#include "input.h"
#include "renderer.h"

#include <linux/input-event-codes.h>
#include <sys/select.h>

#define MAX(a, b) ((a) < (b) ? (b) : (a))
#define NELEMS(arr) (sizeof(arr) / sizeof(arr[0]))

static bool quit = false;

static const vec2_t ship[] = {
	{ 0.0, 0.1 },
	{ 0.05, -0.1 },
	{ 0.0, -0.05 },
	{ -0.05, -0.1 },
};

static void key_press_callback(int key)
{
	switch (key) {
	case KEY_Q:
		quit = true;
		break;

	default:
		break;
	}
}

int main()
{
	const int input_fd = input_init();
	input_on_press(key_press_callback);

	const renderer_params_t renderer_params = renderer_init();
	const int drm_fd = renderer_params.drm_fd;
	renderer_clear();
	renderer_swap();

	const int max_fd = MAX(input_fd, drm_fd);
	fd_set set;

	while (!quit) {
		FD_ZERO(&set);
		FD_SET(input_fd, &set);
		FD_SET(drm_fd, &set);

		select(max_fd + 1, &set, nullptr, nullptr, nullptr);

		if (FD_ISSET(input_fd, &set))
			input_handle();

		if (FD_ISSET(drm_fd, &set)) {
			renderer_handle();
			renderer_clear();
			renderer_draw(ship, NELEMS(ship));
			renderer_swap();
		}
	}

	renderer_cleanup();
	input_cleanup();

	return 0;
}