from __future__ import annotations

import discord
from discord import app_commands

import config


def is_bot_admin(member: discord.abc.User | None) -> bool:
    """True when the member has the configured admin role for their guild."""
    if not isinstance(member, discord.Member) or member.guild is None:
        return False
    role_id = config.BOT_ADMIN_ROLES.get(member.guild.id)
    if role_id is None:
        return False
    return any(r.id == role_id for r in member.roles)


def bot_admin_check():
    """Slash-command decorator that gates execution behind ``is_bot_admin``."""

    async def predicate(interaction: discord.Interaction) -> bool:
        if is_bot_admin(interaction.user):
            return True
        raise app_commands.MissingPermissions(["bot_admin_role"])

    return app_commands.check(predicate)