int button = 4;
int ledPin = 5;

int state;
long startTime;
long currentTime;
long holdTime;
int brightness;
int fadeAmount = 10;

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(button, INPUT_PULLUP);
pinMode(ledPin, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
state = digitalRead(button);
if(digitalRead(button) == LOW){
  startTime = millis();
  while(digitalRead(button == LOW)){
    currentTime = millis();
    holdTime = currentTime - startTime;
  }
}
if(holdTime > 1000 && holdTime < 3000){
  analogWrite(ledPin, brightness);


  brightness = brightness + fadeAmount;


  if (brightness <= 0 || brightness >= 255) {
    fadeAmount = -fadeAmount;
  }

  delay(30);
}
if(holdTime < 500){
  digitalWrite(ledPin, HIGH);
}

if(holdTime > 3000){
  digitalWrite(ledPin, LOW);
}
Serial.println(state);
delay(10);
}