#define LDRPin 34
#define led1Pin 16
#define led2Pin 17
#define led3Pin 18
#define led4Pin 19

void display(int,int,int,int);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(led3Pin, OUTPUT);
  pinMode(led4Pin, OUTPUT);
}

void loop() {

  int analogValue = analogRead(LDRPin);

  Serial.print("Analog Value = ");
  Serial.print(analogValue);  


  if (analogValue < 40) {
    Serial.println(" => Dark");
    display(HIGH,LOW,LOW,LOW);
  } else if (analogValue < 2000) {
    Serial.println(" => Dim");
    display(HIGH,HIGH,LOW,LOW);
  } else if (analogValue < 2500) {
    Serial.println(" => Light");
  } else if (analogValue < 4000) {
    display(HIGH,HIGH,HIGH,LOW);
    Serial.println(" => Bright");
  } else {
    Serial.println(" => Very bright");
    display(HIGH,HIGH,HIGH,HIGH);
  }

  delay(500);

}

void display(int status1,int status2,int status3,int status4){
  digitalWrite(led1Pin,status1);
  digitalWrite(led2Pin,status2);
  digitalWrite(led3Pin,status3);
  digitalWrite(led4Pin,status4);
  delay(1000);
}