#include <RGBmatrixPanel.h>

#define CLK  15
#define OE   13
#define LAT  12
#define A   A0
#define B   A1
#define C   A2
#define D   A3

RGBmatrixPanel matrix(A, B, C, D, CLK, LAT, OE, false, 64);

const int startButtonPin = 34;
const int pauseButtonPin = 35;
const int stopButtonPin = 32;

int countUpValue = 0;
int countDownValue = 0;
int countUpTimer = 0;
int countDownTimer = 0;
bool countingUp = false;
bool countingDown = false;

unsigned long previousMillis = 0;
const long interval = 1000;

void setup() {
  // lcd.init();
  // lcd.backlight();

  // lcd.setCursor(0, 0);
  // lcd.print("Count Up & Down");

  // lcd.setCursor(0, 1);
  // lcd.print("Program");

  // delay(3000);
  // lcd.clear();

  matrix.begin();  // Inisialisasi panel RGB matrix
  matrix.setTextWrap(false);
  matrix.setTextSize(1);
  matrix.setTextColor(matrix.Color888(255, 0, 0));  // Warna teks (merah)
  matrix.fillScreen(matrix.Color888(0, 0, 0));  // Bersihkan layar
  matrix.setCursor(0, 0);
  matrix.print("Hello, ESP32!");
  matrix.setCursor(0, 8);  // Geser ke baris kedua
  matrix.print("16x2 Matrix");
  delay(5000);

  Serial.begin(9600);
  pinMode(startButtonPin, INPUT);
  pinMode(pauseButtonPin, INPUT);
  pinMode(stopButtonPin, INPUT);
}
void loop(){
  int startButtonState = digitalRead(startButtonPin);
  int pauseButtonState = digitalRead(pauseButtonPin);
  int stopButtonState = digitalRead(stopButtonPin);

  if (startButtonState == 0) {
    countingUp = true;
    countingDown = true;
  } 
  else if (pauseButtonState == 0) {
    countingUp = false;
    countingDown = false;
  } 
  else if (stopButtonState == 0) {
    countingUp = false;
    countingDown = false;
    countUpValue = 0;
    countDownValue = 0;
    countUpTimer = 0;
    countDownTimer = 0;
  }

  if (Serial.available() > 0) {
    int presetValue = Serial.parseInt();
    if (presetValue > 0) {
      countUpValue = presetValue;
      countDownValue = presetValue;
      countUpTimer = 0;
      countDownTimer = presetValue;
      Serial.begin(presetValue);
    }
  }

  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) {
    if (countingUp) {
      countUpTimer++;
      if (countUpTimer >= countUpValue) {
        countingUp = false;
      }
    }

    if (countingDown) {
      countDownTimer--;
      if (countDownTimer <= 0) {
        countingDown = false;
      }
    }

    // lcd.setCursor(0, 1);
    // lcd.print("Count Up: ");
    // // lcd.setCursor(10, 1);
    // lcd.print(countUpTimer);
    // lcd.print("     ");
    // lcd.setCursor(0, 0);
    // lcd.print("Count Down: ");
    // // lcd.setCursor(12, 0);
    // lcd.print(countDownTimer);
    // lcd.print("     ");

    previousMillis = currentMillis;
  }
}