#include <Adafruit_GFX.h>
#include <MD_MAX72xx.h>

const int buttonPin = 2; // Pin untuk tombol
int buttonState = 0;     // Status tombol
int lastButtonState = 0; // Status tombol sebelumnya

const int led1 = 3;
const int led2 = 4;
const int led3 = 5;
const int led4 = 6;

int currentStep = 0; // Step untuk kondisi tombol

// Konfigurasi Max72xxPanel
Max72xx matrix = Max72xx(7, 1, 1); // Pin CS pada 7, 1 row, 1 column

void setup() {
  // Konfigurasi pin tombol dan LED
  pinMode(buttonPin, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);

  // Inisialisasi matrix
  matrix.setIntensity(5); // Kecerahan (0-15)
  matrix.setRotation(0, 1); // Rotasi layar jika dibutuhkan
  matrix.fillScreen(LOW);   // Kosongkan layar awal
  matrix.write();

  // Matikan semua LED saat awal
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  digitalWrite(led4, LOW);
}

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

  // Deteksi tombol ditekan (rising edge)
  if (buttonState == HIGH && lastButtonState == LOW) {
    delay(50); // Debounce
    currentStep++;
    if (currentStep > 3) {
      currentStep = 1;
    }
  }
  lastButtonState = buttonState; // Simpan status tombol sebelumnya

  // Jalankan aksi sesuai step
  switch (currentStep) {
    case 1:
      displayText("Nama", 1); // Teks "Nama" dari kiri ke kanan
      digitalWrite(led2, HIGH);
      digitalWrite(led4, HIGH);
      digitalWrite(led1, LOW);
      digitalWrite(led3, LOW);
      break;

    case 2:
      displayText("NIM", -1); // Teks "NIM" dari kanan ke kiri
      digitalWrite(led1, HIGH);
      digitalWrite(led3, HIGH);
      digitalWrite(led2, LOW);
      digitalWrite(led4, LOW);
      break;

    case 3:
      matrix.fillScreen(LOW); // Kosongkan layar
      matrix.write();
      digitalWrite(led4, HIGH); // Hanya LED 4 yang menyala
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
      digitalWrite(led3, LOW);
      break;
  }
}

// Fungsi untuk menampilkan teks di dot matrix
void displayText(String text, int direction) {
  matrix.fillScreen(LOW);
  int textLength = text.length() * 6; // Lebar teks (6 piksel per karakter)
  int position = (direction == 1) ? matrix.width() : -textLength; // Start position

  while ((direction == 1 && position > -textLength) || (direction == -1 && position < matrix.width())) {
    matrix.fillScreen(LOW);
    matrix.setCursor(position, 0);
    matrix.print(text);
    matrix.write();
    position += direction; // Gerakan teks ke kiri atau kanan
    delay(100);
  }
}