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

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

char daysOfTheWeek[7][12] = {
  "Minggu", "Senin", "Selasa", "Rabu", "Kamis", "Jumat", "Sabtu"
};

void setup() {
  myservo.attach(3);
  myservo.write(0);

  Serial.begin(9600);
  lcd.begin(16, 2);
  lcd.backlight();

  if (!rtc.begin()) {
    lcd.print("RTC tdk ditemukan!");
    while (1);
  }

  if (!rtc.isrunning()) {
    lcd.clear();
    lcd.print("RTC blm jalan!");
    // Kalau RTC baru dipasang, aktifkan baris di bawah ini sekali saja
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // set waktu dari komputer
  }

  lcd.clear();
}

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

  // ==== TAMPILKAN HARI & TANGGAL ====
  lcd.setCursor(0, 0);
  lcd.print("                ");
  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());

  // ==== TAMPILKAN JAM ====
  lcd.setCursor(0, 1);
  lcd.print("                ");
  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());

  // ==== KONTROL SERVO ====
  // Servo akan bergerak ke 90° tepat jam 08:23:00
  // dan kembali ke 0° setelah 5 detik 
  if (now.hour() == 8 && now.minute() == 37 && now.second() == 0) {
    myservo.write(90);
    delay(5000); // tahan posisi 5 detik
    myservo.write(0);
  }

  delay(1000);
}