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supysonic/supysonic/lastfm.py
2019-12-23 16:23:57 +01:00

115 lines
3.4 KiB
Python

# coding: utf-8
#
# This file is part of Supysonic.
# Supysonic is a Python implementation of the Subsonic server API.
#
# Copyright (C) 2013-2018 Alban 'spl0k' Féron
#
# Distributed under terms of the GNU AGPLv3 license.
import hashlib
import logging
import requests
logger = logging.getLogger(__name__)
class LastFm:
def __init__(self, config, user):
if config["api_key"] is not None and config["secret"] is not None:
self.__api_key = config["api_key"]
self.__api_secret = config["secret"].encode("utf-8")
self.__enabled = True
else:
self.__enabled = False
self.__user = user
def link_account(self, token):
if not self.__enabled:
return False, "No API key set"
res = self.__api_request(False, method="auth.getSession", token=token)
if not res:
return False, "Error connecting to LastFM"
elif "error" in res:
return False, "Error %i: %s" % (res["error"], res["message"])
else:
self.__user.lastfm_session = res["session"]["key"]
self.__user.lastfm_status = True
return True, "OK"
def unlink_account(self):
self.__user.lastfm_session = None
self.__user.lastfm_status = True
def now_playing(self, track):
if not self.__enabled:
return
self.__api_request(
True,
method="track.updateNowPlaying",
artist=track.album.artist.name,
track=track.title,
album=track.album.name,
trackNumber=track.number,
duration=track.duration,
)
def scrobble(self, track, ts):
if not self.__enabled:
return
self.__api_request(
True,
method="track.scrobble",
artist=track.album.artist.name,
track=track.title,
album=track.album.name,
timestamp=ts,
trackNumber=track.number,
duration=track.duration,
)
def __api_request(self, write, **kwargs):
if not self.__enabled:
return
if write:
if not self.__user.lastfm_session or not self.__user.lastfm_status:
return
kwargs["sk"] = self.__user.lastfm_session
kwargs["api_key"] = self.__api_key
sig_str = b""
for k, v in sorted(kwargs.items()):
k = k.encode("utf-8")
v = v.encode("utf-8") if isinstance(v, str) else str(v).encode("utf-8")
sig_str += k + v
sig = hashlib.md5(sig_str + self.__api_secret).hexdigest()
kwargs["api_sig"] = sig
kwargs["format"] = "json"
try:
if write:
r = requests.post(
"https://ws.audioscrobbler.com/2.0/", data=kwargs, timeout=5
)
else:
r = requests.get(
"https://ws.audioscrobbler.com/2.0/", params=kwargs, timeout=5
)
except requests.exceptions.RequestException as e:
logger.warning("Error while connecting to LastFM: " + str(e))
return None
json = r.json()
if "error" in json:
if json["error"] in (9, "9"):
self.__user.lastfm_status = False
logger.warning("LastFM error %i: %s" % (json["error"], json["message"]))
return json