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core/homeassistant/components/labs/__init__.py
2025-11-26 09:10:19 +01:00

125 lines
4.3 KiB
Python

"""The Home Assistant Labs integration.
This integration provides preview features that can be toggled on/off by users.
Integrations can register lab preview features in their manifest.json which will appear
in the Home Assistant Labs UI for users to enable or disable.
"""
from __future__ import annotations
import logging
from homeassistant.core import HomeAssistant
from homeassistant.generated.labs import LABS_PREVIEW_FEATURES
from homeassistant.helpers import config_validation as cv
from homeassistant.helpers.storage import Store
from homeassistant.helpers.typing import ConfigType
from homeassistant.loader import async_get_custom_components
from .const import DOMAIN, LABS_DATA, STORAGE_KEY, STORAGE_VERSION
from .models import LabPreviewFeature, LabsData, LabsStoreData, NativeLabsStoreData
from .websocket_api import async_setup as async_setup_ws_api
_LOGGER = logging.getLogger(__name__)
CONFIG_SCHEMA = cv.config_entry_only_config_schema(DOMAIN)
__all__ = []
async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
"""Set up the Labs component."""
store: Store[NativeLabsStoreData] = Store(
hass, STORAGE_VERSION, STORAGE_KEY, private=True
)
data = LabsStoreData.from_store_format(await store.async_load())
# Scan ALL integrations for lab preview features (loaded or not)
lab_preview_features = await _async_scan_all_preview_features(hass)
# Clean up preview features that no longer exist
if lab_preview_features:
valid_keys = {
(pf.domain, pf.preview_feature) for pf in lab_preview_features.values()
}
stale_keys = data.preview_feature_status - valid_keys
if stale_keys:
_LOGGER.debug(
"Removing %d stale preview features: %s",
len(stale_keys),
stale_keys,
)
data.preview_feature_status -= stale_keys
await store.async_save(data.to_store_format())
hass.data[LABS_DATA] = LabsData(
store=store,
data=data,
preview_features=lab_preview_features,
)
async_setup_ws_api(hass)
return True
def _populate_preview_features(
preview_features: dict[str, LabPreviewFeature],
domain: str,
labs_preview_features: dict[str, dict[str, str]],
is_built_in: bool = True,
) -> None:
"""Populate preview features dictionary from integration preview_features.
Args:
preview_features: Dictionary to populate
domain: Integration domain
labs_preview_features: Dictionary of preview feature definitions from manifest
is_built_in: Whether this is a built-in integration
"""
for preview_feature_key, preview_feature_data in labs_preview_features.items():
preview_feature = LabPreviewFeature(
domain=domain,
preview_feature=preview_feature_key,
is_built_in=is_built_in,
feedback_url=preview_feature_data.get("feedback_url"),
learn_more_url=preview_feature_data.get("learn_more_url"),
report_issue_url=preview_feature_data.get("report_issue_url"),
)
preview_features[preview_feature.full_key] = preview_feature
async def _async_scan_all_preview_features(
hass: HomeAssistant,
) -> dict[str, LabPreviewFeature]:
"""Scan ALL available integrations for lab preview features (loaded or not)."""
preview_features: dict[str, LabPreviewFeature] = {}
# Load pre-generated built-in lab preview features (already includes all data)
for domain, domain_preview_features in LABS_PREVIEW_FEATURES.items():
_populate_preview_features(
preview_features, domain, domain_preview_features, is_built_in=True
)
# Scan custom components
custom_integrations = await async_get_custom_components(hass)
_LOGGER.debug(
"Loaded %d built-in + scanning %d custom integrations for lab preview features",
len(preview_features),
len(custom_integrations),
)
for integration in custom_integrations.values():
if labs_preview_features := integration.preview_features:
_populate_preview_features(
preview_features,
integration.domain,
labs_preview_features,
is_built_in=False,
)
_LOGGER.debug("Loaded %d total lab preview features", len(preview_features))
return preview_features