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

sensor = dht.DHT22(Pin(20))

# Broker settings
MQTT_BROKER="labo.g2.org"
MQTT_PORT=1883
MQTT_TEMP_TOPIC="/indobot/temp"
MQTT_HUM_TOPIC="/indobot/hum"

def connect_to_wifi():
    sta_if = network.WLAN(network.STA_IF)
    sta_if.active(True)
    sta_if.connect("Wokwi-GUEST", "")
    while not sta_if.isconnected():
        sleep(0.3)
    print("Successfully connected to Wifi!")

while True:
    try:
        time.sleep(2)

        connect_to_wifi()

        mqtt_client = MQTTClient(
                            "",
                            MQTT_BROKER,
                            port=MQTT_PORT,
                            user="",
                            password="",
                            keepalive=0
                        )
        mqtt_client.connect()

        sensor.measure()
        temp = sensor.temperature()
        hum = sensor.humidity()
        temp_f = temp * (9/5) + 32.0

        client.publish(MQTT_TEMP_TOPIC, temp, qos=0)
        client.publish(MQTT_HUM_TOPIC, HUM, qos=0)
        print('Temperature: %3.1f C' %temp)
        print('Temperature: %3.1f F' %temp_f)
        print('Humidity: %3.1f %%' %hum)
    except OSError as e:
        print(e)
        print('Failed to read sensor.')