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

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

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

  lcd.init();
  lcd.backlight();


  if (!rtc.begin()) {
    Serial.println("RTC Tidak Ditemukan");
    Serial.flush();
    while (true)
      ;
  }

  rtc.adjust(DateTime((__DATE__), (__TIME__)));
}

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

  int year = now.year();
  int month = now.month();
  int day = now.day();
  int hour = now.hour();
  int minute = now.minute();
  int second = now.second();
  char daysOfWeek[7][12] = {
    "Minggu",
    "Senin",
    "Selasa",
    "Rabu",
    "Kamis",
    "Jum'at",
    "Sabtu"
  };

  //via LCD 16x2 (Komunikasi I2C)
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(daysOfWeek[now.dayOfTheWeek()]);
  lcd.print(day);
  lcd.print("/");
  lcd.print(month);
  lcd.print("/");
  lcd.print(year);
      
  lcd.setCursor(4, 1);  
  lcd.print(hour);
  lcd.print(":");
  lcd.print(minute);
  lcd.print(":");
  lcd.print(second);
  delay(1000);
  delay(5000); 

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("S");
  delay(250);
  lcd.print("E");
  delay(250);
  lcd.print("M");
  delay(250);
  lcd.print("A");
  delay(250);
  lcd.print("N");
  delay(250);
  lcd.print("G");
  delay(250);
  lcd.print("A");
  delay(250);
  lcd.print("T ");
  delay(250);

  lcd.print("N");
  delay(250);
  lcd.print("I");
  delay(250);
  lcd.print("N");
  delay(250);
  lcd.print("G");
  delay(250);


  lcd.setCursor(1, 1);
  //lcd.print(hour);
  lcd.print("G");
  delay(250);
  lcd.print("O");
  delay(250);
  lcd.print("O");
  delay(250);
  lcd.print("D ");
  delay(250);
  lcd.print("N");
  delay(250);
  lcd.print("I");
  delay(250);
  lcd.print("G");
  delay(250);
  lcd.print("H");
  delay(250);
  lcd.print("T");
  delay(250);
  //lcd.print(minute);
  //lcd.print(second);

  // via Serial Monitor (Komunikasi UART).
  //Serial.print(daysOfWeek[now.dayOfTheWeek()]);
  Serial.print("SEMANGAT NING ");
  //Serial.print(now.day(), DEC);
  Serial.print("GOOD NIGHT");
  //Serial.print(now.month(), DEC);
  //Serial.print('/');
  //Serial.print(now.year(), DEC);
  Serial.println();

  //Serial.print("Jam : ");
  //Serial.print(now.hour(), DEC);
  //Serial.print(':');
  //Serial.print(now.minute(), DEC);
  //Serial.print(':');
  //Serial.println(now.second(), DEC);
  delay(1000);
}