from typing import TYPE_CHECKING

from src import dto

if TYPE_CHECKING:
    from .. import Usecase


async def get_user_target_chans(self: 'Usecase', input: dto.GetUserTargetChansInput) -> dto.GetUserTargetChansOutput:
    async with self.database.transaction():
        channels = await self.database.get_user_target_channels(input.user_id)

    return dto.GetUserTargetChansOutput(
        target_channels=[
            dto.ConnectTargetChanOutput(
                id=channel.id,
                telegram_id=channel.telegram_id,
                title=channel.title,
                username=channel.username,
                is_active=channel.is_active,
            )
            for channel in channels
        ]
    )