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

# ===== CONFIGURAÇÕES =====
WIFI_SSID = 'Wokwi-GUEST'
WIFI_PASSWORD = ''
BLYNK_AUTH = "7I37KT1C2113tRGWpIHs7kGqwS4wWhZk"
BLYNK_TEMPLATE_ID = "TMPL2eoXEW9WN"
BLYNK_TEMPLATE_NAME = "Liga"


# LED no pino GPIO 2
led = Pin(2, Pin.OUT)

# Conexão Wi-Fi
def connect_wifi():
    print("Conectando ao Wi-Fi...")
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(WIFI_SSID, WIFI_PASSWORD)
    while not wlan.isconnected():
        print('.', end='')
        time.sleep(1)
    print('\nWi-Fi conectado:', wlan.ifconfig())
    return wlan

# Conexão ao Blynk (via MQTT)
def connect_blynk():
    print("Conectando ao Blynk MQTT...")
    client = MQTTClient(
        client_id=BLYNK_TEMPLATE_ID,
        server="blynk.cloud",
        port=1883,
        user=BLYNK_AUTH,
        password="",
        keepalive=60
    )
    client.connect()
    print("Conectado ao Blynk!")
    return client

# Callback quando receber dados do app
def sub_cb(topic, msg):
    print("Mensagem recebida:", topic, msg)
    if msg == b'1':   # Botão ligado
        led.on()
    else:
        led.off()

# ===== EXECUÇÃO =====
try:
    wlan = connect_wifi()
    client = connect_blynk()

    # Inscreve-se no pino virtual V0
    topic = b'dv/' + BLYNK_AUTH.encode() + b'/V0'
    client.set_callback(sub_cb)
    client.subscribe(topic)

    while True:
        client.check_msg()  # Espera mensagens do app
        time.sleep(0.1)

except Exception as e:
    print("Erro:", e)
    time.sleep(5)
    machine.reset()