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__init__.py
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__init__.py
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import urllib
import urlparse
import libsonic
def force_list(value):
"""
Coerce the input value to a list.
If `value` is `None`, return an empty list. If it is a single value, create
a new list with that element on index 0.
:param value: Input value to coerce.
:return: Value as list.
:rtype: list
"""
if value is None:
return []
elif type(value) == list:
return value
else:
return [value]
class SubsonicClient(libsonic.Connection):
"""
Extend `libsonic.Connection` with new features and fix a few issues.
- Parse URL for host and port for constructor.
- Make sure API results are of of uniform type.
- Provide methods to intercept URL of binary requests.
- Add order property to playlist items.
- Add conventient `walk_*' methods to iterate over the API responses.
"""
def __init__(self, url, username, password, apiversion, insecure):
"""
Construct a new SubsonicClient.
:param str url: Full URL (including scheme) of the Subsonic server.
:param str username: Username of the server.
:param str password: Password of the server.
"""
self.intercept_url = False
# Parse Subsonic URL
parts = urlparse.urlparse(url)
scheme = parts.scheme or "http"
# Make sure there is hostname
if not parts.hostname:
raise ValueError("Expected hostname for URL: %s" % url)
# Validate scheme
if scheme not in ("http", "https"):
raise ValueError("Unexpected scheme '%s' for URL: %s" % (
scheme, url))
# Pick a default port
host = "%s://%s" % (scheme, parts.hostname)
port = parts.port or {"http": 80, "https": 443}[scheme]
# Invoke original constructor
super(SubsonicClient, self).__init__(
host, username, password, port=port, apiVersion=apiversion, insecure=insecure)
def getIndexes(self, *args, **kwargs):
"""
Improve the getIndexes method. Ensures IDs are integers.
"""
def _artists_iterator(artists):
for artist in force_list(artists):
artist["id"] = int(artist["id"])
yield artist
def _index_iterator(index):
for index in force_list(index):
index["artist"] = list(_artists_iterator(index.get("artist")))
yield index
def _children_iterator(children):
for child in force_list(children):
child["id"] = int(child["id"])
if "parent" in child:
child["parent"] = int(child["parent"])
if "coverArt" in child:
child["coverArt"] = int(child["coverArt"])
if "artistId" in child:
child["artistId"] = int(child["artistId"])
if "albumId" in child:
child["albumId"] = int(child["albumId"])
yield child
response = super(SubsonicClient, self).getIndexes(*args, **kwargs)
response["indexes"] = response.get("indexes", {})
response["indexes"]["index"] = list(
_index_iterator(response["indexes"].get("index")))
response["indexes"]["child"] = list(
_children_iterator(response["indexes"].get("child")))
return response
def getPlaylists(self, *args, **kwargs):
"""
Improve the getPlaylists method. Ensures IDs are integers.
"""
def _playlists_iterator(playlists):
for playlist in force_list(playlists):
playlist["id"] = int(playlist["id"])
yield playlist
response = super(SubsonicClient, self).getPlaylists(*args, **kwargs)
response["playlists"]["playlist"] = list(
_playlists_iterator(response["playlists"].get("playlist")))
return response
def getPlaylist(self, *args, **kwargs):
"""
Improve the getPlaylist method. Ensures IDs are integers and add an
order property to each entry.
"""
def _entries_iterator(entries):
for order, entry in enumerate(force_list(entries), start=1):
entry["id"] = int(entry["id"])
entry["order"] = order
yield entry
response = super(SubsonicClient, self).getPlaylist(*args, **kwargs)
response["playlist"]["entry"] = list(
_entries_iterator(response["playlist"].get("entry")))
return response
def getArtists(self, *args, **kwargs):
"""
Improve the getArtists method. Ensures IDs are integers.
"""
def _artists_iterator(artists):
for artist in force_list(artists):
artist["id"] = int(artist["id"])
yield artist
def _index_iterator(index):
for index in force_list(index):
index["artist"] = list(_artists_iterator(index.get("artist")))
yield index
response = super(SubsonicClient, self).getArtists(*args, **kwargs)
response["artists"] = response.get("artists", {})
response["artists"]["index"] = list(
_index_iterator(response["artists"].get("index")))
return response
def getArtist(self, *args, **kwargs):
"""
Improve the getArtist method. Ensures IDs are integers.
"""
def _albums_iterator(albums):
for album in force_list(albums):
album["id"] = int(album["id"])
if "artistId" in album:
album["artistId"] = int(album["artistId"])
yield album
response = super(SubsonicClient, self).getArtist(*args, **kwargs)
response["artist"]["album"] = list(
_albums_iterator(response["artist"].get("album")))
return response
def getMusicDirectory(self, *args, **kwargs):
"""
Improve the getMusicDirectory method. Ensures IDs are integers.
