from aiogram import types, Dispatcher
from create_bot import bot, dp
from sqdb import user, session

@dp.message_handler(commands=['alarm'])
async def notify_chats(message: types.Message):
    for chats in session.query(user.chat_id).distinct():
        session.close()
        await bot.send_message(chats,'<b>Ведутся пажилые работы,\n Ожидайте...</b>')

def register_handlers_alarm(dp: Dispatcher):
    dp.register_message_handler(notify_chats)