"""Model validators."""

from sukimu import exceptions


def enum(*values):
    """Enum validator.

    Ensure the value passed is part of a specific list of values.

    Args:
        values (list): list of all the authorized values.

    Returns:
        callable: the validate method.
    """
    def validate(value):
        """Validator.

        Args:
            value (mixed): the value to validate.

        Returns:
            mixed: the validated value.
        """
        if value not in values:
            raise exceptions.FieldException(
                'The value selected is not part of the choices available.')
        return value

    return validate


def only_contains(*values):
    """Validator that checks a list only contains specific values.

    The validator goes through all the items passed in and check they are part
    of the group.

    Args:
        values (list): the values to validate.

    Returns:
        mixed: the validated values.
    """
    def validate(items):
        """Validator.

        Args:
            value (mixed): the value to validate.

        Returns:
            mixed: the validated value.
        """
        for item in items:
            if item not in values:
                raise exceptions.FieldException(
                    'The value {} is not part of the choices '
                    'available.'.format(item))
        return items

    return validate