from libbot import signal
from libsignal import Message, MessageMention


@signal.onMessage()
async def onMessage(message: Message):
    if message.user and message.group and message.text and "@everyone" in message.text:
        msg = Message("", quote=message)
        for user in message.group.members:
            msg += MessageMention.newMessage(user)
        await signal.sendMessage(msg, message.group)