// Pin Definitions
const int relayPin = 8;      // Relay control pin
const int buttonPin = 2;     // Push button pin
const int ledStatePin = 13;  // Optional: LED to show relay state

// Variables to hold the button state and the relay state
int buttonState = 0;
int relayState = LOW;

void setup() {
  // Set relay and button pin modes
  pinMode(relayPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);  // Enable internal pull-up resistor
  pinMode(ledStatePin, OUTPUT);      // Optional LED for visual relay state feedback

  // Start serial for debugging
  Serial.begin(9600);
  
  // Start with the relay off
  digitalWrite(relayPin, LOW);
}

void loop() {
  // Read the state of the button
  buttonState = digitalRead(buttonPin);

  // Print button state to serial monitor
  //Serial.print("Button State: ");
  //Serial.println(buttonState);
  
  // If button is pressed (active low logic)
  if (buttonState == HIGH) {
    // Toggle the relay state
    relayState = !relayState;
    digitalWrite(relayPin, LOW);
    digitalWrite(relayPin, relayState);
    delay(1000);

    // Optional: turn on/off an LED for visual feedback
    digitalWrite(ledStatePin, relayState);

    // Wait for a while to debounce the button
    delay(200);
  }
  
}