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

#define LED_PIN 26

// WiFi do Wokwi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Broker MQTT
const char* mqtt_server = "broker.hivemq.com";

WiFiClient espClient;
PubSubClient client(espClient);

float temperatura = 29.0;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);

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

  // Configura MQTT
  client.setServer(mqtt_server, 1883);
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Conectando MQTT...");
    if (client.connect("ESP32-Ana")) {
      Serial.println(" conectado!");
    } else {
      Serial.println(" falhou, tentando novamente...");
      delay(2000);
    }
  }
}

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

  client.loop();

  // Publica temperatura
  client.publish("casa/sala/temperatura", String(temperatura).c_str());

  Serial.print("Temperatura enviada: ");
  Serial.println(temperatura);

  temperatura += 0.1;
  delay(2000);
}