"""
def _children_iterator(children):
for child in force_list(children):
child["id"] = int(child["id"])
if "parent" in child:
child["parent"] = int(child["parent"])
if "coverArt" in child:
child["coverArt"] = int(child["coverArt"])
if "artistId" in child:
child["artistId"] = int(child["artistId"])
if "albumId" in child:
child["albumId"] = int(child["albumId"])
yield child
response = super(SubsonicClient, self).getMusicDirectory(
*args, **kwargs)
response["directory"]["child"] = list(
_children_iterator(response["directory"].get("child")))
return response
def getAlbum(self, *args, **kwargs):
"""
Improve the getAlbum method. Ensures the IDs are real integers.
"""
def _songs_iterator(songs):
for song in force_list(songs):
song["id"] = int(song["id"])
yield song
response = super(SubsonicClient, self).getAlbum(*args, **kwargs)
response["album"]["song"] = list(
_songs_iterator(response["album"].get("song")))
return response
def getAlbumList2(self, *args, **kwargs):
"""
Improve the getAlbumList2 method. Ensures the IDs are real integers.
"""
def _album_iterator(albums):
for album in force_list(albums):
album["id"] = int(album["id"])
yield album
response = super(SubsonicClient, self).getAlbumList2(*args, **kwargs)
response["albumList2"]["album"] = list(
_album_iterator(response["albumList2"].get("album")))
return response
def getStarred(self, *args, **kwargs):
"""
Improve the getStarred method. Ensures the IDs are real integers.
"""
def _song_iterator(songs):
for song in force_list(songs):
song["id"] = int(song["id"])
yield song
response = super(SubsonicClient, self).getStarred(*args, **kwargs)
response["starred"]["song"] = list(
_song_iterator(response["starred"].get("song")))
return response
def getCoverArtUrl(self, *args, **kwargs):
"""
Return an URL to the cover art.
"""
self.intercept_url = True
url = self.getCoverArt(*args, **kwargs)
self.intercept_url = False
return url
def streamUrl(self, *args, **kwargs):
"""
Return an URL to the file to stream.
"""
self.intercept_url = True
url = self.stream(*args, **kwargs)
self.intercept_url = False
return url
def _doBinReq(self, *args, **kwargs):
"""
Intercept request URL to provide the URL of the item that is requested.
If the URL is intercepted, the request is not executed. A username and
password is added to provide direct access to the stream.
"""
if self.intercept_url:
parts = list(urlparse.urlparse(
args[0].get_full_url() + "?" + args[0].data))
parts[4] = dict(urlparse.parse_qsl(parts[4]))
parts[4].update({"u": self.username, "p": self.password})
parts[4] = urllib.urlencode(parts[4])
return urlparse.urlunparse(parts)
else:
return super(SubsonicClient, self)._doBinReq(*args, **kwargs)
def walk_index(self):
"""
Request Subsonic's index and iterate each item.
"""
response = self.getIndexes()
for index in response["indexes"]["index"]:
for index in index["artist"]:
for item in self.walk_directory(index["id"]):
yield item
for child in response["indexes"]["child"]:
if child.get("isDir"):
for child in self.walk_directory(child["id"]):
yield child
else:
yield child
def walk_playlists(self):
"""
Request Subsonic's playlists and iterate over each item.
"""
response = self.getPlaylists()
for child in response["playlists"]["playlist"]:
yield child
def walk_playlist(self, playlist_id):
"""
Request Subsonic's playlist items and iterate over each item.
"""
response = self.getPlaylist(playlist_id)
for child in response["playlist"]["entry"]:
yield child
def walk_starred(self):
"""
Request Subsonic's starred songs and iterate over each item.
"""
response = self.getStarred()
for song in response["starred"]["song"]:
yield song
def walk_directory(self, directory_id):
"""
Request a Subsonic music directory and iterate over each item.
"""
response = self.getMusicDirectory(directory_id)
for child in response["directory"]["child"]:
if child.get("isDir"):
for child in self.walk_directory(child["id"]):
yield child
else:
yield child
def walk_artist(self, artist_id):
"""
Request a Subsonic artist and iterate over each album.
"""
response = self.getArtist(artist_id)
for child in response["artist"]["album"]:
yield child
def walk_artists(self):
"""
Request all artists and iterate over each item.
"""
response = self.getArtists()
for index in response["artists"]["index"]:
for artist in index["artist"]:
yield artist
def walk_genres(self):
"""
Request all genres and iterate over each item.
"""
response = self.getGenres()
for genre in response["genres"]["genre"]:
yield genre
def walk_album_list_genre(self, genre):
"""
Request all albums for a given genre and iterate over each album.
"""
offset = 0
while True:
response = self.getAlbumList2(
ltype="byGenre", genre=genre, size=500, offset=offset)
if not response["albumList2"]["album"]:
break
for album in response["albumList2"]["album"]:
yield album
offset += 500
def walk_album(self, album_id):
"""
Request an alum and iterate over each item.
"""
response = self.getAlbum(album_id)
for song in response["album"]["song"]:
yield song
def walk_random_songs(self, size, genre=None, from_year=None,
to_year=None):
"""
Request random songs by genre and/or year and iterate over each song.
"""
response = self.getRandomSongs(
size=size, genre=genre, fromYear=from_year, toYear=to_year)
for song in response["randomSongs"]["song"]:
yield song