#include <ESP32Servo.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>
#include <EEPROM.h>

#define btn1 25
#define btn2 26
#define btn3 27

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Alamat I2C LCD
RTC_DS1307 rtc;  // Inisialisasi RTC DS1307
Servo servoMotor;  // Inisialisasi objek Servo

int servoPin = 12;  // Tentukan pin servo
int alarm1Hour, alarm1Minute, alarm2Hour, alarm2Minute;
unsigned long startTime = 0;
bool isPressing = false;
int menuState = 0;  // 0: menu utama, 1: setting alarm 1, 2: setting alarm 2

void setup() {
  lcd.begin(16, 2);
  lcd.init();
  lcd.backlight();

  Serial.begin(9600);

  // Setup RTC
  if (!rtc.begin()) {
    Serial.println("RTC tidak terdeteksi!");
    while (1);
  }

  if (!rtc.isrunning()) {
    Serial.println("RTC tidak berjalan, set waktu ke sekarang.");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));  // Set waktu saat compile
  }

  // Setup Servo
  servoMotor.attach(servoPin);  // Hubungkan servo ke pin yang ditentukan
  servoMotor.write(0);  // Mulai dengan posisi servo tertutup

  // Gunakan internal pull-up
  pinMode(btn1, INPUT_PULLUP);
  pinMode(btn2, INPUT_PULLUP);
  pinMode(btn3, INPUT_PULLUP);

  // Load alarm times from EEPROM
  alarm1Hour = EEPROM.read(0);
  alarm1Minute = EEPROM.read(1);
  alarm2Hour = EEPROM.read(2);
  alarm2Minute = EEPROM.read(3);
}

void loop() {
  DateTime now = rtc.now();
  
  tampilkanWaktu(now);
  cekAlarm(now);
  
  switch (menuState) {
    case 0:
      pilihMenu();
      break;
    case 1:
      settingAlarm(1); // Menampilkan pengaturan alarm 1
      break;
    case 2:
      settingAlarm(2); // Menampilkan pengaturan alarm 2
      break;
  }
  
  delay(100);  // Perbarui setiap 100ms
}

void tampilkanWaktu(DateTime now) {
  lcd.setCursor(0, 0);
  lcd.print("Time: ");
  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());

  lcd.setCursor(0, 1);
  lcd.print("Date: ");
  if (now.day() < 10) lcd.print("0");
  lcd.print(now.day());
  lcd.print("/");
  if (now.month() < 10) lcd.print("0");
  lcd.print(now.month());
  lcd.print("/");
  lcd.print(now.year());
}

void cekAlarm(DateTime now) {
  // Cek apakah sudah waktu untuk memberi pakan ikan
  if ((now.hour() == alarm1Hour && now.minute() == alarm1Minute) || 
      (now.hour() == alarm2Hour && now.minute() == alarm2Minute)) {
    beriPakan();  // Panggil fungsi untuk memberi pakan
  }
}

void beriPakan() {
  servoMotor.write(90);  // Buka katup pakan (gerakkan servo ke posisi 90 derajat)
  delay(2000);  // Tunggu selama 2 detik dengan katup terbuka
  servoMotor.write(0);  // Tutup katup pakan (gerakkan servo kembali ke posisi 0 derajat)
}

void pilihMenu() {
  // Jika tombol 1 ditekan selama 3 detik, masuk ke setting alarm 1
  if (digitalRead(btn1) == LOW) {
    startTime = millis();  // Catat waktu saat pertama kali tombol ditekan
    isPressing = true;     // Tandai bahwa kita sedang dalam proses menghitung waktu
    while (digitalRead(btn1) == LOW);  // Tunggu tombol dilepas
    if (millis() - startTime >= 3000) {
      menuState = 1;  // Masuk ke setting alarm 1
    }
  }
  // Jika tombol 2 ditekan selama 3 detik, masuk ke setting alarm 2
  if (digitalRead(btn2) == LOW) {
    startTime = millis();  // Catat waktu saat pertama kali tombol ditekan
    isPressing = true;     // Tandai bahwa kita sedang dalam proses menghitung waktu
    while (digitalRead(btn2) == LOW);  // Tunggu tombol dilepas
    if (millis() - startTime >= 3000) {
      menuState = 2;  // Masuk ke setting alarm 2
    }
  }
}

void settingAlarm(int alarmNumber) {
  lcd.clear();
  lcd.setCursor(0, 0);
  if (alarmNumber == 1) {
    lcd.print("Set Alarm 1");
  } else {
    lcd.print("Set Alarm 2");
  }

  // Tombol untuk mengatur jam dan menit
  if (digitalRead(btn1) == LOW) {
    delay(100); // Debounce
    if (alarmNumber == 1) {
      alarm1Hour = (alarm1Hour + 1) % 24; // Ubah jam alarm 1
      EEPROM.write(0, alarm1Hour);
      EEPROM.commit();
    } else {
      alarm2Hour = (alarm2Hour + 1) % 24; // Ubah jam alarm 2
      EEPROM.write(2, alarm2Hour);
      EEPROM.commit();
    }
  } else if (digitalRead(btn2) == LOW) {
    delay(100); // Debounce
    if (alarmNumber == 1) {
      alarm1Minute = (alarm1Minute + 1) % 60; // Ubah menit alarm 1
      EEPROM.write(1, alarm1Minute);
      EEPROM.commit();
    } else {
      alarm2Minute = (alarm2Minute + 1) % 60; // Ubah menit alarm 2
      EEPROM.write(3, alarm2Minute);
      EEPROM.commit();
    }
  } else if (digitalRead(btn3) == LOW) {
    delay(100); // Debounce
    menuState = 0; // Kembali ke menu utama
  }

  lcd.setCursor(0, 1);
  lcd.print("Hour: ");
  if (alarmNumber == 1) {
    lcd.print(alarm1Hour);
  } else {
    lcd.print(alarm2Hour);
  }
  lcd.print(" Min: ");
  if (alarmNumber == 1) {
    lcd.print(alarm1Minute);
  } else {
    lcd.print(alarm2Minute);
  }
}