openwebrx-clone/owrx/config/dynamic.py

65 lines
2.0 KiB
Python

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)]