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

const char* ssid = "Wokwi-GUEST";
const char* password = "";

const char* mqttServer = "mqtt.tago.io";
const int mqttPort = 1883; 
const char* mqttUser = "usuario";
const char* mqttPassword = "7f28cec1-6476-4a40-b379-c22917289a59";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);

  // Conectar-se à rede Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Conectando ao WiFi...");
  }
  Serial.println("Conectado ao WiFi");


 client.setServer(mqttServer, mqttPort);
client.setCallback(callback);

while (!client.connected()) {
    String client_id = "esp32-client-";
    client_id += String(WiFi.macAddress());
    Serial.printf("The client %s connects to the public MQTT broker\n", client_id.c_str());
    if (client.connect(client_id.c_str(), mqttUser, mqttPassword)) {
        Serial.println("Public EMQX MQTT broker connected");
    } else {
        Serial.print("failed with state ");
        Serial.print(client.state());
        delay(2000);
    }
}

client.subscribe("motor");
//client.publish("topico", "[{\"variable\": \"motor\", \"value\": 35}]");


}

void loop() {
  // Seu código aqui
  client.loop();
}

void reconnect() {
  while (!client.connected()) {
    Serial.println("Connecting to MQTT...");
    if (client.connect("ESP32Client")) {
      Serial.println("Connected to MQTT");
      client.subscribe("motor");
    } else {
      Serial.print("Failed, rc=");
      Serial.print(client.state());
      Serial.println(" Retrying in 5 seconds...");
      delay(5000);
    }
  }
}

void callback(char *topic, byte *payload, unsigned int length) {
    Serial.print("Message arrived in topic: ");
    Serial.println(topic);
    Serial.print("Message:");
    for (int i = 0; i < length; i++) {
        Serial.print((char) payload[i]);
    }
    Serial.println();
    Serial.println("-----------------------");
}