#include <FastLED.h>
#define NUM_LEDS 30//to see
#define DATA_PIN 2 //How boring and obvious!
#define COLOR_ORDER GRB //Green (G), Red (R), Blue (B)
#define CHIPSET WS2812B
#define BRIGHTNESS 60
#define VOLTS 5
#define MAX_AMPS 500 //value in milliamps
#define DELAY 5
#define FLASH_COLOR CRGB::White
#define HEX "0x00FFBA"



CRGB leds[NUM_LEDS];
char recvBuff[80];
int charCount = 0;
bool recvDone = false;

void setup() {
  // put your setup code here, to run once:
  //serial setup:
  Serial.begin(9600);
  //LED setup
  FastLED.addLeds<CHIPSET, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.setMaxPowerInVoltsAndMilliamps(VOLTS, MAX_AMPS);
  FastLED.setBrightness(BRIGHTNESS);
  FastLED.clear();
  FastLED.show();
  Serial.println("Ready");
}


void loop() {


  if (Serial.available())
  {


    while (Serial.available())
    {
      char incomingChar = Serial.read();
      if (incomingChar != 10  && incomingChar != 13)
      {
        recvBuff[charCount] = incomingChar;
        charCount++;
      } else if (incomingChar == 10) {
        recvDone = true;
      }
    }


  }

  if (charCount > 0 && recvDone)
  {
    char   input = recvBuff[0];
    Serial.println(recvBuff);
    Serial.print(":");  // show what was received
    Serial.print(input);
    Serial.print(": ");
    if (input == 'a') {
      int middleIndex = {NUM_LEDS / 2 - 1};
      for (int i = 0; i <= (middleIndex + 1); i++) {
        int forwardIndex = {middleIndex + i};
        int backwardIndex = {middleIndex - i};
        leds[forwardIndex - 3] = CRGB::Black;
        leds[backwardIndex + 3] = CRGB::Black;
        leds[forwardIndex] = FLASH_COLOR;
        leds[backwardIndex] = FLASH_COLOR;
        FastLED.show();
        delay(10);
      }
    }
    FastLED.clear();
    FastLED.show();
    if (input == 'r') {
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = CRGB::Red;
      }
    }
    FastLED.show();

    if (input == 'g') {
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = CRGB::Green;
      }
    }
    FastLED.show();

    if (input == 'b') {
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = CRGB::Blue;
      }
    }
    // This is where i have a problem.
    FastLED.show();

    if (input == 't') {
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = HEX;
      }
    }
    FastLED.show();

    if (input == '0') {
      for (int i = 0; i < NUM_LEDS; i++) {
        leds[i] = recvBuff;
      }
    }
    FastLED.show();
    //reset counter and bool var
    charCount = 0;
    recvDone = false;


  }



}