#include <FastLED.h>
#define NUM_LEDS 15


#define LED_PIN 12      // port podłączenie ledów
#define DRLSignal 2    // port podłączenia światła do jazdy dziennej

#define NUM_LEDS 60  // ilość ledów

#define BlinkerLEDs NUM_LEDS / 2


int BlinkerSpeed = 8;       // prędkość kierunkowskazu
int BlinkerOffDelay = 250;  // opóźnienie kierunowskazu

int StartupSpeed = 15;  // prędkość animacji powitalnej DRL

int DRLDetect = 0;

int LeftSignalDetected = 1;

int DRLColour = 1;

int r, r_dim = 0;
int b, b_dim = 30;
int g, g_dim = 30;


CRGB leds[NUM_LEDS];

//*****************************************************

void setup() {
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
}

//********************************************************

void loop() {
  if (DRLDetect == 0) {
    if (digitalRead(DRLSignal) == 1) {
      DRLDetect = 1;
    }
  }

  if (DRLDetect == 2) {
    if (digitalRead(DRLSignal) == 0) {
      DRLDetect = 3;
    }
  }

  if (DRLDetect == 1) {
    DRL_ON();
    DRLDetect = 2;
  }

  if (DRLDetect == 3) {
    DRL_OFF();
    DRLDetect = 0;
  }
}

void DRL_ON() {
  for (int j = ((NUM_LEDS / 2) - 1); j >= 0; j--)  // start
  {
    leds[j] = CRGB(0, 30, 30);
    leds[j + 1] = CRGB(0, 0, 0);
    leds[(NUM_LEDS / 2 - 1) + ((NUM_LEDS / 2) - j)] = CRGB(0, 30, 30);
    leds[(NUM_LEDS / 2 - 1) + ((NUM_LEDS / 2) - j) - 1] = CRGB(0, 0, 0);
    FastLED.show();
    delay(StartupSpeed);
  }

  for (int i = 0; i < (NUM_LEDS / 2); i++)  // powrót
  {
    leds[i] = CRGB(0, 30, 30);
    leds[(NUM_LEDS - 1) - i] = CRGB(0, 30, 30);
    FastLED.show();
    delay(StartupSpeed);
  }


  for (int j = ((NUM_LEDS / 2) - 1); j >= 0; j--)  // rozjaśnienie
  {
    leds[j] = CRGB(255, 255, 255);
    leds[(NUM_LEDS / 2 - 1) + ((NUM_LEDS / 2) - j)] = CRGB(255, 255, 255);
    FastLED.show();
    delay(StartupSpeed);
  }
}


void DRL_OFF() {

  for (int j = 0; j <= ((NUM_LEDS / 2) - 1); j++) {
    leds[j] = CRGB(r, g, b);
    leds[j - 1] = CRGB(r_dim, g_dim, b_dim);
    leds[(NUM_LEDS - 1) - j] = CRGB(r, g, b);
    leds[(NUM_LEDS)-j] = CRGB(r_dim, g_dim, b_dim);
    FastLED.show();
    delay(StartupSpeed);
  }

  leds[((NUM_LEDS / 2) - 1)] = CRGB(r_dim, g_dim, b_dim);
  leds[((NUM_LEDS / 2) - 1) + 1] = CRGB(r_dim, g_dim, b_dim);
  FastLED.show();

  for (int j = ((NUM_LEDS / 2) - 1); j >= 0; j--) {
    leds[j] = CRGB(r_dim, g_dim, b_dim);
    leds[j + 1] = CRGB(0, 0, 0);
    leds[(NUM_LEDS / 2 - 1) + ((NUM_LEDS / 2) - j)] = CRGB(r_dim, g_dim, b_dim);
    leds[(NUM_LEDS / 2 - 1) + ((NUM_LEDS / 2) - j) - 1] = CRGB(0, 0, 0);
    FastLED.show();
    delay(StartupSpeed);
  }

  for (int j = 0; j <= ((NUM_LEDS / 2) - 1); j++) {
    leds[j] = CRGB(r_dim, g_dim, b_dim);
    leds[j - 1] = CRGB(0, 0, 0);
    leds[(NUM_LEDS - 1) - j] = CRGB(r_dim, g_dim, b_dim);
    leds[(NUM_LEDS)-j] = CRGB(0, 0, 0);
    FastLED.show();
    delay(StartupSpeed);
  }

  leds[(NUM_LEDS / 2) - 1] = CRGB(0, 0, 0);
  leds[NUM_LEDS / 2] = CRGB(0, 0, 0);
  FastLED.show();
}