PlexKodiConnect/resources/lib/playlists/__init__.py

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2018-07-12 05:24:27 +10:00
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Syncs Plex playlists <=> Kodi playlists with 3 main components:
kodi_playlist_monitor()
watchdog Observer checking whether Kodi playlists are changed
websocket(plex_id, status)
Hit with websocket answers from our background sync
full_sync()
Triggers a full re-sync of playlists
PlaylistError is thrown if anything wierd happens
"""
from logging import getLogger
from .common import Playlist, PlaylistError, PlaylistObserver
from . import pms, db, kodi_pl, plex_pl
from ..watchdog import events
from ..plex_api import API
from .. import utils
from .. import path_ops
from .. import variables as v
from .. import state
###############################################################################
LOG = getLogger('PLEX.playlists')
# Safety margin for playlist filesystem operations
FILESYSTEM_TIMEOUT = 1
# Which playlist formates are supported by PKC?
SUPPORTED_FILETYPES = (
'm3u',
# 'm3u8'
# 'pls',
# 'cue',
)
###############################################################################
def kodi_playlist_monitor():
"""
Monitors the Kodi playlist folder special://profile/playlist for the user.
Will thus catch all changes on the Kodi side of things.
Returns an watchdog Observer instance. Be sure to use
observer.stop() (and maybe observer.join()) to shut down properly
"""
event_handler = PlaylistEventhandler()
observer = PlaylistObserver(timeout=FILESYSTEM_TIMEOUT)
observer.schedule(event_handler, v.PLAYLIST_PATH, recursive=True)
observer.start()
return observer
def websocket(plex_id, status):
"""
Hit by librarysync to process websocket messages concerning playlists
"""
create = False
with state.LOCK_PLAYLISTS:
playlist = db.get_playlist(plex_id=plex_id)
if playlist and status == 9:
# Won't be able to download metadata of the deleted playlist
if sync_plex_playlist(playlist=playlist):
LOG.debug('Plex deletion of playlist detected: %s', playlist)
try:
kodi_pl.delete(playlist)
except PlaylistError:
pass
return
xml = pms.metadata(plex_id)
if xml is None:
LOG.debug('Could not download playlist %s, probably deleted',
plex_id)
return
if not sync_plex_playlist(xml=xml[0]):
return
api = API(xml[0])
try:
if playlist:
if api.updated_at() == playlist.plex_updatedat:
LOG.debug('Playlist with id %s already synced: %s',
plex_id, playlist)
else:
LOG.debug('Change of Plex playlist detected: %s',
playlist)
kodi_pl.delete(playlist)
create = True
elif not playlist and not status == 9:
LOG.debug('Creation of new Plex playlist detected: %s',
plex_id)
create = True
# To the actual work
if create:
kodi_pl.create(plex_id)
except PlaylistError:
pass
def full_sync():
"""
Full sync of playlists between Kodi and Plex. Returns True is successful,
False otherwise
"""
if not state.SYNC_PLAYLISTS:
LOG.debug('Not syncing playlists')
return True
LOG.info('Starting playlist full sync')
with state.LOCK_PLAYLISTS:
return _full_sync()
def _full_sync():
"""
Need to lock because we're messing with playlists
"""
# Get all Plex playlists
xml = pms.all_playlists()
if xml is None:
return False
# For each playlist, check Plex database to see whether we already synced
# before. If yes, make sure that hashes are identical. If not, sync it.
old_plex_ids = db.plex_playlist_ids()
for xml_playlist in xml:
api = API(xml_playlist)
try:
old_plex_ids.remove(api.plex_id())
except ValueError:
pass
if not sync_plex_playlist(xml=xml_playlist):
continue
playlist = db.get_playlist(plex_id=api.plex_id())
try:
if not playlist:
LOG.debug('New Plex playlist %s discovered: %s',
api.plex_id(), api.title())
kodi_pl.create(api.plex_id())
elif playlist.plex_updatedat != api.updated_at():
LOG.debug('Detected changed Plex playlist %s: %s',
api.plex_id(), api.title())
kodi_pl.delete(playlist)
kodi_pl.create(api.plex_id())
except PlaylistError:
LOG.info('Skipping playlist %s: %s', api.plex_id(), api.title())
# Get rid of old Plex playlists that were deleted on the Plex side
for plex_id in old_plex_ids:
playlist = db.get_playlist(plex_id=plex_id)
if playlist:
LOG.debug('Removing outdated Plex playlist %s from %s',
playlist.plex_name, playlist.kodi_path)
try:
kodi_pl.delete(playlist)
except PlaylistError:
LOG.debug('Skipping deletion of playlist %s: %s',
api.plex_id(), api.title())
