#include "SevSeg.h"
SevSeg sevseg; // Instantiate a seven segment controller object

const int button1Pin = A0; // Increase by 1
const int button2Pin = A1; // Increase by 2
const int button3Pin = A2; // Increase by 3
const int buttonDownPin = A3; // Decrease by 1

int counter = 0;

void setup() {
  byte numDigits = 4;
  byte digitPins[] = {2, 3, 4, 5};
  byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12, 13};
  bool resistorsOnSegments = false;
  byte hardwareConfig = COMMON_ANODE;
  bool updateWithDelays = false;
  bool leadingZeros = false;
  bool disableDecPoint = false;

  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments,
               updateWithDelays, leadingZeros, disableDecPoint);
  sevseg.setBrightness(90);

  pinMode(button1Pin, INPUT_PULLUP);
  pinMode(button2Pin, INPUT_PULLUP);
  pinMode(button3Pin, INPUT_PULLUP);
  pinMode(buttonDownPin, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(button1Pin) == LOW) {
    counter += 1;
    delay(200);
  }
  if (digitalRead(button2Pin) == LOW) {
    counter += 2;
    delay(200);
  }
  if (digitalRead(button3Pin) == LOW) {
    counter += 3;
    delay(200);
  }
  if (digitalRead(buttonDownPin) == LOW) {
    counter -= 1;
    delay(200);
  }

  if (counter > 999) {
    counter = 999;
  }
  if (counter < 0) {
    counter = 0;
  }

  sevseg.setNumber(counter);
  sevseg.refreshDisplay();
}