__all__ = [
    'MeetingException',
]


import datetime
import functools

from typing import Optional

from .. import constants
from ..enums import SaveType
from .meeting_related import MeetingRelated


class MeetingException(MeetingRelated):
    """
    Class for handling Meeting Exceptions.
    """

    def save(self, **_) -> constants.SAVE_TYPE:
        """
        Meeting Exceptions are hidden attachments with no save behaviors.

        If you want something to happen for saving, you can call the save of a
        parent class or write your own code.
        """
        return (SaveType.NONE, None)

    @functools.cached_property
    def exceptionReplaceTime(self) -> Optional[datetime.datetime]:
        """
        The date and time within the recurrence pattern that the exception will
        replace.

        The value is specified in UTC.
        """
        return self.getNamedProp('8228', constants.ps.PSETID_APPOINTMENT)

    @functools.cached_property
    def fExceptionalBody(self) -> bool:
        """
        Indicates that the Exception Embedded Message object has a body that
        differs from the Recurring Calendar object.

        If ``True``, the Exception MUST have a body.
        """
        return bool(self.getNamedProp('8206', constants.ps.PSETID_APPOINTMENT))

    @functools.cached_property
    def fInvited(self) -> bool:
        """
        Indicates if invitations have been sent for this exception.
        """
        return bool(self.getNamedProp('8229', constants.ps.PSETID_APPOINTMENT))