from dataclasses import dataclass

from core.global_symbols import NotFound, ErrorObj
from core.utils import sheerka_deepcopy


@dataclass
class ServiceObj:
    event_id: str  # digest of the event where the object is created / modified


class BaseService:
    """
    Base class for services
    """

    def __init__(self, sheerka, order=999):
        self.sheerka = sheerka
        self.order = order  # initialisation order. The lowest is initialized first

    def initialize(self):
        """
        Adds cache or bind methods
        :return:
        """
        pass

    def store_values(self, context, *args):
        """
        Use variable Manager to store the state of the service
        """
        for prop_name in args:
            self.sheerka.record_var(context, self.NAME, prop_name, sheerka_deepcopy(getattr(self, prop_name)))

    def restore_values(self, *args):
        """
        Use Variable Manager to restore the state of a service
        :param args:
        :return:
        """
        for prop_name in args:
            if (value := self.sheerka.load_var(self.NAME, prop_name)) is not NotFound:
                setattr(self, prop_name, value)

    def store_var(self, context, var_name):
        """
        Store/record the value of an attribute
        """
        self.sheerka.record_var(context, self.NAME, var_name, getattr(self, var_name))


@dataclass()
class FailedToCompileError(Exception, ErrorObj):
    cause: list