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#!/usr/bin/python
# -*- coding: utf-8 -*-

# basé sur le script Adafruit et adapté pour Domoticz



# Copyright (c) 2014 Adafruit Industries
# Author: Tony DiCola

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import os
import sys
import Adafruit_DHT
from requests.auth import HTTPBasicAuth
import requests
import RPi.GPIO as GPIO
import time

############# Parametres ################################# 

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# les parametres de Domoticz
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

domoticz_ip='localhost'
domoticz_port='8080'
user=''
password=''
domoticz_idx=1635


#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# les parametres du DHT
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#sensor est 11,22,ou 2302
# pin est le numero d la pin que vous avez cablée

#sensor=Adafruit_DHT.DHT11
#sensor=Adafruit_DHT.DHT22
sensor=Adafruit_DHT.AM2302
pin=4

# Set up GPIO pins
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
pin_alim = 17
GPIO.setup(pin_alim,GPIO.OUT)
GPIO.output(pin_alim,0)
print("Turnin GPIO " + str(pin_alim) + " off for 1 second.")
time.sleep(1)

############# Fin des parametres ################################# 


#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# le fomat pour la temp hum est celui ci
#/json.htm?type=command&param=udevice&idx=IDX&nvalue=0&svalue=TEMP;HUM;HUM_STAT
             

def maj_widget(val_url):
    requete='http://'+domoticz_ip+':'+domoticz_port+val_url
    #print requete
    r=requests.get(requete,auth=HTTPBasicAuth(user,password))
    if  r.status_code != 200:
          print ("Erreur API Domoticz")

GPIO.output(pin_alim,1)

humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)

if humidity is not None and temperature is not None:
    
    print('Temp={0:0.1f}*  Humidity={1:0.1f}%'.format(temperature, humidity))
    # l URL Domoticz pour le widget virtuel 
    url='/json.htm?type=command&param=udevice&idx='+str(domoticz_idx)
    url+='&nvalue=0&svalue='
    url+=str('{0:0.1f};{1:0.1f};2').format(temperature, humidity)
    #print url
    maj_widget(url)

else:
    # Url pour ajouter un message dans le log
    url='/json.htm?type=command&param=addlogmessage&message='
    url+=os.path.basename(__file__) + ': Problème pour lire le DHT - Réinit nécessaire.'
    maj_widget(url)
    print('Probleme avec la lecture du DHT. Try again!')
    sys.exit(1)

GPIO.output(17,0)