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

#define SCREEN_WIDTH 128 // Lebar Oled dalam Pixel
#define SCREEN_HEIGHT 64 // Tinggi Oled dalam Pixel

#define OLED_RESET     4 
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

const unsigned char logoELITE[] PROGMEM = {
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x07, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xf8, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xf8, 0x00, 0x00, 0x7c, 0x00, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0xf8, 0x00, 0x01, 0xf0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0xf8, 0x00, 0x01, 0xe0, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x89, 0x8a, 0x56, 0xa8, 0xa8, 0xea, 0xaa, 0x51, 0x56, 0xa2, 0xa6, 0xb4, 0x58, 0x00, 0x00, 0x00,
  0xe9, 0xd0, 0x1d, 0x0c, 0xa0, 0xeb, 0xa4, 0x08, 0x52, 0xa4, 0x36, 0x97, 0x70, 0x00, 0x00, 0x00,
  0x89, 0x10, 0x15, 0x2a, 0xa0, 0xdb, 0xa5, 0xb8, 0x52, 0x64, 0x05, 0x94, 0x50, 0x00, 0x00, 0x00,
  0xee, 0xcc, 0x12, 0xea, 0xb8, 0xca, 0xb9, 0xa0, 0x5c, 0x23, 0x3c, 0x97, 0x48, 0x00, 0x00, 0x00
};

bool tambah, kurang, selanjutnya, sebelumnya;
int angka, halaman = 0;
bool click, enter = false;
int page = 1;
void setup() {
  pinMode(A0, INPUT_PULLUP);
  pinMode(A1, INPUT_PULLUP);
  pinMode(A2, INPUT_PULLUP);
  pinMode(A3, INPUT_PULLUP);
  Serial.begin(9600);
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3D)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  // Clear the buffer
  display.clearDisplay();
}

void home() {
      display.clearDisplay();                 //Membersihkan tampilan
      display.setTextSize(1);                 //Ukuran tulisan
      display.setTextColor(WHITE);    //Warna Tulisan
      display.setCursor(35,0);                 // Koordinat awal tulisan (x,y) dimulai dari atas-kiri
      display.println(F("[ ELITE ]"));       //Menampilkan Tulisan RobotikIndonesia
      display.setCursor(12,15);                 // Koordinat awal tulisan (x,y) dimulai dari atas-kiri
      display.println("Proyek Aplikasi Berbasis Sistem Menu");   
      display.setCursor(45,35);  
      if(click) {
      display.setTextColor(BLACK, WHITE);
      display.println("Plan?");            //Menampilkan nilai variabel dataInt
      } else {
      display.setTextColor(WHITE);
      display.println("Plan?");            //Menampilkan nilai variabel dataInt
      }
      display.display();                      //Mulai Menampilkan
}
void pageTwo() {
if(sebelumnya == false && click == true) {
    enter = false;
    click = false;
    page = 1;
    home();
  }
      display.clearDisplay();                 //Membersihkan tampilan
      display.setTextSize(1);                 //Ukuran tulisan
      display.setTextColor(SSD1306_WHITE);    //Warna Tulisan
      display.setCursor(0,0);                 // Koordinat awal tulisan (x,y) dimulai dari atas-kiri
      display.println(F("HALAMAN 2"));       //Menampilkan Tulisan RobotikIndonesia
      display.display();                //Mulai Menampilkan
}

void loop() {
  tambah = analogRead(A0);
  kurang = analogRead(A1);
  sebelumnya = analogRead(A2);
  selanjutnya = analogRead(A3);

  if(page == 1) {
home();

  if(tambah == false) {
    click = true;
  } else if(kurang == false) {
    click = false;
  }

  if(selanjutnya == false && click == true) {
    enter = true;
    page = 2;
  } else if(sebelumnya == false && click == true) {
    enter = false;
    click = false;
    page = 1;
    home();
  }
  }
  
  if(page == 2) {
    pageTwo();
  }
 

}