"""Filter Utils."""
import marshmallow

from conflict_manager import exceptions
from conflict_manager.schemas.filter_schema import FilterSchema


def get_filter_options(filter_fields=[], query=None, fields=[]):
    """Get filter options."""
    schema = FilterSchema(filter_fields=filter_fields)
    query_dict = {
        'query': query,
        'fields': fields
    }
    try:
        return schema.load(query_dict)
    except marshmallow.ValidationError as err:
        raise exceptions.ValidationError(message=err.messages)