"""
MicroPython code for ESP32

Usage:

1. Go to ...
2. 

"""

# DEFINIZIONI, DICHIARAZIONI E VARIABILI GLOBALI
from machine import Pin   
from time import sleep

import dht

import network

# DEFINIZIONI, DICHIARAZIONI E VARIABILI HARDWARE (HW)
led    = Pin(21,Pin.OUT) 
button = Pin( 2,Pin.IN)

sensor = dht.DHT22(Pin(12))
temp = -999
hum  = -999

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="")
  sleep(0.1)
print(" Connected!")

# ALGORITMO ITERATIVO
print("Measuring Weather conditions with DHTxx sensor... ")
while True:
    # Fa misurazione ambientali
    sensor.measure() 
    temp = sensor.temperature()
    hum  = sensor.humidity()
    print(f"Temperatura: {temp}, Umidità: {hum}")
    
    # Verifica la presenza di un comando
    print(f"PRINT : Pulsante = {button.value()}") 
    if button.value():
        print(f"PRINT : Pulsante = {button.value()}")
        for i in range(10):
            led.value(True)
            sleep(.5)
            led.value(False)
            sleep(.5)
    sleep(1)



'''
1. Go to http://www.hivemq.com/demos/websocket-client/
2. Click "Connect"
3. Under Subscriptions, click "Add New Topic Subscription"
4. In the Topic field, type "wokwi-weather" then click "Subscribe"

Now click on the DHT22 sensor in the simulation,
change the temperature/humidity, and you should see
the message appear on the MQTT Broker, in the "Messages" pane.
'''

'''
import ujson
from umqtt.simple import MQTTClient

# MQTT Server Parameters
MQTT_CLIENT_ID = "micropython-weather-demo"
MQTT_BROKER    = "broker.mqttdashboard.com"
MQTT_USER      = ""
MQTT_PASSWORD  = ""
MQTT_TOPIC     = "wokwi-weather"




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

print("Connected!")

prev_weather = ""
while True:
  print("Measuring weather conditions... ", end="")
  sensor.measure() 
  message = ujson.dumps({
    "temp": sensor.temperature(),
    "humidity": sensor.humidity(),
  })
  if message != prev_weather:
    print("Updated!")
    print("Reporting to MQTT topic {}: {}".format(MQTT_TOPIC, message))
    client.publish(MQTT_TOPIC, message)
    prev_weather = message
  else:
    print("No change")
  time.sleep(1)
'''