import asyncio
import signal
import datetime
import sys

from gmqtt import Client as MQTTClient

SHELLY_ID = ""
POWER_THRESHOLD = 0
TIME_THRESHOLD = 15 * 60

LAST_TIME = None

STOP = asyncio.Event()

def on_message(client, topic, payload, qos, properties):
    global LAST_TIME
    
    print(topic)
    print(payload)
    
    if topic.endswith("/relay/0") and payload.decode("UTF-8") == "on":
        if LAST_TIME == None:
            LAST_TIME = datetime.datetime.now()
            print("UPDATE TIME")
    if topic.endswith("/relay/0") and payload.decode("UTF-8") == "off":
        LAST_TIME = None
        print("RESET TIME")

    if topic.endswith("/relay/0/power") and LAST_TIME != None:
        if float(payload.decode("UTF-8")) > POWER_THRESHOLD:
            LAST_TIME = None
            print("RESET POWER")
        elif (datetime.datetime.now() - LAST_TIME).total_seconds() > TIME_THRESHOLD:
            #client.publish(f"shellies/{SHELLY_ID}/relay/0", "off")
            print('{ "state": { "1.3.6.1.4.1.48398.612.2.4": { "state": "Free" } } }')
            LAST_TIME = None
            print("RESET STATE")
        else:
            print("WAITING TIME")
    
def ask_exit(*args):
    STOP.set()

async def main(host):
    client = MQTTClient("shelly_client")

    client.on_message = on_message
       
    await client.connect(host)
    client.subscribe(f"shellies/{SHELLY_ID}/relay/0")
    client.subscribe(f"shellies/{SHELLY_ID}/relay/0/energy")
    
    await STOP.wait()
    await client.disconnect()

if __name__ == '__main__':
    loop = asyncio.get_event_loop()

    host = sys.argv[1]
    SHELLY_ID = sys.argv[2]
    POWER_THRESHOLD = int(sys.argv[3])

    loop.add_signal_handler(signal.SIGINT, ask_exit)
    loop.add_signal_handler(signal.SIGTERM, ask_exit)

    loop.run_until_complete(main(host))