#include "RTClib.h"
#include "RTClib.h"
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);
RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
int lastSecond = -1;

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();

  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }
}

void loop() {
  DateTime now = rtc.now();

  // Only update display if the second has changed to reduce flickering
  if (now.second() != lastSecond) {
    lastSecond = now.second();

    // Display the current date and time on the LCD
    lcd.setCursor(0, 0);
    lcd.print(daysOfTheWeek[now.dayOfTheWeek()]);
    lcd.print(" ");
    lcd.print(now.day());
    lcd.print("/");
    lcd.print(now.month());
    lcd.print("/");
    lcd.print(now.year());

    // Display the time with leading zeros
    lcd.setCursor(0, 1);
    if (now.hour() < 10) lcd.print('0');
    lcd.print(now.hour());
    lcd.print(':');
    if (now.minute() < 10) lcd.print('0');
    lcd.print(now.minute());
    lcd.print(':');
    if (now.second() < 10) lcd.print('0');
    lcd.print(now.second());

    // Serial monitor output for debugging
    Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
    Serial.print(" ");
    Serial.print(now.day());
    Serial.print("/");
    Serial.print(now.month());
    Serial.print("/");
    Serial.print(now.year());
    Serial.print(" ");
    Serial.print(now.hour());
    Serial.print(":");
    Serial.print(now.minute());
    Serial.print(":");
    Serial.println(now.second());
  }

  delay(1000); // Update every second
}