"""Helper methods."""

from lib import constants
from lib.utils import event, ows

PARENT_TABLE_NAME = 'statement_period'


def get_event_from_params(dag_run, **kwargs):
    """Get event from params passed to task callbacks."""
    abacus_event = event.get_abacus_event(dag_run, **kwargs)
    event.validate_event_for_handler(
        abacus_event,
        target_type=constants.DAG_APPLY_ADJUSTMENTS_TARGET_TYPE,
        event_name=constants.DAG_APPLY_ADJUSTMENTS_EVENT_NAME
    )
    return abacus_event


def get_abacus_state(action_name: str, statement_period_id: int) -> dict:
    """Find specified action in list of contract actions.

    Args:
        action_name (str): name of the action for to get details
        statement_period_id (int): ID of the statement_period

    Returns:
        the specified action details
    """
    abacus_states = ows.get_abacus_states(PARENT_TABLE_NAME, statement_period_id)
    action_state = next(
        (action for action in abacus_states if action['action_name'] == action_name),
        None
    )

    if not action_state:
        raise ValueError(f'{action_name} state not found')

    return action_state