import abc

__all__ = "AbstractEngine"


class AbstractEngineClass(abc.ABC):
    def __init__(self, table_engine):
        self.model = table_engine.model
        self.query_class = table_engine.query_class
        self.input = table_engine.input
        self.filter = table_engine.input.f
        self.default_sort_by = table_engine.default_sort_by
        self.custom_entities = []
        self.joins = table_engine.joins
        self.options = table_engine.options
        self.search_cols = table_engine.search_cols
        self.soft_deleted = table_engine.soft_deleted

    @abc.abstractmethod
    def exe(self):
        pass

    @abc.abstractmethod
    def set_filters(self):
        pass

    @abc.abstractmethod
    def set_sort(self):
        pass

    @staticmethod
    @abc.abstractmethod
    def get_expression_filter(col=None, op: str = 'eq', val: str = '') -> dict:
        pass

    @staticmethod
    @abc.abstractmethod
    def get_operator(op: str):
        pass

    def count(self):
        pass

    @staticmethod
    @abc.abstractmethod
    def generate_scope_filter(filters: list, general=False):
        pass

    @abc.abstractmethod
    def set_joins(self):
        pass