// Define pin assignments for individual LEDs
const int led1Pin = 2;
const int led2Pin = 3;
const int led3Pin = 4;

// Define pin assignments for bar graph segments
const int bargraphPins[] = {5, 6, 7, 8, 9, 10, 11, 12, 13, 44};
const int numSegments = 10;

void setup() {
  // Initialize individual LED pins as outputs
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(led3Pin, OUTPUT);
  
  // Initialize bar graph pins as outputs
  for (int i = 0; i < numSegments; i++) {
    pinMode(bargraphPins[i], OUTPUT);
  }
  
  // Ensure all LEDs and bar graph segments are off at start (initialization rule)
  turnOffAllLEDs();
  turnOffAllBarGraphSegments();
}

void loop() {
  // Phase 1: LED1 on, bar graph shows 1 segment
  turnOffAllLEDs();
  digitalWrite(led1Pin, HIGH);
  updateBarGraph(1);
  delay(2000);
  
  // Phase 2: LED2 on, bar graph shows 2 segments
  turnOffAllLEDs();
  digitalWrite(led2Pin, HIGH);
  updateBarGraph(2);
  delay(2000);
  
  // Phase 3: LED3 on, bar graph shows 3 segments
  turnOffAllLEDs();
  digitalWrite(led3Pin, HIGH);
  updateBarGraph(3);
  delay(2000);
  
  // Final Phase: All LEDs off, bar graph shows all 10 segments
  turnOffAllLEDs();
  updateBarGraph(10);
  delay(2000);
}

// Function to update the bar graph display
void updateBarGraph(int activeSegments) {
  // First turn off all segments
  turnOffAllBarGraphSegments();
  
  // Then turn on the required number of segments
  for (int i = 0; i < activeSegments && i < numSegments; i++) {
    digitalWrite(bargraphPins[i], HIGH);
  }
}

// Function to turn off all individual LEDs
void turnOffAllLEDs() {
  digitalWrite(led1Pin, LOW);
  digitalWrite(led2Pin, LOW);
  digitalWrite(led3Pin, LOW);
}

// Function to turn off all bar graph segments
void turnOffAllBarGraphSegments() {
  for (int i = 0; i < numSegments; i++) {
    digitalWrite(bargraphPins[i], LOW);
  }
}