#include <Wire.h>
#include <RTClib.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ST7789.h>
#include "User_Setup.h"

Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
RTC_DS3231 rtc;

#define BLACK 0x0000
#define WHITE 0xFFFF

void setup() {
  Serial.begin(9600);
  Serial.println("Initializing...");

  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }
  if (rtc.lostPower()) {
    Serial.println("RTC lost power, setting the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
  tft.init(TFT_WIDTH, TFT_HEIGHT);
  tft.setRotation(1);
  // Clear the screen
  tft.fillScreen(BLACK);
  Serial.println("Display initialized.");
}

void loop() {
  static int lastSec = -1;
  DateTime now = rtc.now();
  if (now.second() == lastSec) return; // nic nie rób, jeśli sekunda ta sama
  lastSec = now.second();
  // rysuj tekst w tym samym miejscu, z kolorem tła (bez pełnego czyszczenia)
  tft.setCursor(10, 10);
  tft.setTextSize(4);
  tft.setTextWrap(false);
  tft.setTextColor(WHITE, BLACK); // drugi parametr = kolor TŁA
  char buf[9];
  snprintf(buf, sizeof(buf), "%02d:%02d:%02d", now.hour(), now.minute(), now.second());
  tft.print(buf);
}