"""
MicroPython IoT Weather Station Example for Wokwi.com

To view the data:

1. Go to http://www.hivemq.com/demos/websocket-client/
2. Click "Connect"
3. Under Subscriptions, click "Add New Topic Subscription"
4. In the Topic field, type "wokwi-weather" then click "Subscribe"

Now click on the DHT22 sensor in the simulation,
change the temperature/humidity, and you should see
the message appear on the MQTT Broker, in the "Messages" pane.

Copyright (C) 2022, Uri Shaked

https://wokwi.com/arduino/projects/322577683855704658
"""

import network
import time
from machine import Pin
import dht
import ujson
from umqtt.simple import MQTTClient
from my_esp import connect_wifi
import random as r

# led
led = Pin(14, Pin.OUT)
# Ket noi den wifi
connect_wifi()

# MQTT Server Parameters
MQTT_CLIENT_ID = f"d02k14{r.random()}"
MQTT_BROKER    = "broker.hivemq.com"
MQTT_USER      = ""
MQTT_PASSWORD  = ""
MQTT_SUB_TOPIC     = b"D02K14/commands"


def sub_cb(topic, msg):
  if (msg == b'on'):
    led.on()
  elif (msg == b'off'):
    led.off()


print("Connecting to MQTT server... ", end="")
client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD)
client.set_callback(sub_cb)
client.connect()
client.subscribe(MQTT_SUB_TOPIC)
print("Connected!")


while True:
  client.check_msg()