from typing import Any, Union

from aiohttp import ClientSession
from bson import ObjectId
from libbot.pycord.classes import PycordBot as LibPycordBot

from classes.enums import MemberStatus
from classes.errors import GuildNotFoundError, MemberNotFoundError
from classes.pycord_guild import PycordGuild
from classes.pycord_member import PycordMember


class PycordBot(LibPycordBot):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.client_session = ClientSession()

        if self.scheduler is None:
            return

    async def find_guild(
        self,
        id: Union[int, ObjectId],
        create: bool = False,
    ) -> PycordGuild:
        """Find guild by their ID.

        ### Args:
            * id (`Union[int, ObjectId]`): Guild's ID
            * create (`bool`): Create DB entry if does not exist. Defaults to `False`.

        ### Raises:
            * `GuildNotFoundError`: Raised when guild entry could not be found.

        ### Returns:
            * `PycordGuild`: Guild in database representation.
        """
        try:
            guild = await PycordGuild.find(id)
        except GuildNotFoundError as exc:
            if create and isinstance(id, int):
                return await PycordGuild.create(id)
            else:
                raise exc from exc

        return guild

    async def find_member(
        self,
        id: Union[int, ObjectId],
        guild: ObjectId,
        create: bool = False,
    ) -> PycordMember:
        """Find member by their ID and guild.

        ### Args:
            * id (`Union[int, ObjectId]`): Member's ID
            * guild (`ObjectId`): Discord guild's database ID
            * create (`bool`): Create DB entry if does not exist. Defaults to `False`.

        ### Raises:
            * `MemberNotFoundError`: Raised when member entry could not be found.

        ### Returns:
            * `PycordMember`: Member in database representation.
        """
        try:
            member = await PycordMember.find(id, guild)
        except MemberNotFoundError as exc:
            if create and isinstance(id, int):
                return await PycordMember.create(id, guild, MemberStatus.UNVERIFIED)
            else:
                raise exc from exc

        return member

    async def close(self, *args: Any, **kwargs: Any) -> None:
        await self.client_session.close()

        if self.scheduler is not None:
            self.scheduler.shutdown()

        await super().close(*args, **kwargs)