#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
#include <Wire.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

// Define menu items and actions
const char* menuItems[] = {"Item 1", "Item 2", "Item 3", "Item 4"};
int selectedItem = 0;

// Define the button pin for menu navigation
const int upButtonPin = 2; // Replace with your actual button pin number
const int downButtonPin = 4; // Replace with your actual button pin number

void setup() {
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  display.display(); // Initialize with the display on (splash screen)
  delay(2000); // Splash screen delay

  display.clearDisplay();
  display.setTextColor(SSD1306_WHITE);
  display.setTextSize(1);
  display.setCursor(0, 0);
  display.println(menuItems[selectedItem]);
  display.display();
}

void loop() {
  // Add code for button or encoder input to navigate the menu
  // Update the selectedItem variable based on user input

  // Example: You can use digitalRead() to check button states or encoder rotation
  // Example:
  if (digitalRead(upButtonPin) == HIGH) {
    selectedItem = (selectedItem + 1);

     if (selectedItem > 4){
      selectedItem = 4;
    }

    displaySelectedItem();
    delay(200); // Button debounce

   
  }

  if (digitalRead(downButtonPin) == HIGH && selectedItem <=4) {
    selectedItem = (selectedItem - 1);

    if (selectedItem < 0){
      selectedItem = 0;
    }

    displaySelectedItem();
    delay(200); // Button debounce

    
  }
}

void displaySelectedItem() {
  display.clearDisplay();
  display.setCursor(0, 0);
  display.println(menuItems[selectedItem]);
  display.display();
}