/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Sergey Sharybin, Sybren A. Stuvel
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/python/intern/bpy_app_sdl.c
 *  \ingroup pythonintern
 */

#include <Python.h>
#include "BLI_utildefines.h"

#include "bpy_app_sdl.h"

#ifdef WITH_SDL
#  include "SDL.h"
#  ifdef WITH_SDL_DYNLOAD
#    include "sdlew.h"
#  endif
#endif

static PyTypeObject BlenderAppSDLType;

static PyStructSequence_Field app_sdl_info_fields[] = {
	{(char *)"supported", (char *)("Boolean, True when Blender is built with SDL support")},
	{(char *)"version", (char *)("The SDL version as a tuple of 3 numbers")},
	{(char *)"version_string", (char *)("The SDL version formatted as a string")},
	{(char *)"available", (char *)("Boolean, True when SDL is available. This is False when "
	                               "either *supported* is False, or *dynload* is True and "
	                               "Blender cannot find the correct library.")},
    {NULL}
};

static PyStructSequence_Desc app_sdl_info_desc = {
	(char *)"bpy.app.sdl",     /* name */
	(char *)"This module contains information about SDL blender is linked against",    /* doc */
	app_sdl_info_fields,    /* fields */
	ARRAY_SIZE(app_sdl_info_fields) - 1
};

static PyObject *make_sdl_info(void)
{
	PyObject *sdl_info;
	int pos = 0;
#ifdef WITH_SDL
	bool sdl_available = false;
	SDL_version version = {0, 0, 0};
#endif

	sdl_info = PyStructSequence_New(&BlenderAppSDLType);
	if (sdl_info == NULL) {
		return NULL;
	}

#define SetStrItem(str) \
	PyStructSequence_SET_ITEM(sdl_info, pos++, PyUnicode_FromString(str))

#define SetObjItem(obj) \
	PyStructSequence_SET_ITEM(sdl_info, pos++, obj)

#ifdef WITH_SDL
	SetObjItem(PyBool_FromLong(1));

# ifdef WITH_SDL_DYNLOAD
	if (sdlewInit() == SDLEW_SUCCESS) {
		SDL_GetVersion(&version);
		sdl_available = true;
	}
# else // WITH_SDL_DYNLOAD=OFF
	sdl_available = true;
#  if SDL_MAJOR_VERSION >= 2
	SDL_GetVersion(&version);
#  else
	SDL_VERSION(&version);
#  endif
# endif

	SetObjItem(Py_BuildValue("(iii)", version.major, version.minor, version.patch));
	if (sdl_available) {
		SetObjItem(PyUnicode_FromFormat("%d.%d.%d", version.major, version.minor, version.patch));
	}
	else {
		SetStrItem("Unknown");
	}
	SetObjItem(PyBool_FromLong(sdl_available));

#else // WITH_SDL=OFF
	SetObjItem(PyBool_FromLong(0));
	SetObjItem(Py_BuildValue("(iii)", 0, 0, 0));
	SetStrItem("Unknown");
	SetObjItem(PyBool_FromLong(0));
#endif

	if (PyErr_Occurred()) {
		Py_CLEAR(sdl_info);
		return NULL;
	}

#undef SetStrItem
#undef SetObjItem

	return sdl_info;
}

PyObject *BPY_app_sdl_struct(void)
{
	PyObject *ret;

	PyStructSequence_InitType(&BlenderAppSDLType, &app_sdl_info_desc);

	ret = make_sdl_info();

	/* prevent user from creating new instances */
	BlenderAppSDLType.tp_init = NULL;
	BlenderAppSDLType.tp_new = NULL;
	BlenderAppSDLType.tp_hash = (hashfunc)_Py_HashPointer; /* without this we can't do set(sys.modules) [#29635] */

	return ret;
}