#include <FastLED.h>

FASTLED_USING_NAMESPACE
#define LED_1_PIN     2

#define NUM_STRIPS 1
#define NUM_LEDS_PER_STRIP 50
#define LED_TYPE    WS2811
#define COLOR_ORDER BRG
#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
#define UPDATES_PER_SECOND 80
#define MAX_BLEND 15 //
#define DURATION_SECS 6 * 60 * 60
CRGB leds[NUM_STRIPS][NUM_LEDS_PER_STRIP];
CRGBPalette16 currentLed1Palette;
CRGBPalette16 nextLed1Palette;
uint8_t gCurrentPaletteNumber = 0; // Index number of which pattern is current
uint8_t paletteIndex = 0;
uint8_t brightness;

DEFINE_GRADIENT_PALETTE( black_green_pink ) {
  0,     0,  0,  0,   //black
128,   42,  136,  128,   //wierd green
255,   254 ,0,  255,   // pink
};

DEFINE_GRADIENT_PALETTE( black_purple_pink ) {
  0,     0,  0,  0,   //black
128,   42,  45,  136,   //purple
255,   254 ,0,  255,   // pink
};

void setup() {
  // put your setup code here, to run once:
  brightness = 255;
  FastLED.addLeds<LED_TYPE, LED_1_PIN, COLOR_ORDER>(leds[0], NUM_LEDS_PER_STRIP).setCorrection( TypicalLEDStrip );
  FastLED.setBrightness(  brightness );
  nextPalette();
  Serial.begin(9600);
}

CRGBPalette16 led1PalettesNew[] = {black_green_pink, black_purple_pink};


void loop() {
  // put your main code here, to run repeatedly:
  
  //EVERY_N_MILLISECONDS( 10 ) { paletteIndex++;} // moves the palette along the strip
  EVERY_N_SECONDS( 20 ) { nextPalette(); } // change palette periodically
  fillLEDsFromPaletteColors();
  FastLED.show();
  FastLED.delay(1000 / UPDATES_PER_SECOND);

}

void nextPalette()
{
  currentLed1Palette = led1PalettesNew[gCurrentPaletteNumber  % ARRAY_SIZE( led1PalettesNew )];
  gCurrentPaletteNumber++;
  nextLed1Palette = led1PalettesNew[gCurrentPaletteNumber  % ARRAY_SIZE( led1PalettesNew )];
}

// --------
// Patterns
// --------
void fillLEDsFromPaletteColors()
{
  uint8_t sinBeat1 = beatsin8(10, 20, 255, 0, 0);
  uint8_t sinBeat2 = beatsin8(5, 20, 255, 1000, 0);
  
  fill_palette(leds[0], NUM_LEDS_PER_STRIP, paletteIndex, 255/NUM_LEDS_PER_STRIP, currentLed1Palette, (sinBeat1+sinBeat2)/2, LINEARBLEND);
  nblendPaletteTowardPalette(currentLed1Palette, nextLed1Palette, MAX_BLEND);
}