#include <IRremote.h>
#include <LiquidCrystal.h>

#define PIN_RECEIVER 2

IRrecv receiver(PIN_RECEIVER);

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

int A = 0;
int B = 0;
int Total;

void setup()
{
  Serial.begin(115200);
  lcd.begin(16, 2);
  lcd.print("B41-RIFKY ALIF ");
  lcd.setCursor(0, 1); // Move cursor to the start of the second line
  lcd.print("Ridho aditianto"); // Display the second name on the LCD
  receiver.enableIRIn(); // Start the receiver
}

void loop()
{
  if (receiver.decode())
  {
    translateIR();
    receiver.resume();

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("A:");
    lcd.println(A);
    lcd.setCursor(6, 0);
    lcd.print("+");
    lcd.setCursor(9, 0);
    lcd.print("B:");
    lcd.println(B);
    lcd.setCursor(0, 1);
    lcd.print("Total:");
    lcd.println(Total);
  }
}

void translateIR()
{
  // Takes command based on IR code received
  switch (receiver.decodedIRData.command)
  {
  case 104: // Angka 0
    if (A == 0)
    {
      lcd.clear();
      A = 0;
      lcd.print("0");
    }
    else
    {
      lcd.clear();
      B = 0;
      lcd.print("0");
    }
    break;
  case 48: // Angka 1
    if (A == 0)
    {
      lcd.clear();
      A = 1;
      lcd.print("1");
    }
    else
    {
      lcd.clear();
      B = 1;
      lcd.print("1");
    }
    break;
  case 24: // Angka 2
    if (A == 0)
    {
      lcd.clear();
      A = 2;
      lcd.print("2");
    }
    else
    {
      lcd.clear();
      B = 2;
      lcd.print("2");
    }
    break;
  case 122: // Angka 3
    if (A == 0)
    {
      lcd.clear();
      A = 3;
      lcd.print("3");
    }
    else
    {
      lcd.clear();
      B = 3;
      lcd.print("3");
    }
    break;
  case 16: // Angka 4
    if (A == 0)
    {
      lcd.clear();
      A = 4;
      lcd.print("4");
    }
    else
    {
      lcd.clear();
      B = 4;
      lcd.print("4");
    }
    break;
  case 56: // Angka 5
    if (A == 0)
    {
      lcd.clear();
      A = 5;
      lcd.print("5");
    }
    else
    {
      lcd.clear();
      B = 5;
      lcd.print("5");
    }
    break;
  case 90: // Angka 6
    if (A == 0)
    {
      lcd.clear();
      A = 6;
      lcd.print("6");
    }
    else
    {
      lcd.clear();
      B = 6;
      lcd.print("6");
    }
    break;
  case 66: // Angka 7
    if (A == 0)
    {
      lcd.clear();
      A = 7;
      lcd.print("7");
    }
    else
    {
      lcd.clear();
      B = 7;
      lcd.print("7");
    }
    break;
  case 74: // Angka 8
    if (A == 0)
    {
      lcd.clear();
      A = 8;
      lcd.print("8");
    }
    else
    {
      lcd.clear();
      B = 8;
      lcd.print("8");
    }
    break;
  case 82: // Angka 9
    if (A == 0)
    {
      lcd.clear();
      A = 9;
      lcd.print("9");
    }
    else
    {
      lcd.clear();
      B = 9;
      lcd.print("9");
    }
    break;
  case 168: // Tombol =
    Total = A + B;
    break;
  case 176: // Tombol C
    A = 0;
    B = 0;
    Total = 0;
    break;
  case 152: // Tombol -
    Total = A - B;
    break;
  }
}