#include <avr/wdt.h> //watchdog library, library bawaan
#include <avr/sleep.h>
#include <LiquidCrystal_I2C.h> //i2c library
#include <stdio.h>
#include <Wire.h>
#include <TimeLib.h> //time library
#include "PrayerTimes.h" //prayer time library, kamu bisa download di github, nanti akan di sertakan linknya
#include "formula.h"
#include "quotes.h"

double times[sizeof(TimeName) / sizeof(char*)];
int GMT = 7 ; // zona waktu WIB=7, WITA=8, WIT=9, inisialisasi gmt
void p(char *fmt, ... ) {
  char tmp[128]; // resulting string limited to 128 chars
  va_list args;
  va_start (args, fmt );
  vsnprintf(tmp, 128, fmt, args);
  va_end (args);
  Serial.print(tmp);
}
const int alarm = 13; //pin untuk alarm, jika mau di integrasikan dengan alarm waktu shalat
LiquidCrystal_I2C lcd(0x27, 20, 4); //karena simulasi ini menggunakan lcd 20x4

ISR(WDT_vect)
{
  wdt_disable();  // disable watchdog
}

void myWatchdogEnable(const byte interval)
{
  MCUSR = 0;                          // reset various flags
  WDTCSR |= 0b00011000;               // see docs, set WDCE, WDE
  WDTCSR =  0b01000000 | interval;    // set WDIE, and appropriate delay

  wdt_reset();
  set_sleep_mode (SLEEP_MODE_PWR_DOWN);
  sleep_mode();            // now goes to Sleep and waits for the interrupt
}
void setup() {
  Serial.begin(9600);
  pinMode(alarm, OUTPUT);
  //yang barusan experimen saya, :D
  setTime(17, 40, 00, 13, 3, 2024); //inisialisasi waktu
  set_calc_method(ISNA); //kalkulasi metode, pilihan nya bisa dilihat di library prayertime
  set_asr_method(Shafii); //metode
  set_high_lats_adjust_method(AngleBased);
  set_fajr_angle(18);
  set_isha_angle(18);
}
void loop() {
  lcd.clear();
  displayHijr();
  displayTime();
  // displayQuote(); //menampilkan quote, bisa random ayat atau apa saja,
}
void displayQuote() {
  lcd.clear();
  displayHijr();
  long randNumber;
  randNumber = random(0, 54); //untuk mengambil quote random, karena quote yang saya buat total nya ada 55, maka dibuat random 0 - 54
  lcd.setCursor(0, 2); //mengatur cursor
  // lcd.print(quotes[randNumber]);
  Serial.println(randNumber);
  Serial.println(quotes[randNumber]);
  delay(500);
}
void displayHijr() {
  int bulan = month();
  uint16_t tgl = day();
  hijri H = toHijri(tgl, bulan, year());//mengkonversi tgl sekarang(masehi) ke hijriah, hijri adalah struct yang dibuat dilibrary
  lcd.setCursor(0, 0);
  lcd.print(H.year);
  lcd.print("/");
  lcd.print(hijriMonth[H.month - 1]);
  lcd.print("/");
  lcd.print(H.date);
  Serial.println("Masehi");
  Serial.println(String(tgl) + "/" + String(bulan) + "/" + year());
  Serial.println("Hijriah");
  Serial.print(H.date);
  Serial.print("/");
  Serial.print(H.year);
  Serial.print("/");
  Serial.println(hijriMonth[H.month - 1]);
  delay(5000);
}
void scroll() { //fungsi untuk scroll karakter di lcd
  for (int i = 0; i < 20; i ++) {
    lcd.scrollDisplayLeft();
    delay(100);
  }
  delay(500);
}
void displayTime() {
  int ihtiyat = round((analogRead(15) - 511) / 8.5);//ihtiyat yang diambil dari nilai potensio,
  if (ihtiyat < 0) {
    ihtiyat = 0;
  }

  int gmt = 7;
  float latitude = -7.0642465; //laltitude daerah kamu
  float longitude = 108.08357829999999; //longitude daerah kamu, isi dengan akurat karena mempengaruhi jadwal waktu shalat yang ditampilkan
  get_prayer_times(year(), month(), day(), latitude, longitude, gmt, times);
  int hours, minutes;
  get_float_time_parts(times[0], hours, minutes);
  // imsak
  lcd.setCursor(0, 1); lcd.print("Imsak"); lcd.setCursor(15, 1);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes - 5);
  // subuh
  lcd.setCursor(0, 2); lcd.print("Subuh"); lcd.setCursor(15, 2);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes);

  get_float_time_parts(times[1], hours, minutes);
  // dhuha
  lcd.setCursor(0, 3); lcd.print("Dhuha"); lcd.setCursor(15, 3);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes);
  delay(1000);
  scroll();
  lcd.clear();
  // dzuhur
  get_float_time_parts(times[2], hours, minutes);
  lcd.setCursor(0, 0); lcd.print("Dzuhur"); lcd.setCursor(15, 0);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes);
  // ashar
  get_float_time_parts(times[3], hours, minutes);
  lcd.setCursor(0, 1); lcd.print("Ashar"); lcd.setCursor(15, 1);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes);
  // magrib
  get_float_time_parts(times[5], hours, minutes);
  lcd.setCursor(0, 2); lcd.print("Maghrib"); lcd.setCursor(15, 2);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes);
  // isya
  get_float_time_parts(times[6], hours, minutes);
  lcd.setCursor(0, 3); lcd.print("Isya"); lcd.setCursor(15, 3);
  lcd.print(hours);   lcd.print(":");     lcd.print(minutes);
  delay(1000);
  scroll();
}