#! /usr/bin/python3
# vim: ts=2 sw=2 et

import os
import stat
import time
import signal
import sys
import RPi.GPIO as gpio
import grp
from configparser import ConfigParser

#Read config
parser = ConfigParser()
parser.read('/etc/foodoord.conf')

doorapi = parser.get('doorstatus', 'status_url')
consumerkey = parser.get('doorstatus', 'key')
consumersecret = parser.get('doorstatus', 'secret')

#Definitions for output
LED_RED=6
LED_GREEN=7
RELAYS_LOCK=0
RELAYS_UNLOCK=1
PIN_OPEN=24
PIN_CLOSE=27
#Definitions for input
DOOR_BELL=0
REED_RELAYS=1 #not implementet yet

#Definitions for LEDcolor
RED=1
GREEN=2
ORANGE=3



def write_state(state):
  try:
    handle = open("/tmp/door_state", "w")
    handle.write(state)
    handle.close()
  except:
    pass


def update_api(locked):
  try:
    os.system("/usr/bin/curl -XPOST --header 'Content-Type: application/json' --data '{ \"consumer_key\": \"" + consumerkey  + "\", \"consumer_secret\": \"" + consumersecret + "\", \"cellar\": " + str(locked).lower() + " }' '" + doorapi  + "' ")
  except:
    pass

if __name__ == "__main__":
    
  #Startsettings
  STATUS=False
  gpio.setmode(gpio.BCM)
  gpio.setup(PIN_OPEN, gpio.OUT)
  gpio.setup(PIN_CLOSE, gpio.OUT)
  #Setting up FiFo to get sshd-output
  try:
    os.mkfifo("/var/run/foodoord.pipe")
    os.chown("/var/run/foodoord.pipe", -1, grp.getgrnam('foodoor')[2])
    os.chmod("/var/run/foodoord.pipe", stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP)
  except OSError:
    pass

  with open("/var/run/foodoord.pipe", "r") as ssh_input:
    while 1:
      #Read sshd-output from pipe
      Pipe = ssh_input.readline()[:-1]

      if (Pipe == "close"):
        gpio.output(PIN_CLOSE,1)
        time.sleep(1)
        gpio.output(PIN_CLOSE,0)

        write_state("closed")
        update_api(True)


      elif (Pipe == "open"):

        #Locking
        gpio.output(PIN_OPEN,1)
        time.sleep(1)
        gpio.output(PIN_OPEN,0)

        #Save State
        write_state("open")

        #Status Update
        update_api(False)
                
      time.sleep(0.2)