#ifndef DOUGH_BUTTON_H
#define DOUGH_BUTTON_H

#define BUTTON_DEBOUNCE_DELAY 50
#define BUTTON_LONGPRESS_DELAY 1000

#include <Arduino.h>

typedef enum
{
    UP,
    DOWN,
    DOWN_LONG,
    UP_AFTER_LONG,
    UP_AFTER_SHORT,
    READY_FOR_NEXT_PRESS
} DoughButtonState;

typedef void (*DoughButtonHandler)();

/**
 * This class provides a simple interface for handling button presses.
 * Only a few events are supported:
 * 
 * - short press: a button up event, will not trigger after long press
 * - long press: when a button is held down for a while
 * - press: this is a button down event, which will only trigger if
 *   short press and long press events aren't used
 */
class DoughButton
{
public:
    DoughButton(int pin);
    void setup();
    void loop();
    void onInterrupt(DoughButtonHandler isr);
    void onPress(DoughButtonHandler handler);
    void onShortPress(DoughButtonHandler handler);
    void onLongPress(DoughButtonHandler handler);
    void clearEvents();
    void handleButtonState();

private:
    int _pin;
    DoughButtonHandler _pressHandler = nullptr;
    DoughButtonHandler _shortPressHandler = nullptr;
    DoughButtonHandler _longPressHandler = nullptr;
    bool _debounceState = false;
    unsigned long _debounceTimer = 0;
    DoughButtonState _state = UP;
};

#endif