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

#define DHTPIN 15
#define DHTTYPE DHT22

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

WiFiClient espClient;
PubSubClient client(espClient);
DHT dht(DHTPIN, DHTTYPE);

void setup_wifi() {
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(250);
    Serial.print(".");
  }
  Serial.println("\nWiFi connected");
}

void reconnect() {
  while (!client.connected()) {
    if (client.connect("ESP32Publisher")) {
      Serial.println("MQTT connected");
    } else {
      delay(2000);
    }
  }
}

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

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

  float suhu = dht.readTemperature();
  float hum = dht.readHumidity();

  if (!isnan(suhu) && !isnan(hum)) {
    String suhuStr = String(suhu);
    String humStr = String(hum);

    client.publish("esp32/temperature", suhuStr.c_str());
    Serial.println("Kirim suhu: " + suhuStr);

    client.publish("esp32/humidity", humStr.c_str());
    Serial.println("Kirim humidity: " + humStr);
  }

  delay(1000);
}