#include <FastLED.h>

CRGB leds[12];
int MotionRead;
int Motion;
byte ledProgram;
byte oldValue;
unsigned long timer;
unsigned long timer1;
byte y;

void pulsingWhite();
void rainbow();
void solidWhite();
void off();


void setup() {
  FastLED.addLeds<WS2812B, 1>(leds, 12);
  //MotionRead = analogRead(1);
  //Motion = map(MotionRead, 0, 1023, 0, 255);
  //oldValue = Motion;
}


void loop() {

  MotionRead = analogRead(1);
  Motion = map(MotionRead, 0, 1023, 0, 255);

  solidWhite();
  if (Motion - oldValue > 15 || oldValue - Motion > 15) {
    oldValue = Motion;
    if (millis() > timer1 + 1000) {
      ledProgram++;
      timer1 = millis();
      if (ledProgram > 4)ledProgram = 0;
    }
  }


  switch (ledProgram) {
    case 0:
      {
        solidWhite();
        break;
      }
    case 1:
      {
        pulsingWhite();
        break;
      }
    case 2:
      {
        candle();
        break;
      }
    case 3:
      {
        rainbow();
        break;
      }
    case 4:
      {
        off();
        break;
      }
  }
  FastLED.show();
}


void solidWhite() {
  for (int x = 0; x < 12; x++) {
    leds[x] = CHSV(0, 0 , 255);
  }
}

void pulsingWhite() {
  if (millis() > timer + 100) {
    y++;
    //if (y == 255)y = 0;
    timer = millis();
  }
  for (int x = 0; x < 12; x++) {
    leds[x] = CHSV(0, 0, y);
  }
}


void candle() {
  if (millis() > timer + 400) {
    for (int x = 0; x < 12; x++) {
      y = random8();
      leds[x] = CHSV(0, 0, 255 - y);
    }
    timer = millis();
  }
}

void rainbow() {
  if (millis() > timer + 100) {
    y++;
    //if (y == 255)y = 0;
    timer = millis();
  }
  for (int x = 0; x < 12; x++) {
    leds[x] = CHSV(y, 255, 255);
  }
}


void off() {
  for (int x = 0; x < 12; x++) {
    leds[x] = CHSV(0, 0, 0);
  }
}