#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define buzzerPin 7
#define trigPin 6
#define echoPin 5
#define pirPin 8
#define buttonPin 9  // Tentukan pin tombol
#define greenPin 4
#define yellowPin 3
#define redPin 2

LiquidCrystal_I2C lcd(0x27, 16, 2);

bool buzzerState = true;  // Inisialisasi status awal buzzer (aktif)

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(pirPin, INPUT);
  pinMode(buttonPin, INPUT_PULLUP);  // Konfigurasi pin tombol sebagai INPUT dengan pull-up resistor
  pinMode(redPin, OUTPUT);
  pinMode(yellowPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  Serial.begin(9600);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Jarak:     cm");
  lcd.setCursor(0, 1);
  lcd.print("Status: ");
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  long waktu, jarak;
  waktu = pulseIn(echoPin, HIGH);
  jarak = (waktu * 0.0343) / 2;

  Serial.print(jarak);
  Serial.println("cm");

  lcd.setCursor(7, 0);
  lcd.print("    ");
  lcd.setCursor(7, 0);
  lcd.print(jarak);

  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, LOW);
  digitalWrite(greenPin, LOW);
  
  // Tambahan deteksi gerakan menggunakan Sensor PIR
  if (digitalRead(pirPin) == HIGH) {
    digitalWrite(greenPin, HIGH);
    lcd.setCursor(0, 1);
    lcd.print("Status: Gerakan");
    if (buzzerState) {
      tone(buzzerPin, 1000);
      delay(300);
      noTone(buzzerPin);
      delay(300);
    }
  } else {
    if (jarak >= 20 && jarak <= 30) {
      digitalWrite(greenPin, HIGH);
      lcd.setCursor(0, 1);
      lcd.print("Status: Aman    ");
      if (buzzerState) {
        tone(buzzerPin, 1000);
        delay(300);
        noTone(buzzerPin);
        delay(300);
      }
    } else if (jarak >= 10 && jarak <= 20) {
      digitalWrite(yellowPin, HIGH);
      lcd.setCursor(0, 1);
      lcd.print("Status: Hati2");
      if (buzzerState) {
        tone(buzzerPin, 2000);
        delay(200);
        noTone(buzzerPin);
        delay(200);
      }
    } else if (jarak >= 0 && jarak <= 10) {
      digitalWrite(redPin, HIGH);
      lcd.setCursor(0, 1);
      lcd.print("Awazz Gubrakk");
      if (buzzerState) {
        tone(buzzerPin, 3000);
      }
    }
  }

  // Membaca status tombol
  if (digitalRead(buttonPin) == LOW) {
    // Jika tombol ditekan, ubah status buzzer
    buzzerState = !buzzerState;
    delay(500);  // Debouncing untuk menghindari pembacaan ganda tombol
  }

  // Mematikan buzzer jika statusnya dinonaktifkan
  if (!buzzerState) {
    noTone(buzzerPin);
  }

  delay(100);
}