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

int x = 0;
int lastCount = 0; // Menyimpan nilai terakhir hitungan
int input = 7;
int state = 0;
int resetButton = 6;
int startButton = 3;
int stopButton = 2;
const int ledPin = 5;
const int resetLedPin = 4;
const int ledStartPin = 8;

bool counting = false;

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("fusion splice");
  lcd.setCursor(0, 1);
  lcd.print(" Project");
  delay(5000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("fusion splice ");
  lcd.setCursor(0, 1);
  lcd.print(x);
  lcd.print("   = Finish       ");

  pinMode(resetButton, INPUT_PULLUP);
  pinMode(startButton, INPUT_PULLUP);
  pinMode(stopButton, INPUT_PULLUP);
  pinMode(ledPin, OUTPUT);
  pinMode(resetLedPin, OUTPUT);
  pinMode(ledStartPin, OUTPUT);
}

void loop() {
  int counter = digitalRead(input);

  int resetButtonState = digitalRead(resetButton);
  int startButtonState = digitalRead(startButton);
  int stopButtonState = digitalRead(stopButton);

  if (resetButtonState == LOW) {
    resetCounter();
  }

  if (startButtonState == LOW && !counting) {
    counting = true;
    digitalWrite(ledStartPin, HIGH);
    lcd.setCursor(0, 1);
    lcd.print("Start Pressed   ");
    delay(1000);
    lcd.setCursor(0, 1);
    lcd.print("        = Finish  ");
  }

  if (stopButtonState == LOW && counting) {
    counting = false;
    digitalWrite(ledStartPin, LOW);
    lcd.setCursor(0, 1);
    lcd.print("Stop Pressed  ");
    delay(1000);
    lcd.setCursor(0, 1);
    lcd.print("Last Count =  "); // Pesan "Last Count = " sebelum nilai terakhir hitungan
    lcd.print(lastCount); // Menampilkan nilai terakhir hitungan pada layar
  }

  if (counting) {
    if (counter == HIGH) {
      if (state == 0) {
        incrementCounter();
        state = 1;
      }
    } else {
      state = 0;
    }
  }
}

void resetCounter() {
  x = 0;
  lastCount = 0;
  counting = false; // Atur status counting ke false setelah reset
  lcd.setCursor(0, 1);
  lcd.print("          Reset       ");
  digitalWrite(resetLedPin, HIGH);
  delay(2000);
  lcd.setCursor(0, 1);
  lcd.print("                      ");
  digitalWrite(resetLedPin, LOW);
}

void incrementCounter() {
  x++;
  lastCount = x; // Menyimpan nilai terakhir hitungan
  lcd.setCursor(0, 1);
  lcd.print("     ");
  lcd.setCursor(0, 1);
  lcd.print(x);
  digitalWrite(ledPin, HIGH);
  delay(500);
  digitalWrite(ledPin, LOW);
}