const int ledPins[] = {2, 4, 16, 17, 5};
const int switchPins[] = {12, 13, 14};

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  for (int i = 0; i < 5; i++) {

    pinMode(ledPins[i], OUTPUT);
  }

  for (int i = 0; i < 3; i++) {

    pinMode(switchPins[i], INPUT_PULLUP);
  }

}

void loop() {
  // put your main code here, to run repeatedly:

   if (digitalRead(switchPins[0]) == LOW) //mode 1
  {
     Serial.println("MODE 1");
    for(int i = 0 ; i < 5 ; i++)
    {
      digitalWrite(ledPins[i], HIGH);
    }
  }
  else if (digitalRead(switchPins[1]) == LOW) //mode 2
  {
     Serial.println("MODE 2");
    for(int i = 0 ; i < 5 ; i++)
    {
      digitalWrite(ledPins[i], LOW);
    }
  }
  else if(digitalRead(switchPins[2]) == LOW)   //Mode 3
  {
    bool checkPress = true;

    while(checkPress)
    {
      for(int i = 0 ; i < 5 ; i++)
      {
         Serial.println("MODE 3");
        digitalWrite(ledPins[i], HIGH);
        delay(100); 
        digitalWrite(ledPins[i],LOW); 

        if(digitalRead(switchPins[0]) == LOW || digitalRead(switchPins[1]) == LOW)
        {
          checkPress = false;
          break;
        }
      }

      for(int i = 4 ; i > 0 ; i--)
      {
        digitalWrite(ledPins[i], HIGH);
        delay(100); 
        digitalWrite(ledPins[i],LOW);

        if(digitalRead(switchPins[0]) == LOW || digitalRead(switchPins[1]) == LOW)
        {
          checkPress = false;
          break;
        }
      }
    }
  }

}