#!/usr/bin/env python

import RPi.GPIO as GPIO
import os
import time
import sys

# PIR pin
PIR_GPIO = 16
# Display timeout in seconds
TIMEOUT = 60

# DONT EDIT BELOW THIS LINE
# UNLESS YOU KNOW WHAT YOU ARE DOING

GPIO.setmode(GPIO.BOARD)
GPIO.setup(PIR_GPIO, GPIO.IN)
timer = 0
display = False


def set_display(enable):
    global display
    display = enable
    os.system("vcgencmd display_power " + str(int(enable)))


def check_timeout():
    if timer >= TIMEOUT and display:
        set_display(False)
    elif not display and timer < TIMEOUT:
        set_display(True)


def motion(pin):
    global timer
    timer = 0


if __name__ == "__main__":
    try:
        GPIO.add_event_detect(PIR_GPIO, GPIO.RISING, callback=motion)
        while True:
            time.sleep(1)
            if timer < TIMEOUT:
                timer += 1
            check_timeout()
    except KeyboardInterrupt:
        GPIO.cleanup()
        sys.exit(0)