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# This file is part of beets.
# Copyright 2016, Heinz Wiesinger.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
"""Synchronize information from music player libraries"""
from abc import ABCMeta, abstractmethod
from importlib import import_module
from confuse import ConfigValueError
from beets import ui
from beets.plugins import BeetsPlugin
METASYNC_MODULE = "beetsplug.metasync"
# Dictionary to map the MODULE and the CLASS NAME of meta sources
SOURCES = {
"amarok": "Amarok",
"itunes": "Itunes",
}
class MetaSource(metaclass=ABCMeta):
def __init__(self, config, log):
self.item_types = {}
self.config = config
self._log = log
@abstractmethod
def sync_from_source(self, item):
pass
def load_meta_sources():
"""Returns a dictionary of all the MetaSources
E.g., {'itunes': Itunes} with isinstance(Itunes, MetaSource) true
"""
meta_sources = {}
for module_path, class_name in SOURCES.items():
module = import_module(f"{METASYNC_MODULE}.{module_path}")
meta_sources[class_name.lower()] = getattr(module, class_name)
return meta_sources
META_SOURCES = load_meta_sources()
def load_item_types():
"""Returns a dictionary containing the item_types of all the MetaSources"""
item_types = {}
for meta_source in META_SOURCES.values():
item_types.update(meta_source.item_types)
return item_types
class MetaSyncPlugin(BeetsPlugin):
item_types = load_item_types()
def __init__(self):
super().__init__()
def commands(self):
cmd = ui.Subcommand(
"metasync", help="update metadata from music player libraries"
)
cmd.parser.add_option(
"-p",
"--pretend",
action="store_true",
help="show all changes but do nothing",
)
cmd.parser.add_option(
"-s",
"--source",
default=[],
action="append",
dest="sources",
help="comma-separated list of sources to sync",
)
cmd.parser.add_format_option()
cmd.func = self.func
return [cmd]
def func(self, lib, opts, args):
"""Command handler for the metasync function."""
pretend = opts.pretend
sources = []
for source in opts.sources:
sources.extend(source.split(","))
sources = sources or self.config["source"].as_str_seq()
meta_source_instances = {}
items = lib.items(args)
# Avoid needlessly instantiating meta sources (can be expensive)
if not items:
self._log.info("No items found matching query")
return
# Instantiate the meta sources
for player in sources:
try:
cls = META_SOURCES[player]
except KeyError:
self._log.error("Unknown metadata source '{}'", player)
try:
meta_source_instances[player] = cls(self.config, self._log)
except (ImportError, ConfigValueError) as e:
self._log.error(
"Failed to instantiate metadata source {!r}: {}", player, e
)
# Avoid needlessly iterating over items
if not meta_source_instances:
self._log.error("No valid metadata sources found")
return
# Sync the items with all of the meta sources
for item in items:
for meta_source in meta_source_instances.values():
meta_source.sync_from_source(item)
changed = ui.show_model_changes(item)
if changed and not pretend:
item.store()
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