//Modern turn lights v.6.1.0 with arduino or attiny85 and ws2812b - individual strips easy to embed -  tail, reverse, brake  and turn signal - by Fedaceag Ionut ( Youtube - Think small, build big! )
#include <FastLED.h>                        //FastLed library version 3.2.1 - https://github.com/FastLED/FastLED/wiki/Overview or http://fastled.io/ with NEOPIXEL or WS2812B
//#define NUM_STRIPS 1                        //number of led strips
#define NUM_LEDS_PER_STRIP 160               //number of leds per each strip
#define LED_PIN 2                           //LED Strip Signal Connection
CRGB leds[NUM_LEDS_PER_STRIP];

unsigned long turnColor = 0xff6a00;         //turn signal color
unsigned long startupcolordim = 0x5a0000;
unsigned long startupcolorbright = 0xff0000;
unsigned long black = 0x000000;
//input pins for arduino
const int buttonPinTS = 6;                 // turn signal pin for arduino
const int buttonPinTailLights = 3;         // night / tail lights for arduino
const int buttonPinBreak = 4;              // brake lights for arduino
const int buttonPinReverseLights = 5;      // reverse lights for arduino
const int buttonPinStartup = 9;

int Startup = 0;
int TailLights = 0;
int ReverseLights = 0;
int Break = 0;

int TailState = 0;
int stateTS = 0;
int stateTSRuns = 0;
int ReverseState = 0;
int BrakeState = 0;
int StartupState = 0;
int buttonStateTS = 0;
int buttonstartupstate = 0;

int maxBrtBreak = 254;                                         // maxim brightness Break lights - from 0 to 254
int maxBrtTailLights = 70;                                     // maxim brightness tail lights - from 0 to 254
int maxBrtReverseLights = 254;                                 // maxim brightness reverse lights - from 0 to 254
int tailLightModel[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160};    // model array for tail lights leds from 0 - 49 for 50 leds / strip
int reverseLightModel[] = {13,14,15,16,17,18,19,20,21,22};
int turnsignalmodel[] = {0,2,4,6,8,10,12,14};                                               // model array for reverse lights leds from 0 - 49 for 50 leds / strip

int delayTurnLedAnim = 1;                                      //delay of each led in turn light animation
int delayTurnLedOff = 70;                                     //delay from animation to black (is used twice)
int delayLedToDayLight = 500;                                  // delay from animation to day light on
int nrAnimAfterOff = 3;                                        // number of animations for a single impulse
int StartupSpeed = 6;

unsigned long currentMillis = 0;
unsigned long previousMillis = 0;


void setup()  {
  //Serial.begin(115200);
  pinMode(buttonPinTS, INPUT);
  pinMode(buttonPinBreak, INPUT);
  pinMode(buttonPinTailLights, INPUT);
  pinMode(buttonPinReverseLights, INPUT);
  pinMode(buttonPinStartup, INPUT);


    for (int i = 0; i < (NUM_LEDS_PER_STRIP/2); i++) {  //beggining of Startup Sweep loop


    leds[i] = startupcolordim;
    leds[i-1] = black;
    leds[(NUM_LEDS_PER_STRIP-1)-i] = startupcolordim;
    leds[(NUM_LEDS_PER_STRIP)-i] = black;
    FastLED.show();
    delay (StartupSpeed);
  }

  for (int j = ((NUM_LEDS_PER_STRIP/2)-1); j >= 0; j--)
  {
    leds[j] = startupcolordim;
    leds[(NUM_LEDS_PER_STRIP/2-1)+((NUM_LEDS_PER_STRIP/2)-j)] = startupcolordim;
    FastLED.show();
    delay (StartupSpeed);
  }

  for (int j = ((NUM_LEDS_PER_STRIP/2)-1); j >= 0; j--)
  {
    leds[j] = startupcolorbright;
    leds[(NUM_LEDS_PER_STRIP/2-1)+((NUM_LEDS_PER_STRIP)/2-j)] = startupcolorbright;
    FastLED.show();
    delay (StartupSpeed);
  }

  for (int j = 255; j >= 60; j--)
  {
    for (int i = 0; i < NUM_LEDS_PER_STRIP; i++)
    {
    leds[i] = CRGB(j, 0, 0);
    }
    FastLED.show();
    delay (5);
  }

  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS_PER_STRIP); //led strip front left for arduino
  //FastLED.addLeds<NEOPIXEL, 0>(leds[0], NUM_LEDS_PER_STRIP); //led strip front left for attiny85

  fill_solid(leds, NUM_LEDS_PER_STRIP, CRGB::Red); // some led strips are all on at power on, so let's power them off at boot
  FastLED.show();



