"""
MicroPython MQTT NeoPixels Example for Wokwi.com

To control the pixels:

1. Go to https://replit.com/@mopfeil/MQTTPublisher#main.py
2. Start the Repl
3. The broker sits at: https://mqtt.one/broker.html

Derived from: Copyright (C) 2022, Uri Shaked
https://wokwi.com/arduino/projects/315787266233467457
"""

import network
from neopixel import NeoPixel
from machine import Pin
from time import sleep
from umqtt.simple import MQTTClient

pixels = NeoPixel(Pin(13), 16)
pixels.fill((0, 0, 0))
pixels.write()

def mqtt_message(topic, msg):
  print("Incoming message:", msg)
  try:
    msg_deco = list(msg)
    pixels.fill((msg_deco[0], msg_deco[1], msg_deco[2]))
    pixels.write()
  except Exception as e:
    print("Error:", e)

print("Connecting to WiFi...", end="")
import network
wifi = network.WLAN(network.STA_IF)
wifi.active(True)
wifi.connect("Wokwi-GUEST", "")
while not wifi.isconnected():
  sleep(0.5)
  print(".", end="")
print("Done")

print("Connecting to MQTT...")
client = MQTTClient("wokwi1", server = b'b37.mqtt.one', port = b'1883', user = b'36eost4479', password = b'3780impruy')
client.set_callback(mqtt_message)
client.connect()
client.subscribe(b'36eost4479/wokwi1')
print("Connected!")

while True:
  client.wait_msg()