#include <FastLED.h>

#define LED_PIN     5
#define NUM_LEDS    100
#define BRIGHTNESS  255
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];

#define UPDATES_PER_SECOND 100

// This example shows several ways to set up and use 'palettes' of colors
// with FastLED.
//
// These compact palettes provide an easy way to re-colorize your
// animation on the fly, quickly, easily, and with low overhead.
//
// USING palettes is MUCH simpler in practice than in theory, so first just
// run this sketch, and watch the pretty lights as you then read through
// the code.  Although this sketch has eight (or more) different color schemes,
// the entire sketch compiles down to about 6.5K on AVR.
//
// FastLED provides a few pre-configured color palettes, and makes it
// extremely easy to make up your own color schemes with palettes.
//
// Some notes on the more abstract 'theory and practice' of
// FastLED compact palettes are at the bottom of this file.



CRGBPalette16 currentPalette;
TBlendType    currentBlending;

extern CRGBPalette16 myRedWhiteBluePalette;
extern const TProgmemPalette16 myRedWhiteBluePalette_p PROGMEM;


void setup() {
    Serial.begin(115200);
    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.setBrightness( BRIGHTNESS );

    currentPalette = RainbowColors_p;
    currentBlending = LINEARBLEND;
    /*
    for(int i = 50; i < NUM_LEDS; i++) {
				leds[i] = CHSV((i-50)*5, 255, 255);
        Serial.print(i);Serial.print(":");
        Serial.print(leds[i].r);Serial.print(":");
        Serial.print(leds[i].g);Serial.print(":");
        Serial.println(leds[i].b);
    }
    for (int i=0;i<8;i++)
      {
      leds[i].r=255;      
      leds[i].g=i*30;
      leds[i].b=0;
      
      leds[i+8].r=255-i*30;
      leds[i+8].g=255;
      leds[i+8].b=0;
      
      leds[i+16].r=0;
      leds[i+16].g=255;
      leds[i+16].b=i*30;

      leds[i+24].r=0;
      leds[i+24].g=255-i*30;
      leds[i+24].b=255;

      leds[i+32].r=i*30;
      leds[i+32].g=0;
      leds[i+32].b=255;

      leds[i+40].r=255;      
      leds[i+40].g=0; 
      leds[i+40].b=255-i*30;
      
      
      }
  */
  leds[0]=CRGB(255,255,255);

  leds[1]=CRGB(255,0,0);
  leds[2]=CRGB(255,63,0);
  leds[3]=CRGB(255,127,0);
  leds[4]=CRGB(255,191,0);

  leds[5]=CRGB(255,255,0);
  leds[6]=CRGB(191,255,0);
  leds[7]=CRGB(127,255,0);
  leds[8]=CRGB(63,255,0);

  leds[9]=CRGB(0,255,0);  
  leds[10]=CRGB(0,255,63);
  leds[11]=CRGB(0,255,127);
  leds[12]=CRGB(0,255,191);
  
  leds[13]=CRGB(0,255,255);
  leds[14]=CRGB(0,191,255);
  leds[15]=CRGB(0,127,255);
  leds[16]=CRGB(0,63,255);
  leds[17]=CRGB(0,0,255);
  leds[18]=CRGB(63,0,255);
  leds[19]=CRGB(127,0,255);
  leds[20]=CRGB(191,0,255);
  leds[21]=CRGB(255,0,255);
  leds[22]=CRGB(255,0,191);
  leds[23]=CRGB(255,0,127);
  leds[24]=CRGB(255,0,63);
  leds[25]=CRGB(0,0,0);
  leds[26]=CRGB(63,63,63);
  leds[27]=CRGB(127,127,127);
  leds[28]=CRGB(191,191,191);
  leds[29]=CRGB(255,255,255);
  FastLED.show();        
}


void fadeall() { for(int i = 0; i < NUM_LEDS; i++) { leds[i].nscale8(250); } }

void cikl()
{
  	static uint8_t hue = 0;
	
	// First slide the led in one direction
	for(int i = 0; i < NUM_LEDS; i++) {
		// Set the i'th led to red 
		leds[i] = CHSV(hue++, 255, 255);
		// Show the leds
		FastLED.show(); 
		// now that we've shown the leds, reset the i'th led to black
		// leds[i] = CRGB::Black;
		fadeall();
		// Wait a little bit before we loop around and do it again
		delay(10);
	}


	// Now go in the other direction.  
	for(int i = (NUM_LEDS)-1; i >= 0; i--) {
		// Set the i'th led to red 
		leds[i] = CHSV(hue++, 255, 255);
		// Show the leds
		FastLED.show();
		// now that we've shown the leds, reset the i'th led to black
		// leds[i] = CRGB::Black;
		fadeall();
		// Wait a little bit before we loop around and do it again
		delay(10);
	}
}
void oneled()
{
  static uint16_t n=0;
  leds[n]=CRGB(244, 3, 3);
  FastLED.show();
  delay(100);
  leds[n]=CRGB(0,0,0);
  FastLED.show();
  n=(n+1)%NUM_LEDS;
}
void loop()
{
  // oneled();
  //cikl();
  return; 
    ChangePalettePeriodically();

    static uint8_t startIndex = 0;
    startIndex = startIndex + 1; /* motion speed */

