#!/usr/bin/env python

'''
Timeout /dev/input/jsX device when no input received
This script is designed to be used with a udev rule that triggers a systemd service:

/etc/udev/rules.d/10-jstimeout.rules
ACTION=="add",ATTRS{name}=="Sony PLAYSTATION(R)3 Controller", ATTR{properties}=="0", TAG+="systemd", ENV{SYSTEMD_WANTS}="jstimeout@%E{UNIQ}.service"

sudo udevadm control --reload-rules; sudo service udev restart; sudo systemctl restart systemd-udevd.service

/etc/systemd/system/jstimeout@.service
[Unit]
Description=js Device Timeout

[Service]
Type=simple
RemainAfterExit=no
ExecStart=/usr/local/bin/jstimeout.py %I

[Install]
WantedBy=multi-user.target

sudo systemctl enable jstimeout@
'''

import glob
import os
import struct
import sys
import select
import time
import logging
from datetime import datetime as dt

from tendo import singleton

logging.basicConfig()
# logging.getLogger().setLevel(logging.ERROR)
logging.getLogger().setLevel(logging.DEBUG)

try:
    max_idle_time = 10*60
    jsid = sys.argv[1]
    me = singleton.SingleInstance(flavor_id=jsid)
except IndexError:
    logging.error("Missing argument: Bluetooth address")
    sys.exit(-1)
except singleton.SingleInstanceException:
    sys.exit(-1)

# Fetch the newest device for monitoring
files = glob.glob("/dev/input/js*")
if not files:
    logging.error("No js device input files found")
    sys.exit(0)
files.sort(key=lambda x: os.path.getctime(x))
dev_path = files[-1]
logging.info("Monitoring " + dev_path)

file = open(dev_path, "rb")

Flag = True
prevtime = dt.now()

while True:
    currtime = dt.now()
    r, w, e = select.select([file], [], [], 0)
    if file in r:
        print("Activity on " + dev_path)
        Flag = True
        prevtime = currtime
        os.read(file.fileno(), 1024*1024)
    else:
        if not Flag:
            idle = (currtime-prevtime).total_seconds()
            print("Idle time: " + str(idle))
            if idle >= max_idle_time:
                time.sleep(1)
                os.system("echo disconnect "+jsid+"| bluetoothctl >/dev/null")
                break
        else:
            print("Idle on " + dev_path)
            Flag = False
    time.sleep(30)