객체 지향 실습

목표

• 인터페이스와 구현부를 명확히 분리하고자 했다.
• 단일 책임 원칙을 준수하자
• 생성자를 활용하자

코드

class PenaltyAction:
    _RELEASE = "RELEASE"
    _CANCEL = "CANCEL"
    _PAY_TYPE_LIST = ["SUPER_SUB", "CASH", "COUPON"]  # order의 pay_type

    def __init__(self, order) -> None:
        self.order = order
        self.user = order.user
        self.match = order.match_apply.match if order.match_apply else None

    def apply(self) -> None:
        if self._is_valid():
            self._subtract_manner_point()

    def _is_valid(self) -> bool:
        return (
            self._is_user_identified()
            and self._is_order_validated()
            and self._is_order_related_to_match()
            and self._is_match_released()
            and self._is_first_time_violated()
            and self._has_violated_time_policy()
        )

    def _is_user_identified(self) -> bool:
        if not self.user:
            return False
        elif self.user.id == 38:
            return False
        elif self.user.is_superuser:
            return False
        else:
            return True

    def _is_order_validated(self) -> bool:
        return (
            self.order.pay_type in self._PAY_TYPE_LIST
            and self.order.order_status == self._CANCEL
        )

    def _is_order_related_to_match(self) -> bool:
        return self.match is not None

    def _is_match_released(self) -> bool:
        return self.match.status == self._RELEASE

    def _is_first_time_violated(self) -> bool:
        return not FairPlay.objects.filter(
            user=self.user,
            match=self.match,
            is_active=1,
            end_dt=self.match.get_last_date_of_quarter(),
        ).exists()

    def _has_violated_time_policy(self) -> bool:
        now = timezone.now()
        diff = (self.match.schedule - now).total_seconds()
        return -1 * 60 <= diff <= 88 * 60

    def _subtract_manner_point(self):
        FairPlay.objects.create(
            user=self.user,
            match=self.match,
            type_id=11,
            is_active=1,
            start_dt=self.match.get_first_date_of_quarter(),
            end_dt=self.match.get_last_date_of_quarter(),
        )