/**
   Arduino Calculator

   Copyright (C) 2020, Uri Shaked.
   Released under the MIT License.
*/

#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>

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

/* Keypad setup */
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 3;
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3'},
  {'4', '5', '6'},
  {'7', '8', '9'},
  {'*', '0', '#'}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

uint64_t value = 0;

void showWelcomeMessage() {
  lcd.print("Meu Amigo");
  lcd.setCursor(0, 1);
  lcd.print("Andre Soratto");
  delay(1000);
}

void updateCursor() {
  if (millis() / 250 % 2 == 0 ) {
    lcd.cursor();
  } else {
    lcd.noCursor();
  }
}

void setup() {
  Serial.begin(115200);
  lcd.begin(16, 2);

  showWelcomeMessage();
  lcd.clear();
  lcd.cursor();

  lcd.setCursor(0, 0);

  armBombRoutine();
}

String armBombRoutine() {
  lcd.print("Pressione * para");
  lcd.setCursor(1,1);
  lcd.print("armar a bomba");
}

String inputBombCode() {
  lcd.print("Inserir codigo:");
  lcd.setCursor(5, 1);
  lcd.print("[____]");
  lcd.setCursor(6, 1);
  String result = "";
  while (result.length() < 4) {
    char key = keypad.getKey();
    if (key >= '0' && key <= '9') {
      lcd.print('*');
      result += key;
    }
  }
  return result;
}

String memory = "";
String current = "";


void processInput(char key) {
  if(key == '#'){
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print(" ");
  }
  lcd.print(key);
}

void loop() {
  updateCursor();
  char key = keypad.getKey();
  if (key) {
    processInput(key);
  }
}