}
void loop() {
    // read the input state
    buttonStateTS = digitalRead(buttonPinTS);

    if(buttonStateTS == HIGH){
      stateTS = 1;
    }

// turn signal function
if(stateTS != 0){

    for(int dot = NUM_LEDS_PER_STRIP/2; dot > 0; dot--) {

        leds[dot] = turnColor;

        //delay(delayTurnLedAnim);
        currentMillis = previousMillis = millis();
        while(previousMillis + delayTurnLedAnim >= currentMillis){
          stateTSRuns = 1;
          TailAndBrake();
          FastLED.show();
          currentMillis = millis();
        }

    }

    //delay(delayTurnLedOff);
    currentMillis = previousMillis = millis();
    while(previousMillis + delayTurnLedOff >= currentMillis){
      stateTSRuns = 1;
      TailAndBrake();
      FastLED.show();
      currentMillis = millis();
    }

    fill_solid(leds, NUM_LEDS_PER_STRIP, CRGB::Black);
    stateTSRuns = 1;
    TailAndBrake();
    FastLED.show();

    //delay(delayTurnLedOff);
    currentMillis = previousMillis = millis();
    while(previousMillis + delayTurnLedOff >= currentMillis){
      stateTSRuns = 1;
      TailAndBrake();
      FastLED.show();
      currentMillis = millis();
    }

    buttonStateTS = digitalRead(buttonPinTS);
    if(buttonStateTS == HIGH){
      stateTS = 1;
    }

    stateTS++;
    if(stateTS >= nrAnimAfterOff && buttonStateTS != HIGH){
      stateTS = 0;
      //delay(delayLedToDayLight);
      currentMillis = previousMillis = millis();
      while(previousMillis + delayLedToDayLight >= currentMillis){
        stateTSRuns = 1;
        TailAndBrake();
        FastLED.show();
        currentMillis = millis();
      }
    }

  }else{

    fill_solid(leds, NUM_LEDS_PER_STRIP, CRGB::Black);

    TailAndBrake();
    FastLED.show();
  }
}


//function for Brake lights, tail lights and reverse lights
void TailAndBrake(){

    Break = digitalRead(buttonPinBreak);
    TailLights = digitalRead(buttonPinTailLights);
    ReverseLights = digitalRead(buttonPinReverseLights);
    Startup = digitalRead(buttonPinStartup);

    if(TailLights == HIGH && Break == LOW && stateTSRuns == 0){

      for(int i = 0; i <= sizeof(tailLightModel) / sizeof(tailLightModel[0]); i++){
        leds[tailLightModel[i]]=CHSV(0,254,maxBrtTailLights);
      }

    }else if(Break == HIGH && stateTSRuns == 0){

      fill_solid( leds, NUM_LEDS_PER_STRIP, CHSV(0,255,maxBrtBreak));

    }else if(TailLights == HIGH && Break == LOW && stateTSRuns == 1){

      int nrLedsTail = NUM_LEDS_PER_STRIP / 4;
      for(int i = 0; i <= nrLedsTail; i++){
        leds[i]=CHSV(0,254,maxBrtTailLights);
      }

    }else if(Break == HIGH && stateTSRuns == 1){

      int nrLedsBrake = NUM_LEDS_PER_STRIP / 4;
      for(int i = 0; i <= nrLedsBrake; i++){
        leds[i]=CHSV(0,254,maxBrtBreak);
      }

    }

    if(ReverseLights == HIGH){
      for(int i = 0; i < sizeof(reverseLightModel) / sizeof(reverseLightModel[0]); i++){
        leds[reverseLightModel[i]]=CHSV(0,0,maxBrtReverseLights);
      }
    }
    stateTSRuns = 0;
         Startup = digitalRead(buttonPinStartup);

    if(buttonPinStartup == HIGH){
      StartupState = 1;
    }


for (int i = 0; i < (NUM_LEDS_PER_STRIP/2); i++) {   //Startup Animation. Having an issue here.


    leds[i] = startupcolordim;
    leds[i-1] = black;
    leds[(NUM_LEDS_PER_STRIP-1)-i] = startupcolordim;
    leds[(NUM_LEDS_PER_STRIP)-i] = black;
    FastLED.show();
    delay (StartupSpeed);
  }

  for (int j = ((NUM_LEDS_PER_STRIP/2)-1); j >= 0; j--)
  {
    leds[j] = startupcolordim;
    leds[(NUM_LEDS_PER_STRIP/2-1)+((NUM_LEDS_PER_STRIP/2)-j)] = startupcolordim;
    FastLED.show();
    delay (StartupSpeed);
  }

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

  for (int j = 255; j >= 60; j--)
  {
    for (int i = 0; i < NUM_LEDS_PER_STRIP; i++)
    {
    leds[i] = CRGB(j, 0, 0);
    }
    FastLED.show();
    delay (5);
  }
}