const int relayPins[] = {12, 13, 14, 27};
const int buttonPins[] = {16, 17, 18, 19};
const int pirPins[] = {32, 33, 25, 26};

bool relayStates[] = {false, false, false, false};
bool lastButtonStates[] = {LOW, LOW, LOW, LOW};

void setup() {
  for (int i = 0; i < 4; i++) {
    pinMode(relayPins[i], OUTPUT);
    pinMode(buttonPins[i], INPUT_PULLDOWN);
    pinMode(pirPins[i], INPUT);
    digitalWrite(relayPins[i], LOW);
  }
}

void loop() {
  for (int i = 0; i < 4; i++) {
    handleButton(buttonPins[i], relayPins[i], relayStates[i], lastButtonStates[i]);
    handlePIR(pirPins[i], relayPins[i], relayStates[i]);
  }
}

void handleButton(int buttonPin, int relayPin, bool &relayState, bool &lastButtonState) {
  bool buttonState = digitalRead(buttonPin);

  // Toggle relay state on button press
  if (buttonState && !lastButtonState) {
    relayState = !relayState;
    digitalWrite(relayPin, relayState ? HIGH : LOW);
  }

  lastButtonState = buttonState;
}

void handlePIR(int pirPin, int relayPin, bool &relayState) {
  if (digitalRead(pirPin) == HIGH) {
    relayState = true;
    digitalWrite(relayPin, HIGH);
  } else if (!relayState) {
    // Only turn off the relay if it wasn't turned on by the button
    digitalWrite(relayPin, LOW);
  }
}