url, headers=self._auth_header, params=params)
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if response.status_code != 200:
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if u'token expired' in response.text:
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self._log.debug(
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'Spotify access token has expired. Reauthenticating.'
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)
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self._authenticate()
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self._handle_response(request_type, url, params=params)
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else:
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raise ui.UserError(u'Spotify API error:\n{}', response.text)
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return response
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def _get_spotify_id(self, url_type, id_):
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"""
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Parse a Spotify ID from its URL if necessary.
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:param url_type: Type of Spotify URL, either 'album' or 'track'
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:type url_type: str
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:return: Spotify ID
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:rtype: str
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"""
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# Spotify IDs consist of 22 alphanumeric characters
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# (zero-left-padded base62 representation of randomly generated UUID4)
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id_regex = r'(^|open\.spotify\.com/{}/)([0-9A-Za-z]{{22}})'
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self._log.debug(u'Searching for {} {}', url_type, id_)
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match = re.search(id_regex.format(url_type), id_)
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return match.group(2) if match else None
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def album_for_id(self, album_id):
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"""
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Fetches an album by its Spotify ID or URL and returns an
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AlbumInfo object or None if the album is not found.
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"""
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spotify_id = self._get_spotify_id('album', album_id)
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if spotify_id is None:
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return None
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response = self._handle_response(
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requests.get, self.album_url + spotify_id
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)
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response_data = response.json()
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artist, artist_id = self._get_artist(response_data['artists'])
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date_parts = [
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int(part) for part in response_data['release_date'].split('-')
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]
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release_date_precision = response_data['release_date_precision']
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if release_date_precision == 'day':
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year, month, day = date_parts
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elif release_date_precision == 'month':
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year, month = date_parts
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day = None
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elif release_date_precision == 'year':
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year = date_parts
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month = None
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day = None
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else:
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raise ui.UserError(
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u"Invalid `release_date_precision` returned "
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u"from Spotify API: '{}'".format(release_date_precision)
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)
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tracks = []
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for i, track_data in enumerate(response_data['tracks']['items']):
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track = self._get_track(track_data)
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track.index = i + 1
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tracks.append(track)
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return AlbumInfo(
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album=response_data['name'],
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album_id=album_id,
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artist=artist,
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artist_id=artist_id,
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tracks=tracks,
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albumtype=response_data['album_type'],
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va=len(response_data['artists']) == 1
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and artist.lower() == 'various artists',
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year=year,
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month=month,
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day=day,
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label=response_data['label'],
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data_source='Spotify',
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data_url=response_data['uri'],
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)
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def _get_track(self, track_data):
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"""
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Convert a Spotify track object dict to a TrackInfo object.
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:param track_data: Simplified track object
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(https://developer.spotify.com/documentation/web-api/reference/object-model/#track-object-simplified)
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:type track_data: dict
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:return: TrackInfo object for track
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:rtype: beets.autotag.hooks.TrackInfo
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"""
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artist, artist_id = self._get_artist(track_data['artists'])
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return TrackInfo(
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title=track_data['name'],
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track_id=track_data['id'],
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artist=artist,
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artist_id=artist_id,
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length=track_data['duration_ms'] / 1000,
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index=track_data['track_number'],
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medium_index=track_data['track_number'],
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data_source='Spotify',
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data_url=track_data['uri'],
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)
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def track_for_id(self, track_id):
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"""
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Fetches a track by its Spotify ID or URL and returns a
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TrackInfo object or None if the track is not found.
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:param track_id: Spotify ID or URL for the track
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:type track_id: str
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:return: TrackInfo object for track
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:rtype: beets.autotag.hooks.TrackInfo
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"""
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spotify_id = self._get_spotify_id('track', track_id)
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if spotify_id is None:
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return None
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response = self._handle_response(
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requests.get, self.track_url + spotify_id
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)
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return self._get_track(response.json())
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def _get_artist(self, artists):
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"""
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Returns an artist string (all artists) and an artist_id (the main
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artist) for a list of Spotify artist object dicts.
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:param artists: Iterable of simplified Spotify artist objects
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(https://developer.spotify.com/documentation/web-api/reference/object-model/#artist-object-simplified)
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:type artists: list[dict]
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:return: Normalized artist string
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:rtype: str
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"""
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artist_id = None
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artist_names = []
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for artist in artists:
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if not artist_id:
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artist_id = artist['id']
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name = artist['name']
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# Strip disambiguation number.
