"""Helpers for amcrest component."""
from .const import DOMAIN


def service_signal(service, ident=None):
    """Encode service and identifier into signal."""
    signal = '{}_{}'.format(DOMAIN, service)
    if ident:
        signal += '_{}'.format(ident.replace('.', '_'))
    return signal


def log_update_error(logger, action, name, entity_type, error):
    """Log an update error."""
    logger.error(
        'Could not %s %s %s due to error: %s',
        action, name, entity_type, error.__class__.__name__)