#include <Adafruit_NeoPixel.h>

#define PIN_LED 13
#define NUM_LEDS 12

#define BTN_MODE 14
#define BTN_LUXE_UP 27
#define BTN_LUXE_DOWN 26
#define BTN_ON_OFF 25

Adafruit_NeoPixel strip(NUM_LEDS, PIN_LED, NEO_GRB + NEO_KHZ800);

// Төлөв хадгалах хувьсагчууд
uint8_t brightness = 128;      // 0 - 255
uint8_t mode = 0;
bool isOn = true;

void setup() {
  Serial.begin(115200);
  strip.begin();
  strip.setBrightness(brightness);
  strip.show();

  pinMode(BTN_MODE, INPUT_PULLUP);
  pinMode(BTN_LUXE_UP, INPUT_PULLUP);
  pinMode(BTN_LUXE_DOWN, INPUT_PULLUP);
  pinMode(BTN_ON_OFF, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(BTN_MODE) == LOW) {
    delay(200);  // debounce
    mode = (mode + 1) % 5;
    Serial.println("Mode changed");
  }

  if (digitalRead(BTN_LUXE_UP) == LOW) {
    delay(200);
    brightness = min(255, brightness + 25);
    strip.setBrightness(brightness);
    Serial.println("Brightness up");
  }

  if (digitalRead(BTN_LUXE_DOWN) == LOW) {
    delay(200);
    brightness = max(0, brightness - 25);
    strip.setBrightness(brightness);
    Serial.println("Brightness down");
  }

  if (digitalRead(BTN_ON_OFF) == LOW) {
    delay(200);
    isOn = !isOn;
    Serial.println(isOn ? "LED ON" : "LED OFF");
  }

  if (isOn) {
    showColorMode(mode);
  } else {
    strip.clear();
    strip.show();
  }

  delay(100);
}

void showColorMode(int mode) {
  uint32_t color;
  switch (mode) {
    case 0: color = strip.Color(255, 0, 0); break; // Red
    case 1: color = strip.Color(0, 255, 0); break; // Green
    case 2: color = strip.Color(0, 0, 255); break; // Blue
    case 3: color = strip.Color(255, 255, 0); break; // Yellow
    case 4: color = strip.Color(255, 0, 255); break; // Purple
  }

  for (int i = 0; i < NUM_LEDS; i++) {
    strip.setPixelColor(i, color);
  }
  strip.show();
}