#pragma once

#include <SDL3/SDL.h>

namespace radiantwave {

// Design resolution every page lays out against. The renderer's logical
// presentation (LETTERBOX) scales this fixed space onto whatever
// window/backbuffer the display actually provides.
inline constexpr int kDesignWidth = 1920;
inline constexpr int kDesignHeight = 1080;

// Returns the size pages should lay out against: the renderer's logical size
// when presentation is active, otherwise the real window size. The output
// params are always written — design constants are the last-resort fallback.
inline void getLayoutSize(SDL_Renderer *renderer, int *w, int *h)
{
	if (!w || !h)
		return;
	*w = kDesignWidth;
	*h = kDesignHeight;

	if (!renderer)
		return;

	SDL_RendererLogicalPresentation mode = SDL_LOGICAL_PRESENTATION_DISABLED;
	int logicalW = 0;
	int logicalH = 0;
	if (SDL_GetRenderLogicalPresentation(renderer, &logicalW, &logicalH,
										 &mode) &&
		mode != SDL_LOGICAL_PRESENTATION_DISABLED && logicalW > 0 &&
		logicalH > 0) {
		*w = logicalW;
		*h = logicalH;
		return;
	}

	SDL_Window *window = SDL_GetRenderWindow(renderer);
	if (!window)
		return;

	int windowW = 0;
	int windowH = 0;
	SDL_GetWindowSize(window, &windowW, &windowH);
	if (windowW > 0 && windowH > 0) {
		*w = windowW;
		*h = windowH;
	}
}

} // namespace radiantwave