#include <NeoPixelBus.h>

#define pixelCount 20
#define colorSaturation 255

using NPB = NeoPixelBus<NeoGrbFeature, NeoEsp8266BitBang400KbpsMethod>;

NPB strip(pixelCount, D1);
RgbColor red(colorSaturation, 0, 0);
RgbColor green(0, colorSaturation, 0);
RgbColor blue(0, 0, colorSaturation);
RgbColor white(colorSaturation);
RgbColor black(0);

RgbColor coral(255, 127, 80);
RgbColor tomato(255, 99, 71);
RgbColor orangered(255, 69, 0);
RgbColor gold(255, 215, 0);
RgbColor orange(255, 165, 0);
RgbColor darkorange(255, 140, 0);

RgbColor colors[] = {red, green, blue, white, black, coral, tomato, orangered, gold, orange, darkorange};

template<typename T, int size>
constexpr int dim(T(&)[size]) {
  return size;
}

void setup() {
  Serial.begin(115200);
  delay(100);

  Serial.println();
  Serial.println();
  Serial.println();
  Serial.println();
  Serial.println("Hello world!");

  strip.Begin();

  analogWriteFreq(200);

  Serial.println("setup() done");
}

void loop() {
  for (int i = 0; i < dim(colors); i++) {
    auto c = colors[i];
    setColor(c);

    Serial.printf("r: %d, g: %d, b: %d\n", c.R, c.G, c.B);
    Serial.println();
    delay(300);
  }
}

void setColor(RgbColor color) {
  int i;
  for (i = 0; i < strip.PixelCount(); i++) {
    strip.SetPixelColor(i, color);
  }
  strip.Show();
}