Detect short and long presses from multiple buttons

[bertenvdb]

I want to detect short and long presses from 5 buttons, but this doesn't work good at all.
Is this a limitation of the library, or is it my code?

#include <Arduino.h>
#include <ezButton.h>

struct buttonData
{
  buttonData(int pin) : button(pin, INPUT){};
  unsigned long pressedTime = 0;
  unsigned long releasedTime = 0;
  bool isPressing = false;
  bool isLongDetected = false;
  ezButton button;
};

const int BUTTON_NUM = 5;
buttonData buttons[] = {
    buttonData(39),
    buttonData(35),
    buttonData(33),
    buttonData(34),
    buttonData(14),
};

const int SHORT_PRESS_TIME = 1000;
const int LONG_PRESS_TIME = 1500;

void handle_shortPress(int buttonNumber) {}

void handle_longPress(int buttonNumber) {}

void setup()
{
  Serial.begin(115200);
  Serial.println("Starting");

  for (byte i = 0; i < BUTTON_NUM; i++)
  {
    buttons[i].button.setDebounceTime(50);
  }
}

void loop()
{
  for (byte i = 0; i < BUTTON_NUM; i++)
    buttons[i].button.loop();

  for (byte i = 0; i < BUTTON_NUM; i++)
  {
    if (buttons[i].button.isPressed())
    {
      buttons[i].pressedTime = millis();
      buttons[i].isPressing = true;
      buttons[i].isLongDetected = false;
    }

    if (buttons[i].button.isReleased())
    {
      buttons[i].isPressing = false;
      buttons[i].releasedTime = millis();

      long pressDuration = buttons[i].releasedTime - buttons[i].pressedTime;

      if (pressDuration < SHORT_PRESS_TIME)
      {
        Serial.print("Short press button ");
        Serial.println(i);
        handle_shortPress(i);
      }
    }

    if (buttons[i].isPressing == true && buttons[i].isLongDetected == false)
    {
      long pressDuration = millis() - buttons[i].pressedTime;

      if (pressDuration > LONG_PRESS_TIME)
      {
        Serial.print("Long press button ");
        Serial.println(i);
        handle_longPress(i);
        buttons[i].isLongDetected = true;
      }
    }
}