/**
 * Copyright (c) 2026 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#pragma once
#include "dusk.h"

typedef struct inputbutton_s inputbutton_t;

#ifdef DUSK_INPUT_KEYBOARD
  typedef SDL_Scancode inputscancodesdl2_t;
#endif

#ifdef DUSK_INPUT_GAMEPAD
  typedef SDL_GameControllerButton inputgamepadbuttonsdl2_t;
  typedef SDL_GameControllerAxis inputgamepadaxissdl2_t;
#endif

#ifdef DUSK_INPUT_POINTER
  typedef enum {
    INPUT_POINTER_AXIS_X,
    INPUT_POINTER_AXIS_Y,
    INPUT_POINTER_AXIS_Z,
    INPUT_POINTER_AXIS_WHEEL_X,
    INPUT_POINTER_AXIS_WHEEL_Y,
  } inputpointeraxissdl2_t;
#endif

typedef struct {
  #ifdef DUSK_INPUT_GAMEPAD
    SDL_GameController *controller;
  #endif
  
  #ifdef DUSK_INPUT_KEYBOARD
    const uint8_t *keyboardState;
  #endif

  #ifdef DUSK_INPUT_POINTER
    int16_t mouseX, mouseY;
    int16_t scrollX, scrollY;
  #endif
} inputsdl2_t;

// Setup platform variables for input.
#ifdef DUSK_INPUT_KEYBOARD
  typedef inputscancodesdl2_t inputscancodeplatform_t;
#endif

#ifdef DUSK_INPUT_GAMEPAD
  typedef inputgamepadbuttonsdl2_t inputgamepadbuttonplatform_t;
  typedef inputgamepadaxissdl2_t inputgamepadaxissplatform_t;
#endif

#ifdef DUSK_INPUT_POINTER
  typedef inputpointeraxissdl2_t inputpointeraxisplatform_t;
#endif

#define inputUpdatePlatform inputUpdateSDL2
#define inputButtonGetValuePlatform inputButtonGetValueSDL2

typedef inputsdl2_t inputplatform_t;

/**
 * Updates the input state for SDL2.
 */
void inputUpdateSDL2(void);

/**
 * Returns the deadzone for the given gamepad axis (0 to INT16_MAX).
 *
 * @param button The button to get the deadzone of.
 * @return The deadzone threshold (0 to INT16_MAX).
 */
int16_t inputGetDeadzoneSDL2(const inputbutton_t button);

/**
 * Returns the input value of the given button (0 to INT16_MAX).
 *
 * @param button The button to get the value of.
 * @return The value of the button (0 to INT16_MAX).
 */
int16_t inputButtonGetValueSDL2(const inputbutton_t button);