#include <FastLED.h>

#define NUM_LEDS  56
#define LED_PIN   2

CRGBArray<NUM_LEDS> leds;

uint8_t patternCounter = 0;

//wipe pattern colors
CRGB bgColor = CRGB(0,0,0);
CRGB wipeColor = CRGB(0,0,255);
CRGB fgColor = wipeColor;
uint16_t wipeStepTime = 20;
uint8_t wipeStart;     // wipe start pixel position
uint8_t wipeEnd;       // wipe end pixel position

void setup() {
  FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(150);
  Serial.begin(57600);
}

void loop() {

  switch (patternCounter) {
    case 0:
      allBlank();
      break;
    case 1:
      sakura( leds);
      break;
    case 2:
      fillBlue();
      break;
  }

  EVERY_N_SECONDS(5) {
    nextPattern();
  }

  FastLED.show();
}

void nextPattern() {
  patternCounter = (patternCounter + 1) % 3;  // Change the number after the % to the number of patterns you have
}

void fillBlue() {

  EVERY_N_MILLISECONDS(wipeStepTime) {
    fill_solid(leds, NUM_LEDS, bgColor);

    if (wipeEnd < NUM_LEDS-1) {
      wipeEnd++;
      fgColor = wipeColor;
    }
    else if (wipeStart < NUM_LEDS-1) {
      wipeStart++;
    }
    else if (fgColor == bgColor) {
      wipeStart = 0;  // reset wipe
      wipeEnd = 0;
      fgColor = wipeColor;
    }
    else if (wipeStart == NUM_LEDS-1 && wipeEnd == NUM_LEDS-1) {
      fgColor = bgColor;
    }

    fill_gradient_RGB (leds, wipeStart, fgColor, wipeEnd, fgColor );

  FastLED.show();

}