#include "SevSeg.h"
SevSeg sevseg;

const int buttonPin = 10;     // Pin connected to the button
int currentNumber = 0;        // Current number displayed on the 7-segment
bool lastButtonState = HIGH;  // Last state of the button
unsigned long lastDebounceTime = 0;  // Last time the button state changed
const unsigned long debounceDelay = 50;  // Debounce time in milliseconds

void setup() {
  // Initialize serial communication for debugging
  Serial.begin(9600);
  
  // Set to 1 for single digit display
  byte numDigits = 1;
  
  // Defines common pins while using multi-digit display. Left empty as we have a single digit display
  byte digitPins[] = {};
  
  // Defines Arduino pin connections in order: A, B, C, D, E, F, G, DP
  byte segmentPins[] = {3, 2, 8, 7, 6, 4, 5, 9};
  bool resistorsOnSegments = true;
  
  // Initialize sevseg object
  sevseg.begin(COMMON_CATHODE, numDigits, digitPins, segmentPins, resistorsOnSegments);
  // sevseg.begin(COMMON_ANODE, numDigits, digitPins, segmentPins, resistorsOnSegments);
  
  sevseg.setBrightness(90);
  
  // Initialize button pin
  pinMode(buttonPin, INPUT);  // No internal pull-up resistor, as we use an external one
  
  // Initialize the display with the first number
  sevseg.setNumber(currentNumber);
  sevseg.refreshDisplay();
}

bool buttonPressed = false;

void loop() {
  // Read the current state of the button
  bool reading = digitalRead(buttonPin);
  Serial.print("Button state: ");
  Serial.println(reading);
  
  // Check if the button state has changed
  if (reading!= lastButtonState) {
    Serial.println("Button state changed");
    // Reset the debounce timer
    lastDebounceTime = millis();
    buttonPressed = false;
  }
  
  // Check if the debounce delay has passed
  if ((millis() - lastDebounceTime) > debounceDelay) {
    Serial.println("Debounce delay passed");
    // If the button state has changed, update the current number
    if (reading == LOW &&!buttonPressed) {
      Serial.println("Button pressed");
      // Increment the number and reset to 0 if it exceeds 9
      currentNumber++;
      if (currentNumber > 9) {
        currentNumber = 0;
      }
      
      // Update the 7-segment display
      sevseg.setNumber(currentNumber);
      Serial.print("Current number: ");
      Serial.println(currentNumber);
      buttonPressed = true;
    } else if (reading == HIGH && buttonPressed) {
      buttonPressed = false;
    }
  }
  
  // Update the last button state
  lastButtonState = reading;
  
  // Refresh the display
  sevseg.refreshDisplay();
  delay(100);
}