helper.py

Go to the documentation of this file.

"""Camera helper functions."""
 
from __future__ import annotations
 
from typing import TYPE_CHECKING
 
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import HomeAssistantError
 
from .const import DATA_COMPONENT
 
if TYPE_CHECKING:
    from . import Camera
 
 
def get_camera_from_entity_id(hass: HomeAssistant, entity_id: str) -> Camera:
    """Get camera component from entity_id."""
    component = hass.data.get(DATA_COMPONENT)
    if component is None:
        raise HomeAssistantError("Camera integration not set up")
 
    if (camera := component.get_entity(entity_id)) is None:
        raise HomeAssistantError("Camera not found")
 
    if not camera.is_on:
        raise HomeAssistantError("Camera is off")
 
    return camera