import logging
from typing import TYPE_CHECKING

from src import domain, dto

if TYPE_CHECKING:
    from .. import Usecase

log = logging.getLogger(__name__)


async def update_target_chan_permissions(self: 'Usecase', input: dto.UpdateTargetChanPermissionsInput) -> None:
    missing_permissions = []
    if not input.permissions.can_invite_users:
        missing_permissions.append('Создание инвайт-ссылок')
    if not input.permissions.can_restrict_members:
        missing_permissions.append('Управление пользователями')

    # Получаем user_id по telegram_id
    user = await self.database.get_user(telegram_id=input.user_telegram_id)
    if not user:
        log.warning(f'User with telegram_id {input.user_telegram_id} not found when updating channel permissions')
        return

    channel = await self.database.get_target_channel_for_user_by_telegram(user.id, input.telegram_id)
    if not channel:
        log.warning(f'Target channel {input.telegram_id} not found when permissions changed')
        raise domain.TargetChannelNotFound()

    if not missing_permissions:
        if channel.status != domain.TargetChannelStatus.ACTIVE:
            channel.status = domain.TargetChannelStatus.ACTIVE
            await self.database.update_target_channel(channel)

            await self.telegram_bot.send_message(
                f'✅ Канал "{input.chat_title}" был активирован.\n\nВсе необходимые права боту предоставлены!',
                input.user_telegram_id,
            )
            log.info(f'Target channel {input.telegram_id} reactivated - all permissions granted')
        return

    if channel.status == domain.TargetChannelStatus.ACTIVE:
        channel.status = domain.TargetChannelStatus.INACTIVE
        await self.database.update_target_channel(channel)

        missed_permissions = '\n'.join(f'• {p}' for p in missing_permissions)
        await self.telegram_bot.send_message(
            f'⚠️ Канал "{input.chat_title}" был деактивирован.\
            \n\nБоту убрали необходимые права:\n{missed_permissions}',
            input.user_telegram_id,
        )
        log.warning(f'Target channel {input.telegram_id} deactivated due to missing permissions: {missing_permissions}')