#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 pinoLed = 18;

boolean estadoLed = false;


void setup(){
  Serial.begin(9600);
  conectarWiFi();

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

  pinMode(pinoLed, OUTPUT);
  Serial.println(("Bem-vindo ao controle do LED"));
}

void loop(){
  if(MQTT.connected() == false){
    ConectarMQTT();
  }
  MQTT.loop();
  }
 
void ConectarMQTT(){
  Serial.println("Conectando ao MQTT");
  if(MQTT.connect("recebe12", "ricardodias", "TesteSenai1")){
    Serial.println("Conectado ao MQtt");
    MQTT.subscribe("aulaLed/12/estadoLed");
    MQTT.subscribe("aulaLed/12/status");
  }else {
    Serial.println("Erro ao conectar!");
  }
}

void conectarWiFi() {
  WiFi.begin(nome_wifi, senha);
  while(WiFi.status() != WL_CONNECTED){
    Serial.print(".");
    delay(500);
  }
  Serial.print("WiFi conecntado..!");
}

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, "aulaLed/12/estadoLed") == 0){
    int estado = valor.toInt();
    if(estado == 1){
      digitalWrite(pinoLed, estado);
    }else{
      digitalWrite(pinoLed, estado);
    }
  }else if(strcmp(topic, "aulaLed/12/status") == 0){
    Serial.println(valor);
  }
}