from abc import ABC, abstractmethod
from typing import Optional, Dict, Union
from datetime import datetime

import discord
from redbot.core import Config, commands
from redbot.core.bot import Red


class MixinMeta(ABC):
    """
    Base class for well behaved type hint detection with composite class.

    Basically, to keep developers sane when not all attributes are defined in each mixin.
    """

    def __init__(self, *_args):
        self.config: Config
        self.bot: Red
        self._mutes_cache: Dict[int, Dict[int, Optional[datetime]]]

    @staticmethod
    @abstractmethod
    async def _voice_perm_check(
        ctx: commands.Context, user_voice_state: Optional[discord.VoiceState], **perms: bool
    ) -> bool:
        raise NotImplementedError()

    @abstractmethod
    async def _send_dm_notification(
        self,
        user: Union[discord.User, discord.Member],
        moderator: Optional[Union[discord.User, discord.Member]],
        guild: discord.Guild,
        mute_type: str,
        reason: Optional[str],
        duration=None,
    ):
        raise NotImplementedError()