#pragma once

// https://wiki.libsdl.org/SDL3/README-migration#sdl_stdinch
#define SDL_bool bool

#include <SDL2/SDL.h>
#include "SDL_events.h"
#include "SDL_gamepad.h"
#include "SDL_iostream.h"
#include "SDL_keyboard.h"
#include "SDL_mutex.h"
#include "SDL_pixels.h"
#include "SDL_surface.h"
#include "SDL_timer.h"

// https://wiki.libsdl.org/SDL3/README-migration#sdl_logh

#define SDL_LogTrace SDL_LogVerbose

// https://wiki.libsdl.org/SDL3/README-migration#sdl_videoh

typedef Uint32 SDL_DisplayID;
inline SDL_DisplayID SDL_GetPrimaryDisplay()
{
	return 0;
}

// Modified from 83bb0f9105922fd49282f0b931f7873a71877ac8 SDL_video.c#L1331
inline SDL_DisplayMode** SDL_GetFullscreenDisplayModes(SDL_DisplayID displayID, int *count)
{
	int i;
	if (count) *count = 0;

	const int num_modes = SDL_GetNumDisplayModes(displayID);
	SDL_DisplayMode** result = static_cast<SDL_DisplayMode**>(SDL_malloc(sizeof(SDL_DisplayMode*) * num_modes));
	if (result) {
		SDL_DisplayMode *modes = (SDL_DisplayMode *)((Uint8 *)result + ((num_modes + 1) * sizeof(*result)));
        for (i = 0; i < num_modes; ++i) {
        	if (SDL_GetDisplayMode(displayID, i, &modes[i]) == 0) {
				result[i] = modes++;
        	}
        }
        result[i] = NULL;

        if (count) {
            *count = num_modes;
        }
		SDL_free(modes);
    } else {
        if (count) {
            *count = 0;
        }
    }
    return result;
}

inline SDL_DisplayMode* SDL_GetCurrentDisplayMode(SDL_DisplayID displayID)
{
	SDL_DisplayMode* mode = nullptr;
	SDL_GetCurrentDisplayMode(displayID, mode);
	return mode;
}

#define SDL_GetWindowSize(...) (SDL_GetWindowSize(__VA_ARGS__), true )

// https://wiki.libsdl.org/SDL3/README-migration#sdl_videoh

#define SDL_GL_DestroyContext SDL_GL_DeleteContext

// https://wiki.libsdl.org/SDL3/README-migration#sdl_renderh

// hardcode -1 as all uses are NULL or -1 (hacks out failure)
#define SDL_CreateRenderer(window, name) SDL_CreateRenderer(window, -1, 0)

#define SDL_RenderTexture SDL_RenderCopyF

// https://wiki.libsdl.org/SDL3/README-migration#sdl_haptich
// SDL_MouseID/SDL_KeyboardID are new

typedef int SDL_MouseID;
typedef int SDL_KeyboardID;
#define SDL_GetKeyboardState (const bool*)SDL_GetKeyboardState
typedef int SDL_HapticID;


#define SDL_CloseHaptic SDL_HapticClose
#define SDL_OpenHaptic SDL_HapticOpen
#define SDL_OpenHapticFromJoystick SDL_HapticOpenFromJoystick
#define SDL_OpenHapticFromMouse SDL_HapticOpenFromMouse
#define SDL_InitHapticRumble SDL_HapticRumbleInit
#define SDL_PlayHapticRumble SDL_HapticRumblePlay

#define SDL_GetHapticID SDL_HapticIndex

// Modified from cc9937201e421ec55b12ad3f07ff2268f15096e8 SDL_haptic.c#L150
inline SDL_HapticID* SDL_GetHaptics(int *count)
{
	const int num_haptics = SDL_NumHaptics();
	if (count) *count = 0;

	SDL_HapticID* haptics = static_cast<SDL_HapticID*>(SDL_malloc((num_haptics + 1) * sizeof(*haptics)));
	if (haptics) {
		if (count) {
			*count = num_haptics;
		}
		int haptic_index = 0;
		for (int device_index = 0; device_index < num_haptics; ++device_index) {
			SDL_Haptic* haptic = SDL_HapticOpen(device_index);
			if (haptic) {
				haptics[haptic_index] = SDL_GetHapticID(haptic);
				SDL_HapticClose(haptic);
				++haptic_index;
			}
		}
		haptics[haptic_index] = 0;
	} else { if (count) *count = 0; }

	return haptics;
}