#include <DHT.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <PubSubClient.h>

String nome_wifi = "Wokwi-GUEST";
String senha = "";

WiFiClientSecure espClient;
PubSubClient MQTT(espClient);

char* broker = "9d19cc700cc44018b16cc529b323fc9d.s1.eu.hivemq.cloud";
int ledverde = 23;
int ledvermelho = 22;

float temperatura = 0;
void setup() {

Serial.begin(9600);

conectarWifi();

espClient.setInsecure();

MQTT.setServer(broker, 8883);
MQTT.setCallback(MonitorBroker);

pinMode(ledverde, OUTPUT);
pinMode(ledvermelho, OUTPUT);
}

void loop() {
if(MQTT.connected() == false){
  ConectarMQTT();
}
MQTT.loop();

Serial.println(temperatura);
if(temperatura >= 30){
  digitalWrite(ledvermelho, HIGH);
  digitalWrite(ledverde, LOW);
}else{
    digitalWrite(ledvermelho, LOW);
  digitalWrite(ledverde, HIGH);
}
}
void MonitorBroker(char* topic, byte* payload, unsigned int length){
  String valor = "";
  for(int  i = 0; i < length; i++){
    valor += (char)payload[i];
  }
  if(strcmp(topic, "aula/10/temperatura") == 0){
    temperatura == valor.toFloat();
  }
}

void ConectarMQTT(){
  Serial.print("Conectando ao MQTT...");
  if(MQTT.connect("Aluno10", "ricardodias", "TesteSenai1")){
    Serial.println("Conectado");
    MQTT.subscribe("aula/10/temperatura");
  }else{
    Serial.println("erro ao conectar!");
  }
}

void conectarWifi(){
  //Inicia a conexao WIFI passando como parametro nome e senha da rede
    WiFi.begin(nome_wifi, senha);
    Serial.print("Conectando");
    Serial.println(nome_wifi);

    while(WiFi.status() != WL_CONNECTED ){
        Serial.print(".");
        delay(500);
    }

    Serial.print("Wifi conectado! Ip obtido");
    //Exibir o ip no monitor
    Serial.println(WiFi.localIP());
}