fix: lazy load

src/usecase/target_channel/disconnect_target_chan_by_tg_id.py

@@ -10,13 +10,12 @@ log = logging.getLogger(__name__)
 
 
 async def disconnect_target_chan_by_tg_id(self: 'Usecase', input: dto.DisconnectTargetChanByTgIdInput) -> None:
-    # 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 disconnecting channel')
-        return
-
     async with self.database.transaction():
+        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 disconnecting channel')
+            return
+
         channel = await self.database.get_target_channel(user.id, telegram_id=input.telegram_id)
         if not channel:
             log.warning(f'Target channel {input.telegram_id} not found')