// Define pin
const int relayPin = 3;
const int relayNotif = 2;

const int ledPin = 13;
const int relayPinout = 8;
const int relayNotifOut = 7;

int previousRelayStatus = LOW;
bool isConsistent = false;
int currentRelayStatus = LOW;

unsigned long relayOnTime = 0;
unsigned long relayOffTime = 0;

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(relayPin, INPUT);
  pinMode(relayNotif, INPUT);
  pinMode(relayNotifOut, OUTPUT);
  pinMode(relayPinout, OUTPUT);
}

// Pull Down Mode
void loop() {
  currentRelayStatus = digitalRead(relayPin);
  unsigned long currentMillis = millis();

  // Debug pinout relay input
  Serial.print("Relay pin nilai:");
  Serial.println(currentRelayStatus);
  Serial.print("Relay pin nilai sebelum:");
  Serial.println(previousRelayStatus);
  Serial.print("isConsistent nilai:");
  Serial.println(isConsistent);
  Serial.print("R out nilai:");
  Serial.println(relayPinout);

  if (currentRelayStatus != previousRelayStatus)
  {
    previousRelayStatus = currentRelayStatus;
    if (currentRelayStatus == HIGH) {
      relayOnTime = currentMillis;
      isConsistent = true; 
    } else {
      relayOffTime = currentMillis;
      isConsistent = false;
    }
  }

  if (isConsistent && currentRelayStatus == HIGH) {
    if (currentMillis - relayOnTime >= 15000) { 
      Serial.println("Relay nyala selama 15 detik");
      digitalWrite(ledPin, LOW);
      digitalWrite(relayPinout, LOW);
      Serial.print("Air Penuh");
      isConsistent = false;
    }
  }

  if (isConsistent == false && currentRelayStatus == LOW) {
    if (millis() - relayOffTime >= 5000) {
      Serial.println("Relay mati selama 5 detik");
      digitalWrite(ledPin, HIGH);
      digitalWrite(relayPinout, HIGH);
      Serial.print("Mengisi Air...");
      isConsistent = true;
    }
  }
  delay(2000);
}