#define irpin 2
#define pirpin 8
#define relaypin 4

boolean irValue = LOW;
boolean pirValue = LOW;
boolean ispersonnear = LOW;
boolean isoccupied = LOW;
 
 
void setup() {
  Serial.begin(9600);
 
  pinMode(irpin, INPUT);
  pinMode(pirpin, INPUT);
  pinMode(relaypin, OUTPUT);

  digitalWrite(pirpin, LOW);
  digitalWrite(relaypin, HIGH);
}
 
void loop() {
  irValue = digitalRead(irpin);
  pirValue = digitalRead(pirpin);

  if (pirValue == HIGH) {
    Serial.println("PIR Motion Detected");
    ispersonnear = HIGH;
  } 
  if (!irValue == HIGH) {
    Serial.println("IR Detected ");
    isoccupied = HIGH;
  }
  else{
    isoccupied = LOW;
  } 
  if(ispersonnear == HIGH && isoccupied == HIGH){
    Serial.println("The Toilet is occupied");
  }

  if(isoccupied == LOW){
    if(ispersonnear == HIGH){
      Serial.println("Start Sanitization");
      sanitize();
      ispersonnear = LOW;
      
    }
  }

}

void sanitize(){
  digitalWrite(relaypin, LOW);
  delay(1000);
  digitalWrite(relaypin, HIGH);
}