"""Format error response."""

from abacus_common_data.currency import Currency
from owsresponse import response

from payment.constants.error import ERROR_UNKNOWN_CURRENCY


def validate_currency(currency_code, raise_on_error=False):
    """Validate whether given currency_code is valid."""
    try:
        Currency(currency_code)
    except KeyError:
        if raise_on_error:
            raise ValueError(ERROR_UNKNOWN_CURRENCY.format(code=currency_code))
        return validation_error(ERROR_UNKNOWN_CURRENCY.format(code=currency_code))


def validation_error(flat_error_message=None, status_code=400, **kwargs):
    """Format error response."""
    message = flat_error_message or kwargs
    return response.create_error_response(
        code='error', message=message, status=status_code
    )