#include <Adafruit_NeoPixel.h>
#include "GlowingPixels.cpp"

#define NUMPIXELS 12
#define CHANGE_DELAY 16

const uint32_t RED = Adafruit_NeoPixel::Color(255, 0, 0);
const uint32_t GREEN = Adafruit_NeoPixel::Color(0, 255, 0);
const uint32_t BLUE = Adafruit_NeoPixel::Color(0, 0, 255);

struct pin_mapping {
  int button;
  int neo;
  uint32_t colour;
};

const pin_mapping pinMapping[] = {
  {12, 25, RED},
  {11, 27, BLUE},
  {10, 29, GREEN},
  {9,  31, RED}
};

const int connectionNum = sizeof(pinMapping)/sizeof(*pinMapping);

struct pixel_connection {
  GlowingPixels pixel;
  int buttonPin;
} pixels[connectionNum];

void update() {
  for (int i = 0; i < connectionNum; i++) {
    int buttonPressed = digitalRead(pixels[i].buttonPin);
    if (buttonPressed == LOW) {
      pixels[i].pixel.update();
    }
  }
}

void draw() {
  for (int i = 0; i < connectionNum; i++) {
    int buttonPressed = digitalRead(pixels[i].buttonPin);
    if (buttonPressed == LOW) {
      pixels[i].pixel.draw();
    } else {
      pixels[i].pixel.clear();
    }
  }
}

void setup() {
  Serial.begin(115200);
  for (int i = 0; i < connectionNum; i++) {
    pixels[i].pixel = GlowingPixels(pinMapping[i].neo, pinMapping[i].colour);
    pixels[i].buttonPin = pinMapping[i].button;

    pixels[i].pixel.begin();
    pinMode(pixels[i].buttonPin, INPUT_PULLUP);
  }
}

void loop() {
  update();
  draw();
  
  delay(CHANGE_DELAY);
}