#!/usr/bin/env python3

# Send lora packet to node-red when being triggered by postgresql
# Nico Schottelius <nico.schottelius -at- ungleich.ch>
# 2016-11-02
# GPLv3+



import base64
import binascii
import logging
import sys

#              L A T I T U D E        L O N G I TU DE
# status temp  deg min sec +hem   deg min  min  min
# 9e       17  46  58  204  0       009 02 320  a5 9a   0e e7
# 1        2   3   4   5   6       ?  8   9  10  11 12   13 14


# on display: 46 58 122N   09 02 207E
#             46.58 204    09.02 320
# sodaq: lat=46.9699219 lon=9.0391764
# google:    46.969943,     9.038999

log = logging.getLogger("adeunis")
log.setLevel(logging.DEBUG)



def get_humidity(hexpkg):
    humidity_value = int(hexpkg[6:8], 16)
    humidity = (125*humidity_value/(2**8))-6

    return humidity

def get_temperature(hexpkg):
    temp_byte1 = int(hexpkg[2:4], 16)
    temp_byte2 = int(hexpkg[4:6], 16)

    temp_value = (temp_byte2 << 8) + temp_byte1
    #print(temp_value)

    temp = (175.72 * temp_value / (2**16)) - 46.85

    # print("{}+{} {}{} {} - {}".format(temp_byte1,
    #                                   temp_byte2,
    #                                   hexpkg[4:6],
    #                                   hexpkg[2:4],
    #                                   temp_value, temp))

    return temp

if __name__ == '__main__':
    payload_raw="gShne5YAM9av"
    payload_raw="AaxkRpYAmxfE"
    payload_bin=binascii.a2b_base64(payload_raw)
    payload_hex=binascii.b2a_hex(payload_bin)

    print(get_temperature(payload_hex))
    print(get_humidity(payload_hex))

#    print("{} {}".format(payload_raw, payload_hex))