#include <FastLED.h>

#include <Wire.h>
#define LED_PIN     8
#define NUM_LEDS    16
#define BRIGHTNESS  255
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB   
CRGB leds[NUM_LEDS];

#define UPDATES_PER_SECOND 10000
CRGBPalette16 currentPalette;

TBlendType    currentBlending;

extern const CRGBPalette16 CustomLavaColors_p  = {
  CRGB::DarkRed,CRGB::Red,CRGB::Red,CRGB::Orange,CRGB::Orange,CRGB::Red,CRGB::Red,CRGB::DarkRed,
 CRGB::DarkRed,CRGB::Red,CRGB::Red,CRGB::Orange,CRGB::Orange,CRGB::Red,CRGB::Red,CRGB::DarkRed,


}; //custom lavacolors

CRGBPalette16 grad[4] {
  CustomLavaColors_p,
  ForestColors_p,
  OceanColors_p,
  RainbowColors_p
};// custompallette gradients



int dfdelay = 150;
int Rlvl=0;
int Glvl=0;
int Blvl=0;
int potpin ;  // analog pin used to connect the potentiometer
int colorval;    // variable to read the value from the analog pin
int colorpick;
int val;
int new_val ;
byte buttonPin;
const uint8_t buttonPins[] = {3, 4, 5};
int mode;
int nrs[3] = {
  0, 0, 0
};//nrs
void setup() {
  delay( 500 ); // power-up safety delay
  Serial.begin(9600);
  FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );//make leds entity
  FastLED.setBrightness( BRIGHTNESS );//set brightness
  
  //FastLED.show();
  currentBlending = LINEARBLEND;

  for (byte i = 0; i <3 ; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
}
byte readButtons() {
  while (true) {
    
    
    for (byte i = 0; i <3; i++) {
      byte buttonPin = buttonPins[i];
 
     if (digitalRead(buttonPin) == LOW) {
 
 if(i==0){//3 switch gradient
  mode=1;
};
if (i==1){//4 colorpick
  mode=2;
};
if (i==2){//5 colorval
  mode=3;
};

  return i;
  };
 

 

     if(mode==3){//blue
    Serial.println("Color val");
    val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 255);     // scale it to use it with the servo (value between 0 and 180)
colorval= val;
nrs[colorpick]=colorval;

  RGB_color(nrs[0],nrs[1],nrs[2]);

  Serial.println(colorval);
  }
    else if(mode==2){//blue
Serial.println("Color pick");
val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
   val = map(val, 0, 1023, 0, 2);     // scale it to use it with the servo (value between 0 and 180)
 colorpick=val;
  Serial.println(val);
  }
  else if(mode==1){
       val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
 val = map(val, 0, 1023, 0,3);     // scale it to
Serial.println(val);
Gradient(val);
//Serial.println(gradients[val]);
    
     };
  
    }
    }
   // delay(1);
  };
void loop() {
 
 
if(val!=new_val&&mode!=4){
  //Serial.println("changed");
   new_val=val;
  return ;
 
 };

  readButtons();


};
int RGB_color(int red_light_value, int green_light_value, int blue_light_value) {
 nrs[0] = red_light_value;
  nrs[1] = green_light_value;
  nrs[2] = blue_light_value;
  for ( int i = 0; i < NUM_LEDS; i++) {
    leds[i].setRGB(nrs[0], nrs[1], nrs[2]);
  };//end for int i
  FastLED.show();
};//end rgb
void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
  for ( int i = 0; i < NUM_LEDS; i++) {
    leds[i] = ColorFromPalette(currentPalette, colorIndex, BRIGHTNESS, currentBlending);
    colorIndex += 1;
  };//end for
  FastLED.show();
};//end fill colors from pallete

void Gradient(int n) {
  currentPalette = grad[n];
  static uint8_t startIndex = 0;
  startIndex = startIndex + 1; /* motion speed */
  FillLEDsFromPaletteColors(startIndex);
  FastLED.delay( dfdelay );
  FastLED.show();
};//gradient