#include <Adafruit_NeoPixel.h>
#include <LiquidCrystal_I2C.h>
Adafruit_NeoPixel a(20, 4, NEO_GRB + NEO_KHZ800);
LiquidCrystal_I2C lcd(0x27, 20, 4);

int ktory = 1;

int kde[] = {4, 8, 12, 16};
bool test1 = true;

void setup() {
  Serial.begin(9600);
  pinMode(3, INPUT_PULLUP);
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);

  a.begin();
  lcd.init();
  lcd.backlight();
}

void loop() {
int brightnes;

  int jozo = analogRead(A0);
  jozo = map(jozo, 0, 1023, 0, 250);

  int color = analogRead(A1);
  color = map(color, 0, 1023, 0, 2);

  lcd.setCursor(0, 0);
  lcd.print("delay:");
  lcd.println(jozo);
  lcd.print("  ");
  lcd.setCursor(0, 2);
  lcd.print("color:");
  lcd.println(color);
  lcd.print("  ");



    for (int i = 0; i < 20; i++) {
      a.setPixelColor(i, brightnes, 0, 0);
      a.show();
      delay(jozo);
      a.setPixelColor(i, 0, 0, 0);
      a.show();
      if (i == 20)
        i = 0;
    }


  if (digitalRead(3) == LOW && test1 == true && ktory == 1) {
    test1 = false;
    if (color == 0) {
      color = 1;
    }
    else if (color == 1) {
      color = 2;
    }
    else if (color == 2) {
      color = 3;
    }
    ktory = 2;
    Serial.println(ktory);
    Serial.println(color);
  }

  else if (digitalRead(3) == HIGH && test1 == false)
  {
    test1 = true;
  }
  else if (digitalRead(3) == LOW && test1 == true && ktory == 2) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("brightnes");
    int brightnes = analogRead(A1);
    brightnes = map(brightnes, 0, 1023, 0, 255);
    lcd.println(brightnes);
    lcd.print("  ");


    test1 = false;
    ktory = 1 ;
  }
  else if (digitalRead(3) == HIGH && test1 == false)
  {
    test1 = true;
  }

}