// Pin configuration
const int ldrPin = 13;  // Pin for LDR
const int ledPins[] = {32, 33, 25, 26, 27};  // Pins for 5 LEDs
const int buttonIncrease = 19;  // Pin for push button 1 (increase threshold)
const int buttonDecrease = 18;  // Pin for push button 2 (decrease threshold)

int ledIndex = 0;  // Index for current LED
int lightThreshold = 800;  // Initial light threshold

void setup() {
  Serial.begin(115200);

  // Initialize LED pins as output
  for (int i = 0; i < 5; i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);  // Start with all LEDs off
  }
  
  // Initialize LDR pin as input
  pinMode(ldrPin, INPUT);

  // Initialize push button pins as input without pull-up
  pinMode(buttonIncrease, INPUT);  // Button for increasing threshold
  pinMode(buttonDecrease, INPUT);  // Button for decreasing threshold
}

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

  // Check push buttons
  adjustThreshold();

  Serial.print("LDR Value: ");
  Serial.println(ldrValue);  // For debugging, see the LDR value in Serial Monitor
  Serial.print("Current Threshold: ");
  Serial.println(lightThreshold);

  // Check if the LDR detects light
  if (ldrValue > lightThreshold && ledIndex < 5) {
    digitalWrite(ledPins[ledIndex], HIGH);  // Turn on the current LED
    ledIndex++;  // Move to the next LED
    delay(300);  // Small delay to debounce the light detection
  }

  // If all 5 LEDs are on, start blinking process
  if (ledIndex == 5) {
    for (int i = 0; i < 5; i++) {
      blinkAllLeds();  // Blink all LEDs 5 times
    }

    // Reset LEDs and index after blinking
    for (int i = 0; i < 5; i++) {
      digitalWrite(ledPins[i], LOW);
    }
    ledIndex = 0;  // Reset index for the next cycle
  }
}

// Function to blink all LEDs 1 time
void blinkAllLeds() {
  for (int i = 0; i < 5; i++) {
    digitalWrite(ledPins[i], LOW);
  }
  delay(200);

  for (int i = 0; i < 5; i++) {
    digitalWrite(ledPins[i], HIGH);
  }
  delay(200);
}

// Function to adjust the threshold using buttons
void adjustThreshold() {
  // Check if the increase button is pressed
  if (digitalRead(buttonIncrease) == 1) {  // HIGH indicates button press
    lightThreshold += 100;  // Increase threshold
    delay(300);  // Debounce delay
  }

  // Check if the decrease button is pressed
  if (digitalRead(buttonDecrease) == 1) {  // HIGH indicates button press
    lightThreshold -= 100;  // Decrease threshold
    if (lightThreshold < 0) {
      lightThreshold = 0;  // Prevent threshold from going negative
    }
    delay(300);  // Debounce delay
  }
}