from owrx.config.core import CoreConfig from owrx.config.migration import Migrator from owrx.property import PropertyLayer from owrx.jsons import Encoder import json class DynamicConfig(PropertyLayer): _deleted = object() def __init__(self): super().__init__() try: with open(DynamicConfig._getSettingsFile(), "r") as f: for k, v in json.load(f).items(): if isinstance(v, dict): self[k] = DynamicConfig._toLayer(v) else: self[k] = v except FileNotFoundError: pass Migrator.migrate(self) @staticmethod def _toLayer(dictionary: dict): layer = PropertyLayer() for k, v in dictionary.items(): if isinstance(v, dict): layer[k] = DynamicConfig._toLayer(v) else: layer[k] = v return layer @staticmethod def _getSettingsFile(): coreConfig = CoreConfig() return "{data_directory}/settings.json".format(data_directory=coreConfig.get_data_directory()) def store(self): # don't write directly to file to avoid corruption on exceptions jsonContent = json.dumps(self.__dict__(), indent=4, cls=Encoder) with open(DynamicConfig._getSettingsFile(), "w") as file: file.write(jsonContent) def __delitem__(self, key): self.__setitem__(key, DynamicConfig._deleted) def __contains__(self, item): if not super().__contains__(item): return False if super().__getitem__(item) is DynamicConfig._deleted: return False return True def __getitem__(self, item): if self.__contains__(item): return super().__getitem__(item) raise KeyError('Key "{key}" does not exist'.format(key=item)) def __dict__(self): return {k: v for k, v in super().__dict__().items() if v is not DynamicConfig._deleted} def keys(self): return [k for k in super().keys() if self.__contains__(k)]