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

LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows

uint8_t DAILY_EVENT_PAGI_HH = 9; // waktu penyiraman pagi : jam
uint8_t DAILY_EVENT_PAGI_MM = 42; // waktu penyiraman pagi : menit
uint8_t DAILY_EVENT_SORE_HH = 9; // waktu penyiraman sore : jam
uint8_t DAILY_EVENT_SORE_MM = 44; // waktu penyiraman sore : menit
RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {
  "Sunday",
  "Monday",
  "Tuesday",
  "Wednesday",
  "Thursday",
  "Friday",
  "Saturday"
};

#define PIN_TRIG 3 
#define PIN_ECHO 2

void setup() {
  // Hanya berjalan sekali setelah mulai atau reset
Serial.begin(9600);

// output yang berjalan
pinMode(7, OUTPUT);  // relay ke pompa
pinMode(8, OUTPUT);  // buzzer
pinMode(13, OUTPUT); // LED batas air darurat habis
pinMode(12, OUTPUT); // LEDbatas pengisian air 
pinMode(11, OUTPUT); // LED batas air berlebih

// inisiasi LCD
lcd.init(); 
lcd.backlight();

// sensor jarak
pinMode(PIN_TRIG, OUTPUT);
pinMode(PIN_ECHO, INPUT);

// Real Time Clock
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // sets the RTC to the date & time on PC this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

  // sets the RTC with an explicit date & time, for example to set
  // January 21, 2021 at 3am you would call:
  // rtc.adjust(DateTime(2021, 1, 21, 3, 0, 0));

// inisiasi pompa
digitalWrite(7,HIGH);
delay(3000);
digitalWrite(7,LOW);

}

void loop() {
// kondisi output keadaan mati
digitalWrite(7, LOW);
noTone(8);
digitalWrite(13,LOW);
digitalWrite(12,LOW);
digitalWrite(11,LOW);
lcd.clear();         

// kontrol sensor jarak
digitalWrite(PIN_TRIG, HIGH);
delayMicroseconds(10);
digitalWrite(PIN_TRIG, LOW);

int duration = pulseIn(PIN_ECHO, HIGH);
int distance = duration/58;
Serial.print("Distance in CM: ");
Serial.println(distance);

// kontrol pompa
DateTime now = rtc.now();
  printTime(now);
  if (now.hour()   == DAILY_EVENT_PAGI_HH &&
      now.minute() == DAILY_EVENT_PAGI_MM ||
      now.hour()   ==  DAILY_EVENT_SORE_HH &&
      now.minute() ==  DAILY_EVENT_SORE_MM) {
        if (distance<350){
          Serial.println("Penyiraman air");
          digitalWrite(7, HIGH);
          delay(10000);
          digitalWrite(7, LOW);
          lcd.setCursor(2, 0);
          lcd.print("Penyiraman!!");
          delay(50000);
        }
        else{
          digitalWrite(7, LOW);
        }
  }

// LCD
lcd.setCursor(0,0);
lcd.print("Kondisi:");
LCDTime(now);

// kontrol LED
if (distance>300 && distance<350){
  digitalWrite(12,HIGH);
  lcd.setCursor(8, 0);
  lcd.print("Kurang");
}
if (distance>=100 && distance<=300){
  lcd.setCursor(8, 0);
  lcd.print("Terisi");
}
if (distance>10 && distance<100) {
  digitalWrite(11,HIGH);
  lcd.setCursor(8, 0);
  lcd.print("Penuh");
}
if (distance>=350){          
  digitalWrite(13,HIGH);
  lcd.setCursor(8, 0);
  lcd.print("Habis");
  tone(8, 512); 
}
delay(1000);
}

void printTime(DateTime time) {
  Serial.print("TIME: ");
  Serial.print(time.year(), DEC);
  Serial.print('/');
  Serial.print(time.month(), DEC);
  Serial.print('/');
  Serial.print(time.day(), DEC);
  Serial.print(" (");
  Serial.print(daysOfTheWeek[time.dayOfTheWeek()]);
  Serial.print(") ");
  Serial.print(time.hour(), DEC);
  Serial.print(':');
  Serial.print(time.minute(), DEC);
  Serial.print(':');
  Serial.println(time.second(), DEC);
}

void LCDTime(DateTime now){
  lcd.setCursor(5,1);
  lcd.print(now.hour());
  lcd.print(':');
  lcd.print(now.minute());
}