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mirror of https://github.com/home-assistant/core synced 2024-09-06 10:29:55 +02:00
ha-core/homeassistant/helpers/entity_values.py
2022-01-11 13:33:25 -08:00

55 lines
1.6 KiB
Python

"""A class to hold entity values."""
from __future__ import annotations
from collections import OrderedDict
import fnmatch
import re
from typing import Any
from homeassistant.core import split_entity_id
class EntityValues:
"""Class to store entity id based values."""
def __init__(
self,
exact: dict[str, dict[str, str]] | None = None,
domain: dict[str, dict[str, str]] | None = None,
glob: dict[str, dict[str, str]] | None = None,
) -> None:
"""Initialize an EntityConfigDict."""
self._cache: dict[str, dict[str, str]] = {}
self._exact = exact
self._domain = domain
if glob is None:
compiled: dict[re.Pattern[str], Any] | None = None
else:
compiled = OrderedDict()
for key, value in glob.items():
compiled[re.compile(fnmatch.translate(key))] = value
self._glob = compiled
def get(self, entity_id: str) -> dict[str, str]:
"""Get config for an entity id."""
if entity_id in self._cache:
return self._cache[entity_id]
domain, _ = split_entity_id(entity_id)
result = self._cache[entity_id] = {}
if self._domain is not None and domain in self._domain:
result.update(self._domain[domain])
if self._glob is not None:
for pattern, values in self._glob.items():
if pattern.match(entity_id):
result.update(values)
if self._exact is not None and entity_id in self._exact:
result.update(self._exact[entity_id])
return result