#!/usr/bin/python -u
# -*- coding: utf-8 -*-
#
import serial
import time
import os
import paho.mqtt.client as mqtt
import json
import math
#import numpy as np

def touch(fname, times=None):
    with open(fname, 'a'):
        os.utime(fname, times)
        

minUpdateInterval = 60
override_updateinterval_on_change = False

sensors = {}
sensors_idx = {}
with open("jeelink_sensors.csv", "r") as sensorscsv:
    for line in sensorscsv:
        if line.find('ID,DomoticzIdx,Name') == -1:
            # nur Zeilen die nicht der header sind sind interessant
            line = line.strip('\r')
            line = line.strip('\n')
            
            parts = line.split(',')
            sensorId = parts[0]
            domoticzIdx = parts[1]
            sensorName = parts[2]
            
            sensors[str(sensorId)] = str(sensorName)
            sensors_idx[str(sensorId)] = str(domoticzIdx)

        
#sensors = {'4':'Arbeitszimmer','16':'AussenGarten','60':'AussenParkplatz','50':'Bad','39':'Balkon','55':'Kueche','40':'Schlafzimmer'}
#sensors_idx = {'4':'1','16':'94','60':'113','50':'4','39':'88','55':'6','40':'3'}

print sensors
print sensors_idx

sensors_lastTemp = {}
sensors_lastHum = {}
sensors_lastUpdate = {}

try:
    #while True:
    with open("jeelinkserlines.txt", "r") as ins:
        for serLine in ins:
        #serLine = "OK 9 60 1 4 118 75"

            ##if not null then...
            if(serLine):
                #print (repr(serLine))    #Echo the serial buffer bytes up to the CRLF back to screen
                serLine = serLine.strip('\r')
                serLine = serLine.strip('\n')
                
                print " "
                print serLine
                
                if serLine.find('OK 9') != -1:
                    # uns interessieren nur reinkommende Zeilen die mit "OK 9 " beginnen
                    
                    # 0  1 2  3   4   5   6
                    # OK 9 ID XXX XXX XXX XXX
                    # |  | |  |   |   |   |
                    # |  | |  |   |   |   --- Humidity incl. WeakBatteryFlag
                    # |  | |  |   |   |------ Temp * 10 + 1000 LSB
                    # |  | |  |   |---------- Temp * 10 + 1000 MSB
                    # |  | |  |-------------- Sensor type (1 or 2) +128 if NewBatteryFlag
                    # |  | |----------------- Sensor ID
                    # |  |------------------- fix "9"
                    # |---------------------- fix "OK"
                    
                    bytes = serLine.split(' ')
                    
                    #addr = bytes[2]
                    #addr = "{0:x}".format(int(bytes[2]))
                    #addr = hex((int(bytes[2])))
                    addr = int(bytes[2])
                    addrhex = "{0:x}".format(int(bytes[2]))
                    
                    if int(bytes[3]) >= 128: 
                        batt_new = 1
                        type = int(bytes[3]) - 128
                    else:
                        batt_new = 0
                        type = int(bytes[3])
                    
                    temp = (int(bytes[4])*256 + int(bytes[5]) - 1000)/10.0
                    
                    if int(bytes[6]) >= 128: 
                        batt_low = 1
                        hum = int(bytes[6]) - 128
                    else:
                        batt_low = 0
                        hum = int(bytes[6])
                        if hum > 100: 
                            hum = 100
                    
                    
                    currentsensor = sensors.get(str(addr), None)
                    #if currentsensor == 0: 
                    if currentsensor is None: 
                        #fname = 'logs/jeelink_unknown_sensor_' + str(addr)
                        #touch(fname)
                        print "unknown sensor ID " + str(addr)
                    
                    lastUpdate = sensors_lastUpdate.get(str(addr), None)
                    lastTemp = sensors_lastTemp.get(str(addr), None)
                    lastHum = sensors_lastHum.get(str(addr), None)
                    idx = sensors_idx.get(str(addr),None)
                    
                    senddata = False
                    if idx is not None:
                        if override_updateinterval_on_change:
                            if lastTemp != str(temp) or lastHum != str(hum):
                                senddata = True
                                #print "hier! " + str(temp) + " != " + str(lastTemp) + "    " + str(hum) + " != " + str(lastHum)
                        if lastUpdate is not None:
                            timediff = int(time.time()) - lastUpdate
                            if timediff >= minUpdateInterval:
                                senddata = True
                                #print "do!"
                        else:
                            senddata = True
                    
                    if senddata:                           
                        sensors_lastUpdate[str(addr)] = int(time.time())
                        sensors_lastTemp[str(addr)] = str(temp)
                        sensors_lastHum[str(addr)] = str(hum)
                        
                        domoticz_json = "{\"idx\":" + str(idx) + ",\"nvalue\":0,\"svalue\":\"" + str(temp) + ";" + str(hum) + ";1\"}"
                        
                        print domoticz_json
                                        
                    print "addr: " + str(addr) + " = 0x" + str(addrhex) + "   batt_new: " + str(batt_new) + "   type: " + str(type) + "   batt_low: " + str(batt_low) + "   temp: " + str(temp) + "   hum: " + str(hum) + "   Name: " + str(currentsensor)
                    time.sleep(1)
                    

except KeyboardInterrupt, e:
    print('\n')