import network
import time
from machine import Pin
import dht
import ujson
from umqtt.simple import MQTTClient

# MQTT Client MQTT
MQTT_CLIENT_ID = "teste.utfpr.edu.br"
MQTT_BROKER = "broker.mqttdashboard.com"
MQTT_USER = ""
MQTT_PASSWORD = ""
MQTT_TOPIC = "Thiago-Emerson-Coletho-de-Souza"

sensor = dht.DHT22(Pin(15))

print("Conectando ao WiFi", end="")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect('Wokwi-GUEST', '')
while not sta_if.isconnected():
  print(".",end="")
  time.sleep(0.1)
print("Conectado!")

print("Conectando ao Servidor MQTT... ", end="")
client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD)
client.connect()

print("Conectado!")

anterior = ""
while True:
  print("Medindo condições do tempo", end="")
  sensor.measure()
  message = ujson.dumps({
    "temperatura": sensor.temperature(),
    "umidade": sensor.humidity(),
  })

  if message != anterior:
    print("Atualizado!")
    print("Reportando mensagem para o tópico MQTT {}: {}".format(MQTT_TOPIC, message))
    client.publish(MQTT_TOPIC, message)
    prev_weather = message
  else:
    print("Nada mudou")
  time.sleep(2)