#include <LiquidCrystal.h>

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

String menuItems[] = {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5", "Item 6"};
int selectedMenuItem = 0;
int Page = 0;

const int buttonPin1 = 2; // button for moving up
const int buttonPin2 = 3; // button for moving down
const int buttonPin3 = 4; // button for selecting item

void setup() {
  lcd.begin(20, 4);
  pinMode(buttonPin1, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);

  Serial.begin(115200);
}

void displayMenu() {
  //lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Select an Item:");
  int x = 0;
  for (int i = 0; i < 6; i++) {
    x = i;
    lcd.setCursor(0, i + 1);

    if (selectedMenuItem == i) {
      lcd.print(">");
    } else {
      lcd.print(" ");
    }

    lcd.print(menuItems[i]);
  }

}

void handleInput() {
  if (digitalRead(buttonPin1) == LOW) {

    selectedMenuItem--;
    if (selectedMenuItem < 0) {
      selectedMenuItem = 5;
    }
    delay(250);
  }
  if (digitalRead(buttonPin2) == LOW) {
    selectedMenuItem++;
    if (selectedMenuItem > 5) {
      selectedMenuItem = 0;
    }
    delay(250);
  }
  if (digitalRead(buttonPin3) == LOW) {
    lcd.setCursor(10, 4);
    lcd.print(selectedMenuItem);

  }
}

void loop() {
  displayMenu();
  handleInput();
}