import re
import logging
from subprocess import check_output, CalledProcessError

log = logging.getLogger(__name__)

def main():
    dev_re = re.compile(r"Bus\s+(\d+)\s+Device\s+(\d+):\s+ID\s(\w+:\w+)\s(.+)$")
    try:
        lsusb = check_output("lsusb", encoding='UTF-8')
    except (CalledProcessError, OSError) as exc:
        log.debug(exc)
        return {}
    devices = []
    corsair_aio = None
    for line in lsusb.splitlines():
        info = dev_re.match(line)
        if not info:
            continue
        bus, device, dev_id, tag = info.groups()
        dev_info = {
            "device": f"/dev/bus/usb/{bus}/{device}",
            "id": dev_id,
            "tag": tag,
        }
        if tag.startswith('Corsair H'):
            corsair_aio = tag.split(maxsplit=3)[1]
        devices.append(dev_info)
    return {
        'corsair_aio': corsair_aio,
        'lsusb': devices,
    }