#include "allocate/factory.h"
#include "code/return.h"
#include "target/linux/draw/opengl_x11_service.h"

opengl_x11_service_t::opengl_x11_service_t(
	opengl_x11_service_t::configuration_t* configuration_p
) {
	configuration_m = configuration_p;
}

return_t<opengl_x11_service_t::error_t, XVisualInfo*> opengl_x11_service_t::get_visual_info(
	Display* display_p
) {
	return_t<opengl_x11_service_t::error_t, XVisualInfo*> return_l;
	return_l.error_m = opengl_x11_service_t::error_t::none;
	GLint attributes_l[] = {
		GLX_RGBA,
		GLX_DEPTH_SIZE,
		24,
		GLX_DOUBLEBUFFER,
		None
	};
	XVisualInfo *visual_info_l = glXChooseVisual(
		display_p,
		0,
		attributes_l
	);
	if (visual_info_l == NULL) {
		return_l.error_m = opengl_x11_service_t::error_t::no_visual_found;
	}
	return_l.value_m = visual_info_l;
	return return_l;
}

void_t<opengl_x11_service_t::error_t> opengl_x11_service_t::initialize_context(
	Display* display_p,
	XVisualInfo* visual_info_p,
	Window window_p
){
	void_t<opengl_x11_service_t::error_t> void_l;
	configuration_m->glx_context_m = glXCreateContext(
		display_p,
		visual_info_p,
		NULL,
		GL_TRUE
	);
	glXMakeCurrent(
		display_p,
		window_p,
		configuration_m->glx_context_m
	);
	void_l.error_m = opengl_x11_service_t::error_t::none;
	return void_l;
}

void_t<opengl_x11_service_t::error_t> opengl_x11_service_t::swap_buffers(
	Display* display_p,
	Window window_p
) {
	void_t<opengl_x11_service_t::error_t> void_l;
	void_l.error_m = opengl_x11_service_t::error_t::none;
	glXSwapBuffers(
		display_p,
		window_p
	);
	return void_l;
}

void_t<opengl_x11_service_t::error_t> opengl_x11_service_t::dispose(
	Display* display_p
) {
	void_t<opengl_x11_service_t::error_t> void_l;
	void_l.error_m = opengl_x11_service_t::error_t::none;
	glXMakeCurrent(
		display_p,
		None,
		NULL
	);
	glXDestroyContext(
		display_p,
		configuration_m->glx_context_m
	);
	return void_l;
}

return_t<opengl_x11_service_t::error_t, opengl_x11_service_t*> opengl_x11_service_factory_t::create(
	opengl_x11_service_t::configuration_t* configuration_p
) {
	opengl_x11_service_t* opengl_x11_service_l = new opengl_x11_service_t(
		configuration_p
	);
	return_t<opengl_x11_service_t::error_t, opengl_x11_service_t*> return_l;
	return_l.error_m = opengl_x11_service_t::error_t::none;
	return_l.value_m = opengl_x11_service_l;
	return return_l;
}

void_t<opengl_x11_service_t::error_t> opengl_x11_service_factory_t::dispose(
	opengl_x11_service_t* opengl_x11_service_p
) {
	delete opengl_x11_service_p;
	void_t<opengl_x11_service_t::error_t> void_l;
	void_l.error_m = opengl_x11_service_t::error_t::none;
	return void_l;
}