#include <Arduino.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows

#define buttonPin 2  // Pin yang terhubung ke push button
#define ledPinRed 12 // Pin yang terhubung ke bagian merah LED RGB
#define ledPinGreen 14 // Pin yang terhubung ke bagian hijau LED RGB
#define ledPinBlue 27 // Pin yang terhubung ke bagian biru LED RGB

int buttonState = 0;
int lastButtonState = 0;
int buttonPressCount = 0;

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  pinMode(buttonPin, INPUT);
  pinMode(ledPinRed, OUTPUT);
  pinMode(ledPinGreen, OUTPUT);
  pinMode(ledPinBlue, OUTPUT);
}

void loop() {
  buttonState = digitalRead(buttonPin);

  if (buttonState != lastButtonState) {
    if (buttonState == HIGH) {
      buttonPressCount++;
      if (buttonPressCount > 3) {
        buttonPressCount = 0;
        digitalWrite(ledPinRed, LOW);
        digitalWrite(ledPinGreen, LOW);
        digitalWrite(ledPinBlue, LOW);
        lcd.setCursor(0, 0);
        lcd.print("OFF  ");
      }

      switch (buttonPressCount) {
        case 1:
          // Mode merah
          digitalWrite(ledPinRed, HIGH);
          digitalWrite(ledPinGreen, LOW);
          digitalWrite(ledPinBlue, LOW);
          lcd.setCursor(0, 0);
          lcd.print("Red  ");
          break;
        case 2:
          // Mode hijau
          digitalWrite(ledPinRed, LOW);
          digitalWrite(ledPinGreen, HIGH);
          digitalWrite(ledPinBlue, LOW);
          lcd.setCursor(0, 0);
          lcd.print("Green");
          break;
        case 3:
          // Mode biru
          digitalWrite(ledPinRed, LOW);
          digitalWrite(ledPinGreen, LOW);
          digitalWrite(ledPinBlue, HIGH);
          lcd.setCursor(0, 0);
          lcd.print("Blue ");
          break;
      }
    }
  }

  lastButtonState = buttonState;
  delay(50); // Debouncing
}