#define BUTTON_PIN 27  
#define LED_1 0  
#define LED_2 1
#define LED_3 26 

void setup() {
  pinMode(LED_1, OUTPUT);
  pinMode(LED_2, OUTPUT);
  pinMode(LED_3, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  Serial.begin(9600);
  delay(2000);
  Serial.println("This is LED button example for FAB ACADEMY 2024");
}

void loop() { 
  
  int buttonState = digitalRead(BUTTON_PIN);
  if (buttonState == HIGH) {    
    if ((digitalRead(LED_1) == HIGH) && (digitalRead(LED_2) == HIGH) && (digitalRead(LED_2) == HIGH)) { 
      digitalWrite(LED_1, LOW);
      digitalWrite(LED_2, LOW);
      digitalWrite(LED_3, LOW);
      Serial.println("LEDs OFF");
    }
    else {
      digitalWrite(LED_1, HIGH);
      digitalWrite(LED_2, HIGH);
      digitalWrite(LED_3, HIGH);
      Serial.println("LEDs ON");
    } 
    while(digitalRead(BUTTON_PIN) == HIGH); 
    delay(50); 
  } 
}