/**
 * @file commonFunctions.cpp
 * @author Lyubomir Penev (me@lpenev.com, 571147@student.fontys.nl)
 * @brief This file contains all the functions used to read buttons
 * @version 0.1
 * @date 2025-10-31
 *
 * @copyright Copyright (c) 2025
 *
 */

#include <Arduino.h>
#include <commonFunctions.h>
#include <constants.h>

/**
 * @brief Function used to read state of a normally open(LOW) button
 *
 * @param buttonPin The pin of the button
 * @return true
 * @return false
 */
bool Reader::debounceReadNO(int buttonPin)
{
    bool reading = digitalRead(buttonPin);

    if (reading)
    {
        lastPin = buttonPin;
    }

    bool buttonPressed = false;

    if (reading != lastButtonStateNO && lastPin == buttonPin)
    {
        lastDebounceTime = millis(); // reset debounce timer
    }

    if ((millis() - lastDebounceTime) > DEBOUNCE_DELAY)
    {
        // If button state is stable and just changed to pressed
        if (reading == HIGH && buttonStateNO == LOW)
        {
            buttonPressed = true;
        }
        buttonStateNO = reading;
    }

    if (lastPin == buttonPin)
    {
        lastButtonStateNO = reading;
    }
    return buttonPressed;
}

/**
 * @brief Function used to read state of a normally closed(HIGH) button
 *
 * @param buttonPin The pin of the button
 * @return true
 * @return false
 */
bool Reader::debounceReadNC(int buttonPin)
{
    bool reading = digitalRead(buttonPin);

    if (reading == LOW)
    {
        lastPin = buttonPin;
    }

    bool buttonPressed = false;

    if (reading != lastButtonStateNC && lastPin == buttonPin)
    {
        lastDebounceTime = millis(); // reset debounce timer
    }

    if ((millis() - lastDebounceTime) > DEBOUNCE_DELAY)
    {
        // If button state is stable and just changed to pressed
        if (reading == LOW && buttonStateNC == HIGH)
        {
            buttonPressed = true;
        }
        buttonStateNC = reading;
    }

    if (lastPin == buttonPin)
    {
        lastButtonStateNC = reading;
    }
    return buttonPressed;
}