#include <DHT.h>

#define DHT_PIN 21
#define LED_PIN 22
#define BUZZER_PIN 23
#define BUTTON_PIN 4
#define DHT_TYPE DHT22
#define BUZZER_FREQUENCY 100

DHT dht(DHT_PIN, DHT_TYPE);
bool buzzerActive = true;

void setup() {
  Serial.begin(9600);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  dht.begin();
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Gagal Membaca Sensor DHT!");
    return;
  }

  Serial.printf("Suhu: %.2f °C\nKelembapan: %.2f %%\n", temperature, humidity);

  bool conditionMet = temperature > 20 || humidity > 80;
  digitalWrite(LED_PIN, conditionMet ? HIGH : LOW);
  if (conditionMet) {
    buzzerActive ? tone(BUZZER_PIN, BUZZER_FREQUENCY) : noTone(BUZZER_PIN);
    Serial.println(buzzerActive ? "Lampu Nyala\nBuzzer Nyala" : "");
  } else {
    noTone(BUZZER_PIN);
  }

  if (digitalRead(BUTTON_PIN) == LOW) {
    buzzerActive = !buzzerActive;
    Serial.println(buzzerActive ? "Buzzer Aktif" : "Buzzer Mati");
    delay(200);
  }

  delay(1000);
}