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

// --- Configurações de Conexão ---
const char* ssid = "Wokwi-GUEST"; // Padrão do simulador
const char* password = "";
const char* tb_server = "mqtt.thingsboard.cloud"; // Ou o IP do seu servidor
const char* access_token = "2kjWtrjWMKkZ0YuhUCsY"; 

// --- Pinos e Sensores ---
const int SENSOR_PIN = 4; 
OneWire oneWire(SENSOR_PIN);
DallasTemperature sensors(&oneWire);
WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  sensors.begin();
  setup_wifi();
  client.setServer(tb_server, 1883);
}

void setup_wifi() {
  delay(10);
  Serial.println("Conectando WiFi...");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi conectado!");
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Tentando conectar ao ThingsBoard...");
    if (client.connect("ESP32S3_Client", access_token, NULL)) {
      Serial.println("Conectado!");
    } else {
      Serial.print("Falha, rc=");
      Serial.print(client.state());
      delay(5000);
    }
  }
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  // Leitura da Temperatura
  sensors.requestTemperatures();
  float t = sensors.getTempCByIndex(0);
  
    if (t != DEVICE_DISCONNECTED_C) {
    // Formata o JSON para o ThingsBoard
    String payload = "{";
    payload += "\"temperature\":";
    payload += String(t);
    payload += "}";

    char attributes[100];
    payload.toCharArray(attributes, 100);
    
    // Envia para o tópico padrão de telemetria
    client.publish("v1/devices/me/telemetry", attributes);
    
    Serial.print("Enviado: ");
    Serial.println(attributes);
  }

  delay(10000); // Envia a cada 10 segundos
}