text: # -*- coding: utf-8 -*-
  
  from __future__ import unicode_literals
  
  from colorama import Fore, Style
  from spotify_ripper.utils import *
  import os
  import json
  import codecs
  import copy
  import spotify
  
  
  class Sync(object):
  
      def __init__(self, args, ripper):
          self.args = args
          self.ripper = ripper
  
      def sync_lib_path(self, playlist):
          args = self.args
  
          # get playlist_id
          uri_tokens = playlist.link.uri.split(':')
          if len(uri_tokens) != 5:
              return None
  
          # lib path
          if args.settings is not None:
              lib_path = os.path.join(norm_path(args.settings[0]), "Sync")
          else:
              lib_path = os.path.join(default_settings_dir(), "Sync")
  
          if not path_exists(lib_path):
              os.makedirs(enc_str(lib_path))
  
          return os.path.join(enc_str(lib_path), enc_str(uri_tokens[4] + ".json"))
  
      def save_sync_library(self, playlist, lib):
          args = self.args
          lib_path = self.sync_lib_path(playlist)
  
          encoding = "ascii" if args.ascii else "utf-8"
          with codecs.open(lib_path, 'w', encoding) as lib_file:
              lib_file.write(
                  json.dumps(lib, ensure_ascii=args.ascii,
                             indent=4, separators=(',', ': ')))
  
      def load_sync_library(self, playlist):
          args = self.args
          lib_path = self.sync_lib_path(playlist)
  
          if os.path.exists(lib_path):
              encoding = "ascii" if args.ascii else "utf-8"
              with codecs.open(lib_path, 'r', encoding) as lib_file:
                  return json.loads(lib_file.read())
          else:
              return {}
  
      def sync_playlist(self, playlist):
          args = self.args
          lib = self.load_sync_library(playlist)
          new_lib = {}
  
          print("Syncing playlist " + to_ascii(playlist.name))
  
          # remove any missing files from the lib or playlist
          uris = set([t.link.uri for t in playlist.tracks])
          copy_lib = copy.deepcopy(lib)
          for uri, file_path in lib.items():
              file_path = enc_str(file_path)
              if not os.path.exists(file_path):
                  del copy_lib[uri]
              elif uri not in uris:
                  os.remove(file_path)
                  del copy_lib[uri]
          lib = copy_lib
  
          # check if we need to rename any songs already ripped
          for idx, track in enumerate(playlist.tracks):
              try:
                  track.load()
                  if track.availability != 1:
                      continue
  
                  audio_file = self.ripper.format_track_path(idx, track)
  
                  # rename the ripped file if needed
                  if track.link.uri in lib:
                      if lib[track.link.uri] != audio_file:
                          os.rename(lib[track.link.uri], audio_file)
  
                  # add file to new lib
                  new_lib[track.link.uri] = audio_file
  
              except spotify.Error as e:
                  continue
  
          # save new lib
          self.save_sync_library(playlist, new_lib)
  