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



sensor = dht.DHT22(Pin(15))
#------------------------------------------------
# Connecting to WiFi
print("Connecting to WiFi", end="")

ssid = 'Wokwi-GUEST'
password = ''

wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)
while not wlan.isconnected():
  print(".", end="")
  time.sleep(0.1)
print(" Connected!")

#------------------------------------------------
# Connecting to MQTT
print("Connecting to MQTT server... ", end="")

# MQTT Server Parameters
MQTT_CLIENT_ID = "micropython-weather-demo"
MQTT_BROKER    = "broker.mqttdashboard.com"
MQTT_USER      = ""
MQTT_PASSWORD  = ""
MQTT_TOPIC     = "wokwi-weather"

client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD)
client.connect()

print("Connected!")
#------------------------------------------------

while True:
  print("Measuring weather conditions... ", end="")
  sensor.measure() 
  message = ujson.dumps({
    "temp": sensor.temperature(),
    "humidity": sensor.humidity(),})
  print("Reporting to MQTT topic {}: {}".format(MQTT_TOPIC, message))
  client.publish(MQTT_TOPIC, message)
  time.sleep(1)