// fully bright 8-15 LDR value
// partial between 15 to 1000 LDR value
// dark above 1000 LDR value

// fully bright 41687 to 100000 lux value
// partial between 0.5 to 36308 lux value
// dark 0.1 to 0.4 lux value

const int ldrPin = A0;     // LDR connected to analog pin A0
const int led1Pin = 13;     // LED1 connected to digital pin `13 (for bright light)
const int led2Pin = 12;     // LED2 connected to digital pin 12 (for partial light)
const int led3Pin = 11;    // LED3 connected to digital pin 11 (for dark)

void setup() {
  pinMode(led1Pin, OUTPUT); // Set LED1 pin as output
  pinMode(led2Pin, OUTPUT); // Set LED2 pin as output
  pinMode(led3Pin, OUTPUT); // Set LED3 pin as output
  Serial.begin(9600);       // Initialize serial communication at 9600 baud
}

void loop() {
  int ldrValue = analogRead(ldrPin); // Read LDR value

  Serial.print("LDR Value: ");       // Print the text "LDR Value: "
  Serial.println(ldrValue);          // Print the LDR value
  
  // Logic to turn on one LED at a time based on LDR value
  if (ldrValue > 1000) { // It's dark
    digitalWrite(led1Pin, LOW);      // Turn off LED1
    digitalWrite(led2Pin, LOW);      // Turn off LED2
    digitalWrite(led3Pin, HIGH);     // Turn on LED3
  } else if (ldrValue > 15 && ldrValue <= 1000) { // It's partially bright
    digitalWrite(led1Pin, LOW);      // Turn off LED1
    digitalWrite(led2Pin, HIGH);     // Turn on LED2
    digitalWrite(led3Pin, LOW);      // Turn off LED3
  } else { // It's Fully bright
    digitalWrite(led1Pin, HIGH);     // Turn on LED1
    digitalWrite(led2Pin, LOW);      // Turn off LED2
    digitalWrite(led3Pin, LOW);      // Turn off LED3
  }

  delay(500);
}