#define SDL_MAIN_USE_CALLBACKS
#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h>
#include "stb_image.h"

#include "dat.h"
#include "fns.h"

void
SDL_AppQuit(void *as, SDL_AppResult res)
{
	State *st;

	st = as;
	if (st) {
	        babble("put samply to bed!!");
		put_samply_to_bed(st->sam);
	        babble("free state...");
	        SDL_free(st);
	}

	babble("bye!");
	return;
}

SDL_AppResult
SDL_AppEvent(void *as, SDL_Event *ev)
{
	switch (ev->type) {
	case SDL_EVENT_MOUSE_BUTTON_DOWN:
		babble("mouse button down event");
		if (ev->button.button == SDL_BUTTON_RIGHT) {
			babble("right-click quit requested");
			return SDL_APP_SUCCESS;
		}
		break;
	case SDL_EVENT_QUIT:
		babble("quit requested");
		return SDL_APP_SUCCESS;
		break; /* unreachable; here for visual symmetry */
	}

	return SDL_APP_CONTINUE;
}

SDL_AppResult
SDL_AppIterate(void *as)
{
	State *st = as;
	SDL_Texture *tx;
	Uint64 ms;

	st->frame++;
	SDL_SetRenderDrawColor(st->ren, 0, 0, 0, SDL_ALPHA_TRANSPARENT);
	SDL_RenderClear(st->ren);

	if (samply_step(st) < 0)
		return SDL_APP_FAILURE;

	SDL_RenderPresent(st->ren);
	st->lastframe = SDL_GetTicks();

	return SDL_APP_CONTINUE;
}

SDL_AppResult
SDL_AppInit(void **as, int argc, char **argv)
{
	State *st;

	babble("init sdl...");
	if (!SDL_Init(SDL_INIT_VIDEO)) {
		fuck("sdl init fail: %s", SDL_GetError());
		return SDL_APP_FAILURE;
	}

	babble("alloc state...");
	st = SDL_calloc(1, sizeof(State));
	if (!st) {
		fuck("mem alloc fail: %s", SDL_GetError());
		return SDL_APP_FAILURE;
	}
	*as = st;

	SDL_SetHint(SDL_HINT_X11_FORCE_OVERRIDE_REDIRECT, "1");

	st->lastframe = SDL_GetTicks();
	st->frame = 0;

	babble("create win+render...");
	if (!SDL_CreateWindowAndRenderer("slutpet", 320, 320,
				SDL_WINDOW_TRANSPARENT | SDL_WINDOW_BORDERLESS
				| SDL_WINDOW_NOT_FOCUSABLE
				| SDL_WINDOW_ALWAYS_ON_TOP,
				&st->win, &st->ren)) {
		fuck("win creation fail: %s", SDL_GetError());
		return SDL_APP_FAILURE;
	}

	if (SDL_EnableScreenSaver() == false)
		shit("cannot disable screensaver: %s", SDL_GetError());

	st->dpy = SDL_GetDisplayForWindow(st->win);
	if (!st->dpy) {
		fuck("cannot get current display: %s", SDL_GetError());
		return SDL_APP_FAILURE;
	}

	if (SDL_GetDisplayBounds(st->dpy, &st->bounds) == false) {
		fuck("cannot get display bounds: %s", SDL_GetError());
		return SDL_APP_FAILURE;
	}

	babble("create samply!!...");
	st->sam = wake_samply_up(st);
	if (!st->sam) {
		fuck("samply said no. too bad!");
		return SDL_APP_FAILURE;
	}

	babble("hi!!");
	babble("program startup took %llums!", SDL_GetTicks());
	return SDL_APP_CONTINUE;
}