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

const char* wifiNome = "Wokwi-GUEST";  
const char* wifiSenha = "";         
const char* mqtt_server = "mqtt.eclipseprojects.io"; 

WiFiClient espClient;           
PubSubClient client(espClient); 

int ledPin = 19; 

void callback(char* topic, byte* payload, unsigned int length) {
  String message; 
  
   for (int i = 0; i < length; i++) {
    message += (char)payload[i];
  }
  
  Serial.print("Mensagem recebida ");
  Serial.print(topic);
  Serial.println(message);

  
  if (message == "LIGADO") {
    digitalWrite(ledPin, HIGH); 
     } else if (message == "DESLIGADO") {
    digitalWrite(ledPin, LOW); 
    }
}
void reconectar() {
  while (!client.connected()) {
    Serial.print("\nTentando conexão");
      if (client.connect("ESP32Subscriber33333")) { 
      Serial.println("\nConectado ao eclipseprojects🌒");
      client.subscribe("🖖👽 "); 
    } else {
      Serial.print("\n⚠️ Falha ⚠️");
      delay(3000); 
    }
  }
}

void setup() {
  Serial.begin(115200);        
  pinMode(ledPin, OUTPUT);      
   WiFi.begin(wifiNome, wifiSenha);
  Serial.print("conectando a rede 🔄");
  Serial.println("\nRede conectada ✅");
  client.setServer(mqtt_server, 1883);  
  client.setCallback(callback);        
  reconectar();
}
void loop() {
  if (!client.connected()) { 
    reconectar();
  }
  client.loop(); 
}