    FillLEDsFromPaletteColors( startIndex);

    FastLED.show();
    FastLED.delay(1000 / UPDATES_PER_SECOND);
}

void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
    uint8_t brightness = 255;

    for( int i = 0; i < NUM_LEDS; i++) {
        leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending);
        colorIndex += 3;
    }
}


// There are several different palettes of colors demonstrated here.
//
// FastLED provides several 'preset' palettes: RainbowColors_p, RainbowStripeColors_p,
// OceanColors_p, CloudColors_p, LavaColors_p, ForestColors_p, and PartyColors_p.
//
// Additionally, you can manually define your own color palettes, or you can write
// code that creates color palettes on the fly.  All are shown here.

void ChangePalettePeriodically()
{
    uint8_t secondHand = (millis() / 1000) % 60;
    static uint8_t lastSecond = 99;

    if( lastSecond != secondHand) {
        lastSecond = secondHand;
        if( secondHand ==  0)  { currentPalette = RainbowColors_p;         currentBlending = LINEARBLEND; }
        if( secondHand == 10)  { currentPalette = RainbowStripeColors_p;   currentBlending = NOBLEND;  }
        if( secondHand == 15)  { currentPalette = RainbowStripeColors_p;   currentBlending = LINEARBLEND; }
        if( secondHand == 20)  { SetupPurpleAndGreenPalette();             currentBlending = LINEARBLEND; }
        if( secondHand == 25)  { SetupTotallyRandomPalette();              currentBlending = LINEARBLEND; }
        if( secondHand == 30)  { SetupBlackAndWhiteStripedPalette();       currentBlending = NOBLEND; }
        if( secondHand == 35)  { SetupBlackAndWhiteStripedPalette();       currentBlending = LINEARBLEND; }
        if( secondHand == 40)  { currentPalette = CloudColors_p;           currentBlending = LINEARBLEND; }
        if( secondHand == 45)  { currentPalette = PartyColors_p;           currentBlending = LINEARBLEND; }
        if( secondHand == 50)  { currentPalette = myRedWhiteBluePalette_p; currentBlending = NOBLEND;  }
        if( secondHand == 55)  { currentPalette = myRedWhiteBluePalette_p; currentBlending = LINEARBLEND; }
    }
}

// This function fills the palette with totally random colors.
void SetupTotallyRandomPalette()
{
    for( int i = 0; i < 16; i++) {
        currentPalette[i] = CHSV( random8(), 255, random8());
    }
}

// This function sets up a palette of black and white stripes,
// using code.  Since the palette is effectively an array of
// sixteen CRGB colors, the various fill_* functions can be used
// to set them up.
void SetupBlackAndWhiteStripedPalette()
{
    // 'black out' all 16 palette entries...
    fill_solid( currentPalette, 16, CRGB::Black);
    // and set every fourth one to white.
    currentPalette[0] = CRGB::White;
    currentPalette[4] = CRGB::White;
    currentPalette[8] = CRGB::White;
    currentPalette[12] = CRGB::White;

}

// This function sets up a palette of purple and green stripes.
void SetupPurpleAndGreenPalette()
{
    CRGB purple = CHSV( HUE_PURPLE, 255, 255);
    CRGB green  = CHSV( HUE_GREEN, 255, 255);
    CRGB black  = CRGB::Black;

    currentPalette = CRGBPalette16(
                                   green,  green,  black,  black,
                                   purple, purple, black,  black,
                                   green,  green,  black,  black,
                                   purple, purple, black,  black );
}


// This example shows how to set up a static color palette
// which is stored in PROGMEM (flash), which is almost always more
// plentiful than RAM.  A static PROGMEM palette like this
// takes up 64 bytes of flash.
const TProgmemPalette16 myRedWhiteBluePalette_p PROGMEM =
{
    CRGB::Red,
    CRGB::Gray, // 'white' is too bright compared to red and blue
    CRGB::Blue,
    CRGB::Black,

    CRGB::Red,
    CRGB::Gray,
    CRGB::Blue,
    CRGB::Black,

    CRGB::Red,
    CRGB::Red,
    CRGB::Gray,
    CRGB::Gray,
    CRGB::Blue,
    CRGB::Blue,
    CRGB::Black,
    CRGB::Black
};



// Additional notes on FastLED compact palettes:
//
// Normally, in computer graphics, the palette (or "color lookup table")
// has 256 entries, each containing a specific 24-bit RGB color.  You can then
// index into the color palette using a simple 8-bit (one byte) value.
// A 256-entry color palette takes up 768 bytes of RAM, which on Arduino
// is quite possibly "too many" bytes.
//
// FastLED does offer traditional 256-element palettes, for setups that
// can afford the 768-byte cost in RAM.
//
// However, FastLED also offers a compact alternative.  FastLED offers
// palettes that store 16 distinct entries, but can be accessed AS IF
// they actually have 256 entries; this is accomplished by interpolating
// between the 16 explicit entries to create fifteen intermediate palette
// entries between each pair.
//
// So for example, if you set the first two explicit entries of a compact
// palette to Green (0,255,0) and Blue (0,0,255), and then retrieved
// the first sixteen entries from the virtual palette (of 256), you'd get
// Green, followed by a smooth gradient from green-to-blue, and then Blue.