#include <Adafruit_NeoPixel.h>

#define LED_PIN   16
#define LED_COUNT 16
#define BUTTON_PIN 5 // Pushbutton connected to pin 5
#define BUZZER_PIN 19 // Buzzer connected to pin 19

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

const int pins[] = {23, 22, 2, 15, 18, 21, 4};  // 7-segment display pins (A, B, C, D, E, F, G)
const int data[10][7] = {
  {0, 0, 0, 0, 0, 0, 1}, // 0
  {1, 0, 0, 1, 1, 1, 1}, // 1
  {0, 0, 1, 0, 0, 1, 0}, // 2
  {0, 0, 0, 0, 1, 1, 0}, // 3
  {1, 0, 0, 1, 1, 0, 0}, // 4
  {0, 1, 0, 0, 1, 0, 0}, // 5
  {0, 1, 0, 0, 0, 0, 0}, // 6
  {0, 0, 0, 1, 1, 1, 1}, // 7
  {0, 0, 0, 0, 0, 0, 0}, // 8
  {0, 0, 0, 0, 1, 0, 0}  // 9
};

const int switchPin = 14;  // Button pin
int currentValue = 0;
int direction = 1;         // 1 for up, -1 for down
int switchState;
int lastSwitchState = HIGH;



void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);  // Set button pin as input with pull-up resistor
  pinMode(BUZZER_PIN, OUTPUT);        // Set buzzer pin as output

  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  strip.begin();           // Initialize NeoPixel strip object (REQUIRED)
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(250); // Set brightness to about 1/5 (max = 255)

  for (int x = 0; x < 7; x++) {
    pinMode(pins[x], OUTPUT);
  }
  pinMode(switchPin, INPUT_PULLUP);

}

void loop() {
  if(digitalRead(BUTTON_PIN) == LOW) { // Button is pressed
    tone(BUZZER_PIN, 2300);  // Turn on buzzer with a 2300 Hz tone
    colorWipe(strip.Color(255, 0, 0), 20); // Red color for NeoPixel
    colorWipe(strip.Color(  0, 255,   0), 15); // Green
    colorWipe(strip.Color(  0,   0, 255), 00); // Blue
  }
  else { // Button is not pressed
    noTone(BUZZER_PIN); // Turn off the buzzer
    strip.clear();      // Turn off all NeoPixels
    strip.show();       // Update the strip to reflect changes
  }

  delay(10);  // Short delay for debounce

   switchState = digitalRead(switchPin);

  if (switchState == LOW && lastSwitchState == HIGH) { // Detect button press
    currentValue += direction;

    // Change direction at boundaries (0 and 9)
    if (currentValue == 9) {
      direction = -1;
    } else if (currentValue == 0) {
      direction = 1;
    }

    Serial.println(currentValue);
    delay(150);  // Debounce delay
  }

  // Update the 7-segment display
  for (int x = 0; x < 7; x++) {
    digitalWrite(pins[x], data[currentValue][x]);
  }

  lastSwitchState = switchState;
}

void colorWipe(uint32_t color, int wait) {
  for (int i = 0; i < strip.numPixels(); i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         // Set pixel's color (in RAM)
    strip.show();                          // Update strip to match
    delay(wait);                           // Pause for a moment
  }
}


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