#include <Adafruit_NeoPixel.h>
#include "ColorConstants.h"

#define PIN 6
#define NUMPIXELS 60
#define NUMBERGROUPS 15

Adafruit_NeoPixel neoPixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);  // Declare our NeoPixel strip object
uint32_t pixels[NUMPIXELS];

unsigned long startTime;
unsigned long intervalTime = 250;

const uint32_t colors[] = { ccRGB(255, 0, 0), ccRGB(255, 255, 255)};
const uint8_t NUMBERCOLORS = sizeof(colors) / sizeof(uint32_t);

unsigned long targetColor;
uint8_t colorIndex;
uint8_t position;

void setup() {
  Serial.begin(115200);
  neoPixels.begin();
  neoPixels.clear();
  SetPixels(ccWHITE, true);
  colorIndex = 0;
}

void loop() {
  IntervalUpdate();
}

void IntervalUpdate() {
  unsigned long currentTime = millis();
  unsigned long elapsedTime = currentTime - startTime;
  if (elapsedTime < intervalTime) return;
  startTime = currentTime;
  targetColor = colors[colorIndex];
  position = SetPixels(targetColor, position, NUMBERGROUPS, true);
}

void ShiftPixels(uint32_t color) {
  uint8_t index = NUMPIXELS - 1;
  while (index > 0) {
    pixels[index] = pixels[index - 1];
    neoPixels.setPixelColor(index, pixels[index]);
    index--;
  };
  pixels[0] = color;
  neoPixels.setPixelColor(0, color);
  neoPixels.show();
}

uint8_t SetPixels(uint32_t color, uint8_t start, uint8_t count, bool show) {
  uint8_t pIndex = start;
  for (uint8_t index = start; index < start + count ; index++) {
    neoPixels.setPixelColor(pIndex, color);
    pixels[pIndex] = color;
    pIndex = (pIndex + 1) % NUMPIXELS;
  }
  if (show) neoPixels.show();
  return pIndex;
}

void SetPixels(uint32_t color, bool show) {
  for (uint8_t index = 0; index < NUMPIXELS ; index++) {
    neoPixels.setPixelColor(index, color);
    pixels[index] = color;
  }
  if (show) neoPixels.show();
}