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name = re.sub(r' \(\d+\)$', '', name)
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# Move articles to the front.
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name = re.sub(r'^(.*?), (a|an|the)$', r'\2 \1', name, flags=re.I)
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artist_names.append(name)
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artist = ', '.join(artist_names).replace(' ,', ',') or None
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return artist, artist_id
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def commands(self):
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def queries(lib, opts, args):
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success = self.parse_opts(opts)
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if success:
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results = self.query_spotify(lib, ui.decargs(args))
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self.output_results(results)
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spotify_cmd = ui.Subcommand(
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'spotify', help=u'build a Spotify playlist'
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)
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spotify_cmd.parser.add_option(
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u'-m',
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u'--mode',
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action='store',
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help=u'"open" to open Spotify with playlist, '
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u'"list" to print (default)',
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)
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spotify_cmd.parser.add_option(
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u'-f',
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u'--show-failures',
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action='store_true',
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dest='show_failures',
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help=u'list tracks that did not match a Spotify ID',
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)
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spotify_cmd.func = queries
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return [spotify_cmd]
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def parse_opts(self, opts):
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if opts.mode:
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self.config['mode'].set(opts.mode)
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if opts.show_failures:
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self.config['show_failures'].set(True)
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if self.config['mode'].get() not in ['list', 'open']:
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self._log.warning(
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u'{0} is not a valid mode', self.config['mode'].get()
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)
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return False
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self.opts = opts
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return True
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def query_spotify(self, lib, query):
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results = []
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failures = []
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items = lib.items(query)
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if not items:
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self._log.debug(
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u'Your beets query returned no items, ' u'skipping spotify'
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)
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return
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self._log.info(u'Processing {0} tracks...', len(items))
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for item in items:
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# Apply regex transformations if provided
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for regex in self.config['regex'].get():
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if (
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not regex['field']
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or not regex['search']
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or not regex['replace']
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):
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continue
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value = item[regex['field']]
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item[regex['field']] = re.sub(
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regex['search'], regex['replace'], value
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)
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# Custom values can be passed in the config (just in case)
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artist = item[self.config['artist_field'].get()]
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album = item[self.config['album_field'].get()]
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query = item[self.config['track_field'].get()]
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query_keywords = '{} album:{} artist:{}'.format(
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query, album, artist
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)
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# Query the Web API for each track, look for the items' JSON data
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try:
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response = self._handle_response(
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requests.get,
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self.search_url,
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params={'q': query_keywords, 'type': 'track'},
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)
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except ui.UserError:
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failures.append(query_keywords)
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continue
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response_data = response.json()['tracks']['items']
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# Apply market filter if requested
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region_filter = self.config['region_filter'].get()
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if region_filter:
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response_data = [
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x
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for x in response_data
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if region_filter in x['available_markets']
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]
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# Simplest, take the first result
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chosen_result = None
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if (
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len(response_data) == 1
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or self.config['tiebreak'].get() == 'first'
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):
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self._log.debug(
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u'Spotify track(s) found, count: {0}', len(response_data)
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)
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chosen_result = response_data[0]
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elif len(response_data) > 1:
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# Use the popularity filter
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self._log.debug(
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u'Most popular track chosen, count: {0}',
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len(response_data),
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)
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chosen_result = max(
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response_data, key=lambda x: x['popularity']
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)
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if chosen_result:
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results.append(chosen_result)
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else:
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self._log.debug(
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u'No Spotify track found for the following query: {}',
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query_keywords,
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)
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failures.append(query_keywords)
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failure_count = len(failures)
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if failure_count > 0:
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if self.config['show_failures'].get():
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self._log.info(
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u'{0} track(s) did not match a Spotify ID:', failure_count
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)
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for track in failures:
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self._log.info(u'track: {0}', track)
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self._log.info(u'')
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else:
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self._log.warning(
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u'{0} track(s) did not match a Spotify ID;\n'
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u'use --show-failures to display',
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failure_count,
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)
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return results
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def output_results(self, results):
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if results:
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ids = [x['id'] for x in results]
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if self.config['mode'].get() == "open":
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self._log.info(u'Attempting to open Spotify with playlist')
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spotify_url = self.playlist_partial + ",".join(ids)
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webbrowser.open(spotify_url)
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else:
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for item in ids:
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print(self.open_track_url + item)
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else:
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self._log.warning(u'No Spotify tracks found from beets query')
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