#include "pitches.h"
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <RTClib.h> // Include the RTC library

LiquidCrystal_I2C lcd(0x27,20,4); 
RTC_DS3231 rtc; // Create an RTC object

//setup emot
byte customChar[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
  0b00000,
};

// setup hw
int SPEAKER_PIN = 11;
int SPEAKER = SPEAKER_PIN;
#define NUM_OF_NOTES 28
#define PAUSE 0
// end of custom

#define NOTE_C5 523
#define NOTE_D5 587
#define NOTE_A5 880
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_G5 784
#define NOTE_AS5 932
#define NOTE_C6 1047

int NOTE_SEQ[NUM_OF_NOTES] = {
  NOTE_C5, NOTE_C5, NOTE_D5, NOTE_C5, NOTE_F5, NOTE_E5, PAUSE,
  NOTE_C5, NOTE_C5, NOTE_D5, NOTE_C5, NOTE_G5, NOTE_F5, PAUSE,
  NOTE_C5, NOTE_C5, NOTE_C6, NOTE_A5, NOTE_F5, NOTE_E5, NOTE_D5, PAUSE,
  NOTE_AS5, NOTE_AS5, NOTE_A5, NOTE_F5, NOTE_G5, NOTE_F5
}; 

int NOTE_LEN[NUM_OF_NOTES] = {
  4, 2, 8, 8, 8, 16, 50,
  4, 2, 8, 8, 8, 16, 100,
  4, 2, 8, 8, 8, 8, 16, 150,
  4, 2, 8, 8, 8, 20
};

int TEMPO = 75;

void playNote(int pitch, int duration) {
  tone(SPEAKER, pitch);
  delay(duration);
  noTone(SPEAKER);
}

void setup() {
 Wire.begin(); // Initialize I2C communication
  lcd.init();   // Initialize the LCD
  lcd.backlight(); // Turn on the LCD backlight


  lcd.createChar(0, customChar);
  lcd.setCursor(0, 0);
  lcd.write((byte)0);
  lcd.print("happy birthday");
  lcd.setCursor(15, 0);
  lcd.write((byte)0);
  lcd.setCursor(4, 1);
  lcd.write((byte)0);
  lcd.print("Sassy");
  lcd.setCursor(10, 1);
  lcd.write((byte)0);

  for (int i = 0; i < NUM_OF_NOTES; i++) {
    if (NOTE_SEQ[i] != PAUSE) {
      playNote(NOTE_SEQ[i], NOTE_LEN[i] * TEMPO);
      delay(TEMPO);
    } else {
      delay(NOTE_LEN[i]);
    }
  }

  
  if (!rtc.begin()) {
    lcd.setCursor(0, 2);
    lcd.print("Couldn't find RTC");
    while (1);
  }

  if (rtc.lostPower()) {
    lcd.setCursor(0, 2);
    lcd.print("RTC lost power");
    // Uncomment the next line to set the RTC to the current date & time
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  delay(1000);
}

void loop() {
  DateTime now = rtc.now(); // Dapatkan waktu saat ini

  // Tampilkan waktu saat ini pada LCD
  lcd.setCursor(0, 1);
  lcd.print("Time: ");
  lcd.print(now.hour());
  lcd.print(':');
  if (now.minute() < 10) lcd.print('0'); // Tambahkan nol di depan jika diperlukan
  lcd.print(now.minute());
  lcd.print(':');
  if (now.second() < 10) lcd.print('0'); // Tambahkan nol di depan jika diperlukan
  lcd.print(now.second());

  // Tampilkan tanggal saat ini pada LCD dengan hari di depan
  lcd.setCursor(0, 0);
  lcd.print("Date: ");
  if (now.day() < 10) lcd.print('0'); // Tambahkan nol di depan jika diperlukan
  lcd.print(now.day());
  lcd.print('/');
  if (now.month() < 10) lcd.print('0'); // Tambahkan nol di depan jika diperlukan
  lcd.print(now.month());
  lcd.print('/');
  lcd.print(now.year());

  delay(1000); // Perbarui waktu setiap detik
}