#include <FastLED.h>

#define NUM_LEDS 12 // Change this to the number of LEDs in your strip
#define DATA_PIN 2 // Change this to your data pin

CRGB leds[NUM_LEDS];

void setup() {
  FastLED.addLeds<WS2812, DATA_PIN, GRB>(leds, NUM_LEDS); // Change WS2812 to your LED type if necessary
}

void loop() {
  fadeToSunset(15000); // Fade over 15 seconds
}

void fadeToSunset(unsigned long duration) {
  unsigned long startTime = millis();
  unsigned long endTime = startTime + duration;

  while (millis() < endTime) {
    // Calculate the current time and progress
    unsigned long currentTime = millis();
    float progress = (float)(currentTime - startTime) / duration;

    // Calculate the brightness level (from 255 to 0)
    uint8_t brightness = (1.0 - progress) * 255;

    // Calculate color transitions
    CRGB color;
    
    if (progress < 0.5) {
      // Transition from white (daylight) to orange
      float t = progress * 2; // Scale progress to [0, 1] for first half
      color = blend(CRGB::White, CRGB::Orange, t * 255);
    } else {
      // Transition from orange to blue (moonlight)
      float t = (progress - 0.5) * 2; // Scale progress to [0, 1] for second half
      color = blend(CRGB::Orange, CRGB::Blue, t * 255);
    }

    // Set the color and brightness to the LEDs
    fill_solid(leds, NUM_LEDS, color);
    fadeToBlackBy(leds, NUM_LEDS, 255 - brightness); // Adjust brightness
    FastLED.show();
    
    delay(10); // Short delay for smooth transition
  }

  // Turn off all LEDs after the fade
  fill_solid(leds, NUM_LEDS, CRGB::Black);
  FastLED.show();
  delay(1000); // Wait for a second before restarting
}