import network, time
from utime import sleep, sleep_ms, ticks_us
from machine import Pin, ADC, I2C
from dht import DHT22
from ssd1306 import SSD1306_I2C
import ujson
from umqtt.simple import MQTTClient

# MQTT Server Parameters
MQTT_CLIENT_ID = "clientId-EJzX7rQAlD"
MQTT_BROKER    = "broker.hivemq.com"
#MQTT_BROKER    = "192.168.20.25"  #  en docker apuntar al host local
MQTT_USER      = ""
MQTT_PASSWORD  = ""
MQTT_TOPIC     = "ruscustech/tech"


ldr = ADC(Pin(4))
i2c = I2C(sda=Pin(21), scl=Pin(22))
pantalla = SSD1306_I2C(128, 64, i2c)

def map_value(value, in_min, in_max, out_min, out_max):
    return (value - in_min) * (out_max - out_min) / (in_max - in_min) + out_min

sensor = DHT22(Pin(16))
print(i2c.scan(), "Conectada")

def conectaWifi (red, password):
      global miRed
      miRed = network.WLAN(network.STA_IF)     
      if not miRed.isconnected():              #Si no está conectado…
          miRed.active(True)                   #activa la interface
          miRed.connect(red, password)         #Intenta conectar con la red
          print('Conectando a la red', red +"…")
          timeout = time.time ()
          while not miRed.isconnected():           #Mientras no se conecte..
              if (time.ticks_diff (time.time (), timeout) > 10):
                  return False
      return True


if conectaWifi ("Wokwi-GUEST", ""):


    print ("Conexión exitosa!")
    print('Datos de la red (IP/netmask/gw/DNS):', miRed.ifconfig())

    print("Conectando a  MQTT server... ",MQTT_BROKER,"...", end="")
    client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD)
    client.connect()
         
    while True:
        sensor.measure()
        tem = sensor.temperature()
        hum = sensor.humidity()
        # dato = ldr.read_u16()
        # sleep_ms(50)
        # dato_mapeado = map_value(dato, 0, 65535, 100, 0)
        print("Tem: {}, Hum {}".format(tem, hum))
        # textIn = "Int luz {:.0f} %".format(dato_mapeado)
        sleep_ms(2000)
        texto = "Tem: {:.0f} Hum: {:.0f}".format(tem, hum)
        pantalla.hline(0, 0, 128, 1)
        pantalla.hline(0, 20, 128, 1)
        pantalla.vline(0, 0, 20, 1)
        pantalla.vline(127, 0, 20, 1)
        pantalla.text('Datos', 40, 8, 1)
        pantalla.text(str(texto), 0, 30, 1)
        # pantalla.text(str(textIn), 0, 50, 1)
        pantalla.show()

        print("Revisando Condiciones ...... ")
        message = ujson.dumps({
        "Humedad": hum,
        "Temperatura": tem
        })
     
        print("Reportando a  MQTT topic {}: {}".format(MQTT_TOPIC, message))
        client.publish(MQTT_TOPIC, message)

else:
       print ("Imposible conectar")
       miRed.active (False)