#include <FastLED.h>

#define NUM_LEDS 24


#define DATA_PIN 8 //How boring and obvious!
#define COLOR_ORDER GRB //Green (G), Red (R), Blue (B)
#define CHIPSET WS2812B
#define BRIGHTNESS 250
#define VOLTS 5 
#define MAX_AMPS 3600 //value in milliamps

// Define the array of leds
CRGB leds[NUM_LEDS];



void setup() { 
    
  FastLED.addLeds<CHIPSET,DATA_PIN,COLOR_ORDER>(leds,NUM_LEDS);
  FastLED.setMaxPowerInVoltsAndMilliamps(VOLTS,MAX_AMPS);
  FastLED.setBrightness(BRIGHTNESS);
  FastLED.clear();
  FastLED.show(); 
    pinMode(2, INPUT_PULLUP);
    pinMode(3, INPUT_PULLUP);
    pinMode(4, INPUT_PULLUP);
    pinMode(5, INPUT_PULLUP);
   
}

void loop() { 

  int valeurBouton = digitalRead(2);
  int valeurBouton2 = digitalRead(3);
  int valeurBouton3 = digitalRead(4);
  int valeurBouton4 = digitalRead(5);
  CRGB color;
  int delay_ms;

   if ((valeurBouton == LOW) || (valeurBouton2 == LOW) || (valeurBouton3 == LOW) || (valeurBouton4 == LOW)) {

    if (valeurBouton == LOW) {
      color = CRGB::Red;
      delay_ms = 1500;
    } else if (valeurBouton2 == LOW) {
      color = CRGB::Green;
      delay_ms = 300;
    } else if (valeurBouton3 == LOW) {
      color = CRGB::Yellow;
      delay_ms = 500;
    } else if (valeurBouton4 == LOW) {
      color = CRGB::Blue;
      delay_ms = 600;
    }
      fill_solid(leds, NUM_LEDS, color);
      FastLED.setBrightness(BRIGHTNESS);

      for (int i = 0; i<=24; i++){
        FastLED.show();
        leds[i] = CRGB::Black;
        delay(delay_ms);
      }
      
      int rep = 0;
      while(rep<3) {
        rep++;
        for (int i=0; i<NUM_LEDS; i++) {
          leds[i] = color; 
        }
        for (int i=0; i<BRIGHTNESS; i++) {
          FastLED.setBrightness(i);
          FastLED.show();
          delay(1);
        }
        for (int i=BRIGHTNESS; i>=0; i--) {
          FastLED.setBrightness(i);
          FastLED.show();
          delay(1);
        }
      }
  }
}