#include <Arduino.h>
#include <uRTCLib.h>
#include <LiquidCrystal_I2C_Hangul.h>

const byte button_set = 11;
const byte button_up = 12;
const byte button_down = 13;
const byte relay = 10;
const byte buzzer = 9;

byte up_ditekan;
int down_ditekan;
byte set_ditekan;
byte tombol_up;
int tombol_down;
int set_hh;
int set_mm;
int set_ss;
byte menuSet;
byte commitSet;

uRTCLib rtc(0x68);
LiquidCrystal_I2C_Hangul lcd = LiquidCrystal_I2C_Hangul(0x27,16,2); 

char daysOfTheWeek[7][12] = {"AHAD", "SENIN", "SELASA", "RABU", "KAMIS", "JUM'AT", "SABTU"};

void setup() {
  pinMode(button_set, INPUT_PULLUP);
  pinMode(button_up, INPUT_PULLUP);
  pinMode(button_down, INPUT_PULLUP);
  pinMode(relay, OUTPUT);
  pinMode(buzzer, OUTPUT);
  tombol_up = 0;
  tombol_down = 0;
  set_ditekan = 0;
  set_hh = 0;
  set_mm = 0;
  set_ss = 0;

  Serial.begin(9600);
  URTCLIB_WIRE.begin();
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("SMART  PROJECTS");
  lcd.setCursor(1,1);
  lcd.print("BURHAN ALFARISI");
  delay(2000);
  lcd.clear();
  delay(300);

}

void lcdDT(){
  rtc.refresh();  
  lcd.setCursor(0, 0);
  lcd.print(daysOfTheWeek[rtc.dayOfWeek()-1]);
  lcd.print(" ");
  lcd.setCursor(8, 0);
  lcd.print(rtc.day());
  lcd.print('/');
  lcd.print(rtc.month());
  lcd.print('/');
  lcd.print(rtc.year());

  lcd.setCursor(8, 1);
  lcd.print(rtc.hour());
  lcd.print(':');
  lcd.print(rtc.minute());
  lcd.print(':');
  if (rtc.second() < 10) {
    lcd.print(0);
  }
  lcd.println(rtc.second());
  //delay(1000);
}

void loop() {
  lcdDT();

  // cek kondisi tombol set
  if (set_ditekan == 5){
    set_ditekan = 0;
  }
  if (digitalRead(button_set) != 1 ){
    set_ditekan++;
    menuSet = 2; // angka 2 adalah 2x tombol set ditekan
    delay(200);

    // Menu Set waktu relay
    while (set_ditekan == menuSet){

      // variable tombol_up bertambah 1 bila tombol up ditekan 1x
      if (digitalRead(button_up) != 1 ){ 
        tombol_up++; set_hh++; set_mm++; set_ss++;
        if(tombol_up > 59){
          tombol_up = 0; set_hh = 0 set_mm = 59; set_ss = 59;
        if(set_hh > 23){ // mode 24 jam
          set_hh = 0;
        }
        if(set_mm >59){
          set_mm = 0;
        } 
        if (set_ss >59){
          set_ss = 0;
        }
        }
      }

      // variable tombol_down berkurang 1 bila tombol down ditekan 1x
      if (digitalRead(button_down) != 1 ){
        tombol_down--; set_hh--; set_mm--; set_ss--;
        if(tombol_down < 0){
          tombol_down = 59; set_hh = 23 set_mm = 59; set_ss = 59;
        if(set_hh < 1){ // mode 24 jam
          set_hh = 0;
        }
        if(set_mm <0){
          set_mm = 59;
        } 
        if (set_ss <0){
          set_ss = 59;
        }
        }
      }

      if (digitalRead(button_set) != 1 ){
      set_ditekan++;
      delay(200);
      }

      Serial.println();
      Serial.print("\ntombol set : ");
      Serial.print(set_ditekan);
      Serial.print("\ntombol up : ");
      Serial.print(tombol_up);
      Serial.print("\ntombol down : ");
      Serial.print(tombol_down);
      delay(200);
    }

    // commit & apply Set waktu relay
    commitSet = 4;
    while (set_ditekan == commitSet){
      Serial.println();
      Serial.print("\nRelay Aktif Pukul : ");
      Serial.print(set_hh);
      Serial.print(" : ");
      Serial.print(set_mm);
      Serial.print(" : ");
      Serial.print(set_ss);
      if (digitalRead(button_set) != 1 ){
      set_ditekan++;
      delay(200);
      }
      delay(1000);

    }
    Serial.println();
    Serial.print("\ntombol set : ");
    Serial.print(set_ditekan);
    Serial.print("\ntombol up : ");
    Serial.print(tombol_up);
    Serial.print("\ntombol down : ");
    Serial.print(tombol_down);
  delay(200);
  }
}