#include <SDL2/SDL.h>

#include "dumbLog.h"
#include "renderer.h"
#include "mesh.h"


typedef void (*frame_callback_fn) (render_state*);

void
doFrameCallback(render_state* rs)
{
}

void
doRenderLoop(render_state* rs, frame_callback_fn callback_fn)
{
	const uint TARGET_FPS = 60;
	const uint FRAME_DELAY = 1000 / TARGET_FPS;
	uint frameStart, frameTime;
	bool running = true;
	SDL_Event e;

	while (running) {
		frameStart = SDL_GetTicks();

		while (SDL_PollEvent(&e)) {
			if ((e.type == SDL_KEYDOWN && e.key.keysym.sym == SDLK_ESCAPE)
				|| e.type == SDL_QUIT) {
				running = false;
			}
		}

		callback_fn(rs);
		renRenderFrame(rs, nullptr, 0);
		SDL_GL_SwapWindow(rs->handles.window);
		frameTime = SDL_GetTicks() - frameStart;

		if (FRAME_DELAY > frameTime)
			SDL_Delay(FRAME_DELAY - frameTime);
	}
}

int
main()
{
	render_state* rs = renInit();
	meInitAssimp();
	meMeshGroup mg;

	if (meLoadFromFile(mg, "../data", "../data/spaceship.glb")) {
		doRenderLoop(rs, doFrameCallback);
	} else {
		LOG(Error) << "Error loading mesh, exiting\n";
	}

	meShutdownAssimp();
	return 0;
}