#include <Arduino.h>
#include <GyverSegment.h>
#include <EncButton.h>

#define CLK 2
#define DIO 3
#define LED 12
#define BUTTON 4

Disp1637Colon disp(DIO, CLK);
Button bt(BUTTON);

int8_t hour = 20, minute = 15, second, flag;

// эмуляция времени
unsigned long previousMillis = 0;
const unsigned long interval = 1000;
void time() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;
    second++;
  }
  if(second > 59) {
    second = 0;
    minute++;
    if (minute > 59) {
      minute = 0;
      hour++;
      if (hour > 23) hour = 0;
    }
  }
}

void setup() {
  disp.clear();
  disp.brightness(5);
  pinMode(LED, OUTPUT);
}

void loop() {
  bt.tick();
  if (bt.holding()) set_time();
  if (bt.click()) {
    disp.setCursor(0);
    disp.print("hold");
    disp.update();
    disp.delay(1000);
  }
  disp_show();
  time();
}

void disp_show() {
  disp.setCursor(0);
  if (hour < 10) {
    disp.print(0);
  }
  disp.print(hour);
  disp.setCursor(2);
  if (minute < 10) {
    disp.print(0);
  }
  disp.print(minute);
  disp.colon(true);
  disp.update();
}

void set_time() {
  flag = 0;
  disp.setCursor(0);
  disp.print("time");
  disp.update();
  disp.delay(1000);
  while (true) {
    bt.tick();
    if (flag == 0) {
      if (bt.click()) {
      hour++;
      if (hour > 23) hour = 0; 
      }
    }
    if (flag == 1) {
      if (bt.click()) {
      minute++;
      if (minute > 59) minute = 0; 
      }
    }
    if (bt.holding()) {
      flag++;
      if (flag == 1) {
        disp.setCursor(2);
        disp.print("__");
      }
      disp.update();
      disp.delay(1000);
      if (flag == 2) {
        second = 0;
        disp.setCursor(0);
        disp.print("set_");
        disp.update();
        disp.delay(1000);
        break;
      }
    }
    disp.setCursor(0);
    if (hour < 10) {
      disp.print(0);
    }
    disp.print(hour);
    disp.setCursor(2);
    if (minute < 10) {
      disp.print(0);
    }
    disp.print(minute);
    disp.colon(true);
    disp.update();
  }
}