#include <ezButton.h> 
#include <TM1637Display.h>

#define CLK_PIN 25 
#define DT_PIN  26 
#define SW_PIN  27 

const int CLK = 33; 
const int DIO = 32; 

#define DIRECTION_CW  0  
#define DIRECTION_CCW 1  

const int barPins[] = {2, 0, 4, 16, 17, 5, 18, 19,22, 21};

int counter = 0;
int direction = DIRECTION_CW;
int CLK_state;
int prev_CLK_state;

ezButton button(SW_PIN); 
TM1637Display display(CLK, DIO); 

void setup() {
  Serial.begin(9600);

  display.setBrightness(0x0a);

  pinMode(CLK_PIN, INPUT);
  pinMode(DT_PIN, INPUT);
  button.setDebounceTime(50);  

  for (int i = 0; i < 10; i++) {  
    pinMode(barPins[i], OUTPUT);
    digitalWrite(barPins[i], LOW);  
  }

  prev_CLK_state = digitalRead(CLK_PIN);
}

void loop() {
  button.loop();  

  CLK_state = digitalRead(CLK_PIN);

  if (CLK_state != prev_CLK_state && CLK_state == HIGH) {
    if (digitalRead(DT_PIN) == HIGH && counter > 0) {
      counter--;
      direction = DIRECTION_CCW;
      digitalWrite(barPins[counter], LOW);
      display.showNumberDec(counter);
    } else if(digitalRead(DT_PIN) == LOW && counter < 10) {
      digitalWrite(barPins[counter], HIGH);
      counter++;
      direction = DIRECTION_CW;
      display.showNumberDec(counter);
    }
  }
  prev_CLK_state = CLK_state;

}