#include <LiquidCrystal.h>
#include <EncButton.h>
const int rs = 12, en = 11, d4 = 2, d5 = 3, d6 = 4, d7 = 5;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

Button BTN1(6);
Button BTN2(10);
int counter = 1000;
unsigned long lastTime;

void setup() {
  lcd.begin(16, 2);
  lcd.print("TEST");
  Serial.begin(9600);
}

void loop() {
  BTN1.tick();
  BTN2.tick();

  lcd.setCursor(0, 1);
  lcd.print("Pause:");
  lcd.setCursor(6,1);

  counter = constrain(counter,0, 99999);
  if (counter==1000) {lcd.print(counter); lcd.print("   "); }

  if(BTN1.press()) {
    lcd.setCursor(6,1); 
    counter++;
    lcd.print(counter);lcd.print("    ");
  }
  if(BTN2.press() && counter > 0) {
    lcd.setCursor(6,1);
    counter--;
    lcd.print(counter); lcd.print("    ");
  }

  if(BTN1.holding()) { 
    btn1Holding(25);
  }
  if(counter>0 && BTN2.holding()) { 
    btn2Holding();
  }  

  delay(20);
}

int btn1Holding(byte maxMultiplier) {
    lcd.setCursor(6,1);
    //counter+=2; 
    if (millis()-lastTime>3000) {
      lastTime = millis();
      counter+=maxMultiplier;
    }
    else { counter+=2; }
    
    lcd.print(counter); 
    lcd.print("    ");
    return counter;
  }
  
  int btn2Holding() {
    lcd.setCursor(6,1);
    counter-=5; 
    if(counter<=0) {counter=0;} 
    lcd.print(counter); 
    lcd.print("    ");
    return counter;
  }