#!/usr/bin/python3
import time, socket, atexit
import RPi.GPIO as GPIO

tuerSock = "/run/tuer.sock"

ringPin = 18

GPIO.setmode(GPIO.BOARD)
GPIO.setup(ringPin, GPIO.IN)
atexit.register(GPIO.cleanup);

lastEvent = 0


while True:
	GPIO.wait_for_edge(ringPin, GPIO.BOTH)
	# measure time since event
	now = time.time()
	timePassed = now-lastEvent
	print("Time between events %f" % timePassed)
	# remember, remember
	lastEvent = now
	# action to be taken?
	if timePassed >= 1.5 and timePassed <= 3:
		print("Opening door")
		# talk with tuerd
		s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
		s.connect(tuerSock)
		s.send(b'buzz')
		data = s.recv(4)
		s.close()
		print("...done")
		if data != b'1':
			print("Received unexpected answer %s" % str(data))