class BotExtension:
    def __init__(self, bm):
        self.bm = bm
        self.name = "Signal check"
        self.trigger = ['signal', 's']
        
    def __call__(self, msg, text):
        return f"snr: {msg.packet.get('rx_snr', 'unk')} dB\nrssi: {msg.packet.get('rx_rssi', 'unk')} dB\nhops: {msg.packet.get('hop_start', 0) - msg.packet.get('hop_limit', 0)}"