// Define the pins
const int buttonPin = 12;    // GPIO pin where the button is connected
const int relayPin = 14;     // GPIO pin where the relay is connected

// Variables will change:
int buttonState = 0;         // Variable for reading the pushbutton status
bool relayState = LOW;       // Variable to store the relay state

void setup() {
  // Initialize the relay pin as an output:
  pinMode(relayPin, OUTPUT);
  // Initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT_PULLUP); // Use internal pull-up resistor

  // Start with the relay off
  digitalWrite(relayPin, relayState);

  // Initialize serial communication:
  Serial.begin(115200);
}

void loop() {
  // Read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // Check if the pushbutton is pressed.
  // If it is, the buttonState is LOW:
  if (buttonState == LOW) {
    // Invert the relay state
    relayState = !relayState;
    // Update the relay state
    digitalWrite(relayPin, relayState);

    // Print the state to the serial monitor
    if (relayState == HIGH) {
      Serial.println("Relay is ON");
    } else {
      Serial.println("Relay is OFF");
    }

    // Wait for the button to be released
    while (digitalRead(buttonPin) == LOW) {
      delay(10);
    }
  }

  // Small delay to avoid bouncing issues
  delay(50);
}