from machine import Pin, ADC
from utime import sleep, sleep_ms
from dht import DHT22
from hcsr04 import HCSR04 
import ujson
from umqtt.simple import MQTTClient
import network, time, urequests
import random 


s_dht= DHT22(Pin(4))
dis = HCSR04(trigger_pin=12, echo_pin=14)


# MQTT Server Parameters
MQTT_CLIENT_ID = "Dj0yMAEoGRw9BTU6OR8ECRU"
MQTT_BROKER    = "mqtt3.thingspeak.com"
MQTT_PORT = 1883
MQTT_USER      = "Dj0yMAEoGRw9BTU6OR8ECRU"
MQTT_PASSWORD  = "MJeJaYYcALxWk6XYxk1V/wAR"
MQTT_TOPIC     = "channels/2911341/publish"

def conectaWifi (red, password):
      global miRed
      miRed = network.WLAN(network.STA_IF)     
      if not miRed.isconnected():              #Si no est 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 ("Conexin 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, port=MQTT_PORT, user=MQTT_USER, password=MQTT_PASSWORD, keepalive=60)
    client.connect()

    print("Conectado al Broker!")

    

    while True:
        #s_dht.measure()
        #tem = s_dht.temperature()
        #hum = s_dht.humidity()
        #dista = dis.distance_cm()
        
        tem = random.randrange(-40, 80)  
        hum = random.randrange(0, 100)   
        dista = random.randrange(0, 400)
        
        
        print("Tem:{}°c, Hum:{}% , Dis:{}cm".format(tem,hum,dista))
        sleep_ms(50)

        message = f"field1={tem}&field2={hum}&field3={dista}&status=MQTTPUBLISH"
        
        
     
        print("Reportando a  MQTT topic {}: {}".format(MQTT_TOPIC, message))
        client.publish(MQTT_TOPIC, message)
        

        
        time.sleep(6)


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