#include <Arduino.h>
#include <U8g2lib.h>
#include <SimpleRotary.h>
#include <Wire.h> // library requires for IIC communication

int CLK = 2;
int DT = 3;
int SW = 4;

SimpleRotary rotary(CLK,DT,SW);

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); // initialization for the used OLED display
static const unsigned char image_Lock_7x8_bits[] U8X8_PROGMEM = {0x1c,0x22,0x22,0x7f,0x7f,0x77,0x7f,0x3e};
static const unsigned char image_Bluetooth_Idle_5x8_bits[] U8X8_PROGMEM = {0x04,0x0d,0x16,0x0c,0x0c,0x16,0x0d,0x04};
static const unsigned char image_Volup_8x6_bits[] U8X8_PROGMEM = {0x48,0x8c,0xaf,0xaf,0x8c,0x48};
static const unsigned char image_Alert_9x8_bits[] U8X8_PROGMEM = {0x10,0x00,0x38,0x00,0x28,0x00,0x6c,0x00,0x6c,0x00,0xfe,0x00,0xee,0x00,0xff,0x01};
int progress = 0; // progress of the progressbar
char buffer[32]; // helper buffer to construct a string to be displayed




void setup() {

    Serial.begin(9600);
    u8g2.begin();

}

void loop() {
  u8g2.setBitmapMode(1);
	u8g2.drawFrame(12, 21, 104, 20);
	u8g2.drawBox(14, 23, progress, 16); // draw the progressbar fill
	u8g2.setFont(u8g2_font_helvB08_tr);
	sprintf(buffer, "Progress: %d%%", progress); // construct a string with the progress variable
	u8g2.drawStr(33, 53, buffer); // display the string
	u8g2.setFont(u8g2_font_haxrcorp4089_tr);
	u8g2.drawStr(0, 7, "Progress Bar Screen");
	u8g2.drawLine(0, 9, 127, 9);
	u8g2.drawXBMP( 100, 0, 7, 8, image_Lock_7x8_bits);
	u8g2.drawXBMP( 111, 0, 5, 8, image_Bluetooth_Idle_5x8_bits);
	u8g2.drawXBMP( 120, 1, 8, 6, image_Volup_8x6_bits);
	u8g2.drawXBMP( 22, 45, 9, 8, image_Alert_9x8_bits);
  u8g2.sendBuffer();	

  byte i;

  // 0 = not turning, 1 = CW, 2 = CCW
  i = rotary.rotate();

  if ( i == 1 ) {
    Serial.println("CW");
    if (progress != 100){
        progress++;


    }

  }

  if ( i == 2 ) {
    if (progress > 0){
        progress--;


    }
    Serial.println("CCW");
  }
  if (progress == 100){
    progress = 0;
  }
}