import asyncio
import json
from datetime import datetime
from bleak import BleakScanner

async def handle_discovery(device, advertisement_data):
    if device.address == "DB:17:6C:7D:81:F6":
        keys = list(advertisement_data.manufacturer_data.keys())
        humKey = keys[len(keys)-1]
        battery = humKey & 0xFF
        temperature = (humKey >> 8)/10.0
        if humKey < 32767: #If Key is bigger than a smallint, temperature is lower than one byte (256)
            temperature = temperature + 25.6

        data =  {}
        data['temp'] = temperature
        data['battery'] = battery / 256.0;
        data['humid'] = advertisement_data.manufacturer_data[humKey][1]
        data['timestamp'] = datetime.now().strftime("%d.%m.%Y %H:%M:%S")

        jsonString = json.dumps(data)
        with open("/home/flo/local-weedkeeper/systems/backend/weedkeeper/var/temperature.data", "a") as dataFile:
            dataFile.write(jsonString+",\n")
        #print(jsonString)
        await scanner.stop()

async def scan():
    global scanner
    scanner = BleakScanner(handle_discovery)
    await scanner.start()
    await asyncio.sleep(10)
    await scanner.stop()

async def main():
    await scan()

asyncio.run(main())