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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.hivemq.com";

WiFiClient espClient;
PubSubClient client(espClient);

#define ONE_WIRE_BUS 4
#define LED 2

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup() {
  pinMode(LED, OUTPUT);
  Serial.begin(115200);
  sensors.begin();
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  }
  client.setServer(mqtt_server, 1883);
}

void reconnect() {
  while (!client.connected()) {
    client.connect("ESP32TermoPets");
  }
}

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

  sensors.requestTemperatures();
  float temp = sensors.getTempCByIndex(0);

  if (temp > 30) {
    digitalWrite(LED, HIGH);
  } else {
    digitalWrite(LED, LOW);
  }

  char msg[10];
  dtostrf(temp, 1, 2, msg);
  client.publish("termopets/temperatura", msg);

  Serial.print("Temp: ");
  Serial.println(temp);

  delay(2000);
}