#!/usr/bin/python3
from time import sleep
import struct
import asyncio
import socket
import time
import sys

from bleak import BleakClient
from bleak.backends.characteristic import BleakGATTCharacteristic

ADDRESS = "B4:99:4C:25:12:B2"
CHARACTERISTIC_UUID = "0000ffb7-0000-1000-8000-00805f9b34fb"

no_firing = -1
no_datapoint = -1
temperature = -1

def notification_handler(characteristic: BleakGATTCharacteristic, data: bytearray):
    """Simple notification handler which prints the data received."""
    print(f"{characteristic.description}: {data}")
    global no_firing, no_datapoint, temperature
    print(("response", data))
    (no_firing, no_datapoint, temperature) = struct.unpack("<hhh", data)
    print(("no_firing: ", no_firing))
    print(("no_datapoint: ", no_datapoint))
    print(("temperature: ", temperature))

def disconnect_handler(client):
    print("disconnect_handler")
    sys.exit(1)

async def main(address, char_uuid):
    async with BleakClient(address, disconnect_handler) as client:
        print(f"Connected: {client.is_connected}")
        try:
            await client.start_notify(char_uuid, notification_handler)
            prev_no_datapoint = -2
            while client.is_connected and prev_no_datapoint < no_datapoint:
                prev_no_datapoint = no_datapoint
                await asyncio.sleep(60.0)
        finally:
            await client.disconnect()

asyncio.run(main(ADDRESS, CHARACTERISTIC_UUID))