from pynput.keyboard import Key, Listener
import time
import ctypes
from serial.tools import list_ports  # pyserial

lastKeypressTime = 0
lastCheckTime = time.time()
suspicion = 0
loopInterval = 1

def on_press(key):
    global lastKeypressTime
    lastKeypressTime = time.time()

def on_release(key):
    global suspicion
    timeSinceLastKeypress = time.time() - lastKeypressTime

    if timeSinceLastKeypress == 0:
        timeSinceLastKeypress = 0.001

    suspicion += 0.005 / timeSinceLastKeypress

    duckhuntcheck()

def detectKeyboard():
    try:
        value = set([item for item in list_ports.comports()])
        return False
    except:
        return True

def duckhuntcheck():
    global suspicion, lastCheckTime
    currentTime = time.time()
    timeSinceLastCheck = currentTime - lastCheckTime

    suspicion -= timeSinceLastCheck * 100

    if detectKeyboard():
        suspicion += 1

    if suspicion < 0:
        suspicion = 0

    print(suspicion)

    if suspicion >= 32:
        ctypes.windll.user32.LockWorkStation()
        suspicion = 0

    lastCheckTime = currentTime

# Collect events until released
with Listener(
        on_press=on_press,
        on_release=on_release) as listener:
    listener.join()