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

# MQTT Server Parameters
MQTT_CLIENT_ID = "esp32-led-00"
MQTT_BROKER    = "broker.mqttdashboard.com"
MQTT_USER      = ""
MQTT_PASSWORD  = ""
MQTT_TOPIC     = "led/set"

print("Connecting to 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(" Connected! to WiFi")

print("Connecting to MQTT server... ", end="")
client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD, ssl=True)
client.connect()

print("Connected! to MQTT")

led = Pin(15, Pin.OUT)

def callback(topic, message):
    print(topic, message)
    if message.decode("utf-8") == "1":
        led.on()
    else:
        led.off()

client.set_callback(callback)
client.subscribe("led/set")

while True:
    client.check_msg()
    time.sleep(0.1)