#pragma once
#include "LCD_I2C.hpp"
#include "keypad.hpp"
#include "tokenizer.hpp"
#define LCD_COLUMNS 16
#define LCD_ROWS 2
#define I2C_ADDRESS 0x27

class Calculator {
private:
  // Private attributes.
  LCD_I2C *display;
  Keypad *default_keypad;
  Tokenizer tokenizer = Tokenizer();
  Token **tokens;
  char default_keypad_chars[4][4] = {
    {'1', '2', '3', '+'},
    {'4', '5', '6', '-'},
    {'7', '8', '9', '*'},
    {'(', '0', ')', '='}
  };
  char secondary_keypad[4][4] = {
    {'1', '2', '3', '+'},
    {'4', '5', '6', '-'},
    {'7', '8', '9', '/'},
    {'(', '0', ')', '='}
  };
  uint keypad_col_pins[4] = {6, 7, 8, 9};
  uint keypad_row_pins[4] = {16, 17, 18, 19};
  // End of private attributes.
  // Private methods.
  void processInputs();
  // End of private methods.
public:
  Calculator();
  ~Calculator();
  void run();
};