#!/usr/bin/env python

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

# PIR pin
REL_GPIO = 21
PIR_GPIO = 16
# Display timeout in seconds
TIMEOUT = 350

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

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


def set_display(enable,an=0):
    global display
    display = enable
    relais=an
    os.system("sudo gpio -g write 21 " + "an")
    os.system("sudo vcgencmd display_power " + str(int(enable)))



def check_timeout():
    print("timed")
    if timer >= TIMEOUT and display:
        set_display(False)
        os.system("sudo gpio -g write 21 1")
    elif not display and timer < TIMEOUT:
        set_display(True)
        os.system("sudo gpio -g write 21 0")


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)