class Led {
  private:
    byte pin;
  public:
    Led(byte pin) {
      this->pin = pin;
      init();
    }

    void init() {
      pinMode(pin, OUTPUT);
      off();
    }

    void on() {
      digitalWrite(pin, HIGH);
    }

    void off() {
      digitalWrite(pin, LOW);
    }
}; 

class Button {
  private:
    byte pin;
    byte state;
    byte lastReading;
    unsigned long lastDebounceTime = 0;
    unsigned long debounceDelay = 50;
  public:
    Button(byte pin) {
      this->pin = pin;
      lastReading = LOW;
      init();
    }
    void init() {
      pinMode(pin, INPUT);
      update();
    }
    void update() {
      byte newReading = digitalRead(pin);
      
      if (newReading != lastReading) {
        lastDebounceTime = millis();
      }
      if (millis() - lastDebounceTime > debounceDelay) {
        state = newReading;
      }
      lastReading = newReading;
    }
    byte getState() {
      update();
      return state;
    }
    bool isPressed() {
      return (getState() == HIGH);
    }
};

#define LED1 12
#define LED2 13
#define LED3 11
#define LED4 10
#define BUTTON_PIN 7

Led led1(LED1);
Led led2(LED2);
Led led3(LED3);
Led led4(LED4);
Button button1(BUTTON_PIN);

void setup() {
 
 pinMode(LED1, OUTPUT);
 pinMode(LED2, OUTPUT);
 pinMode(LED3, OUTPUT);
 pinMode(LED4, OUTPUT);
}
void loop() {
  if (button1.isPressed()) {
  led1.on();
  led2.on();
  led3.on();
  led4.on();
  }else{
  led1.off();
  led2.off();
  led3.off();
  led4.off();
  }
}