# Look at all supported Kodi playlists. Check whether they are in the DB.
old_kodi_paths = db.kodi_playlist_paths()
for root, _, files in path_ops.walk(v.PLAYLIST_PATH):
for f in files:
path = path_ops.path.join(root, f)
try:
old_kodi_paths.remove(path)
except ValueError:
pass
if not sync_kodi_playlist(path):
continue
kodi_hash = utils.generate_file_md5(path)
playlist = db.get_playlist(path=path)
if playlist and playlist.kodi_hash == kodi_hash:
continue
try:
if not playlist:
LOG.debug('New Kodi playlist detected: %s', path)
playlist = Playlist()
playlist.kodi_path = path
playlist.kodi_hash = kodi_hash
plex_pl.create(playlist)
else:
LOG.debug('Changed Kodi playlist detected: %s', playlist)
plex_pl.delete(playlist)
playlist.kodi_hash = kodi_hash
plex_pl.create(playlist)
except PlaylistError:
LOG.info('Skipping Kodi playlist %s', path)
for kodi_path in old_kodi_paths:
playlist = db.get_playlist(kodi_path=kodi_path)
try:
plex_pl.delete(playlist)
except PlaylistError:
LOG.debug('Skipping deletion of playlist %s: %s',
playlist.plex_id, playlist.plex_name)
LOG.info('Playlist full sync done')
return True
def sync_kodi_playlist(path):
"""
Returns True if we should sync this Kodi playlist with path [unicode] to
Plex based on the playlist file name and the user settings, False otherwise
"""
if path.startswith(v.PLAYLIST_PATH_MIXED):
return False
try:
extension = path.rsplit('.', 1)[1].lower()
except IndexError:
return False
if extension not in SUPPORTED_FILETYPES:
return False
if not state.SYNC_SPECIFIC_KODI_PLAYLISTS:
return True
playlist = Playlist()
playlist.kodi_path = path
prefix = utils.settings('syncSpecificKodiPlaylistsPrefix').lower()
if playlist.kodi_filename.lower().startswith(prefix):
return True
LOG.debug('User chose to not sync Kodi playlist %s', path)
return False
def sync_plex_playlist(plex_id=None, xml=None, playlist=None):
"""
Returns True if we should sync this specific Plex playlist due to the
user settings (including a disabled music library), False if not.
Pass in either the plex_id or an xml (where API(xml) will be used)
"""
if not state.SYNC_SPECIFIC_PLEX_PLAYLISTS:
return True
if playlist:
# Mainly once we DELETED a Plex playlist that we're NOT supposed
# to sync
name = playlist.plex_name
typus = playlist.kodi_type
else:
if xml is None:
xml = pms.metadata(plex_id)
if xml is None:
LOG.info('Could not get Plex metadata for playlist %s',
plex_id)
return False
api = API(xml[0])
else:
api = API(xml)
name = api.title()
typus = v.KODI_PLAYLIST_TYPE_FROM_PLEX[api.playlist_type()]
if (not state.ENABLE_MUSIC and typus == v.PLEX_PLAYLIST_TYPE_AUDIO):
LOG.debug('Not synching Plex audio playlist')
return False
prefix = utils.settings('syncSpecificPlexPlaylistsPrefix').lower()
if name and name.lower().startswith(prefix):
return True
LOG.debug('User chose to not sync Plex playlist')
return False
class PlaylistEventhandler(events.FileSystemEventHandler):
"""
PKC eventhandler to monitor Kodi playlists safed to disk
"""
def dispatch(self, event):
"""
Dispatches events to the appropriate methods.
:param event:
The event object representing the file system event.
:type event:
:class:`FileSystemEvent`
"""
if not state.SYNC_PLAYLISTS:
# Sync is deactivated
return
path = event.dest_path if event.event_type == events.EVENT_TYPE_MOVED \
else event.src_path
if not sync_kodi_playlist(path):
return
_method_map = {
events.EVENT_TYPE_MODIFIED: self.on_modified,
events.EVENT_TYPE_MOVED: self.on_moved,
events.EVENT_TYPE_CREATED: self.on_created,
events.EVENT_TYPE_DELETED: self.on_deleted,
}
with state.LOCK_PLAYLISTS:
_method_map[event.event_type](event)
def on_created(self, event):
LOG.debug('on_created: %s', event.src_path)
old_playlist = db.get_playlist(path=event.src_path)
kodi_hash = utils.generate_file_md5(event.src_path)
if old_playlist and old_playlist.kodi_hash == kodi_hash:
LOG.debug('Playlist already in DB - skipping')
return
elif old_playlist:
LOG.debug('Playlist already in DB but it has been changed')
self.on_modified(event)
return
playlist = Playlist()
playlist.kodi_path = event.src_path
playlist.kodi_hash = kodi_hash
try:
plex_pl.create(playlist)
except PlaylistError:
pass
def on_modified(self, event):
LOG.debug('on_modified: %s', event.src_path)
old_playlist = db.get_playlist(path=event.src_path)
kodi_hash = utils.generate_file_md5(event.src_path)
if old_playlist and old_playlist.kodi_hash == kodi_hash:
LOG.debug('Nothing modified, playlist already in DB - skipping')
return
new_playlist = Playlist()
if old_playlist:
# Retain the name! Might've come from Plex
# (rename should fire on_moved)
new_playlist.plex_name = old_playlist.plex_name
plex_pl.delete(old_playlist)
new_playlist.kodi_path = event.src_path
new_playlist.kodi_hash = kodi_hash
try:
plex_pl.create(new_playlist)
except PlaylistError:
pass
def on_moved(self, event):
LOG.debug('on_moved: %s to %s', event.src_path, event.dest_path)
kodi_hash = utils.generate_file_md5(event.dest_path)
# First check whether we don't already have destination playlist in
# our DB. Just in case....
old_playlist = db.get_playlist(path=event.dest_path)
if old_playlist:
LOG.warning('Found target playlist already in our DB!')
new_event = events.FileModifiedEvent(event.dest_path)
self.on_modified(new_event)
return
# All good
old_playlist = db.get_playlist(path=event.src_path)
if not old_playlist:
LOG.debug('Did not have source path in the DB %s', event.src_path)
else:
plex_pl.delete(old_playlist)
new_playlist = Playlist()
new_playlist.kodi_path = event.dest_path
new_playlist.kodi_hash = kodi_hash
try:
plex_pl.create(new_playlist)
except PlaylistError:
pass
def on_deleted(self, event):
LOG.debug('on_deleted: %s', event.src_path)
playlist = db.get_playlist(path=event.src_path)
if not playlist:
LOG.debug('Playlist not found in DB for path %s', event.src_path)
else:
plex_pl.delete(playlist)