#include <LiquidCrystal.h>

#define LED 1
#define RED_PIN 2
#define GREEN_PIN 3
#define BLUE_PIN 4
#define BUZZER_PIN1 6
#define BUZZER_PIN2 5
#define LDR_PIN A0  // Pin analog untuk sensor LDR

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
bool isLedOn = false; // Menyimpan status LED
int ldrValue = 0;     // Menyimpan nilai sensor LDR

void setup() {
  lcd.begin(16, 2);
  lcd.print("HELLO!");

  pinMode(LED, OUTPUT);
  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);
  pinMode(BUZZER_PIN1, OUTPUT);
  pinMode(BUZZER_PIN2, OUTPUT);
  pinMode(LDR_PIN, INPUT);  // Mengatur pin LDR sebagai input analog
}

void playTone(int frequency, int duration) {
  tone(BUZZER_PIN1, frequency, duration);
  tone(BUZZER_PIN2, frequency, duration);
  delay(duration);
}

void loop() {
  // Membaca nilai dari sensor LDR
  ldrValue = analogRead(LDR_PIN);

  if (ldrValue < 400) {
    // Menyalakan LED hijau ketika cahaya rendah
    digitalWrite(LED, HIGH); // Menyalakan LED
    digitalWrite(RED_PIN, LOW);  // Merah OFF
    digitalWrite(GREEN_PIN, HIGH); // Hijau ON
    digitalWrite(BLUE_PIN, LOW);  // Biru OFF
    digitalWrite(BUZZER_PIN1, HIGH); // Menyalakan buzzer
    digitalWrite(BUZZER_PIN2, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Green ");
    lcd.setCursor(0, 1);
    lcd.print("LED ON ");
    isLedOn = true;
  } else if (ldrValue > 500) {
    // Menyalakan LED merah dan aktifkan buzzer ketika cahaya di atas 500 lux
    digitalWrite(LED, LOW); // Mematikan LED hijau
    digitalWrite(RED_PIN, HIGH);  // Merah ON
    digitalWrite(GREEN_PIN, LOW); // Hijau OFF
    digitalWrite(BLUE_PIN, LOW);  // Biru OFF
    digitalWrite(BUZZER_PIN1, HIGH); // Menyalakan buzzer
    digitalWrite(BUZZER_PIN2, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Red   ");
    lcd.setCursor(0, 1);
    lcd.print("LED ON ");
    isLedOn = true;
  } else {
    // Mematikan LED dan sensor RGB LED ketika cahaya cukup tinggi
    digitalWrite(LED, LOW); // Mematikan LED
    digitalWrite(RED_PIN, LOW);
    digitalWrite(GREEN_PIN, LOW);
    digitalWrite(BLUE_PIN, LOW);
    digitalWrite(BUZZER_PIN1, LOW); // Mematikan buzzer
    digitalWrite(BUZZER_PIN2, LOW);
    lcd.setCursor(0, 0);
    lcd.print("        "); // Menghapus pesan di baris pertama
    lcd.setCursor(0, 1);
    lcd.print("LED OFF");
    isLedOn = false;
  }

  delay(3000); // Tunggu selama 3 detik sebelum beralih kondisi
}