// Define pin connections
#define BUTTON_PIN 12
#define LED_COUNT 10

// LED pins array
const int ledPins[LED_COUNT] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
// Variable to hold the current pattern
int currentPattern = 0;

void setup() {
    // Initialize LED pins as outputs
    for (int i = 0; i < LED_COUNT; i++) {
        pinMode(ledPins[i], OUTPUT);
        digitalWrite(ledPins[i], LOW);  // Turn off initially
    }
    
    // Initialize button pin
    pinMode(BUTTON_PIN, INPUT_PULLUP);
}

void loop() {
    // Check if the button is pressed
    if (digitalRead(BUTTON_PIN) == LOW) {
        delay(50);  // Simple debounce
        if (digitalRead(BUTTON_PIN) == LOW) {
            currentPattern = (currentPattern + 1) % 3;  // Cycle through patterns
            applyPattern(currentPattern);
            while (digitalRead(BUTTON_PIN) == LOW);  // Wait for button release
        }
    }
}

void applyPattern(int pattern) {
    // Clear all LEDs
    for (int i = 0; i < LED_COUNT; i++) {
        digitalWrite(ledPins[i], LOW);
    }

    // Apply the selected pattern based on button press
    switch (pattern) {
        case 0: // Pattern 1: First three LEDs on
            digitalWrite(ledPins[0], HIGH);
            digitalWrite(ledPins[1], HIGH);
            digitalWrite(ledPins[2], HIGH);
            break;
        case 1: // Pattern 2: Every second LED on
            for (int i = 0; i < LED_COUNT; i += 2) {
                digitalWrite(ledPins[i], HIGH);
            }
            break;
        case 2: // Pattern 3: All LEDs on
            for (int i = 0; i < LED_COUNT; i++) {
                digitalWrite(ledPins[i], HIGH);
            }
            break;
    }
}