#include <kernel.h>
#include <sifrpc.h>
#include <loadfile.h>
#include <sys/stat.h>
#include "SDL2/SDL.h"
int printf(const char *format, ...);

char * ps2elf_storage;

int loadModule(char * module) {
	printf("Loading module '%s' ...\n",module);
	int rtn = SifLoadModule(module,0,NULL);
	if (rtn < 0) {
		printf("Could not load module '%s': %d\n",module,rtn);
	}
	return rtn;
}

int main(int argc, char **argv)
{
	// Just some debugging
	printf("Arguments:\n");
	for (int i=0; i < argc; i++) {
		printf("* %d: %s\n",i,argv[i]);
	}
	printf("\n");
	
	// Getting the device from elf path
	char * sep = strchr(argv[0], ':');
	if (sep == NULL) {
		printf("ERROR: Could not find storage device of elf!\n");
		return 1;
	} else {
		SifInitRpc(0);
		size_t size = sep - argv[0];
		ps2elf_storage = malloc(size + 1);
		memcpy(ps2elf_storage,argv[0],size);
		ps2elf_storage[size] = 0;
		printf("* Detected storage device: '%s'\n",ps2elf_storage);
		
		int rtn;
		if (strcmp(ps2elf_storage,"mc0") || strcmp(ps2elf_storage,"mc1")) {
			char module[] = "rom0:MCMAN";
			
			rtn = SifLoadModule(module,0,NULL);
			if (
				(loadModule("rom:SIO2MAN") < 0) ||
				(loadModule("rom:MCMAN") < 0)
			) {
				return 1;
			}
		}
	}
	
	// Initializing SDL2
	printf("[SDL2] Initializing ...\n");
	SDL_Init(SDL_INIT_VIDEO);
	
	printf("[SDL2] Creating window ...\n");
	int width = 640;
	int height = 480;
	SDL_Window * window = SDL_CreateWindow("game",
		0,0,
		width,height,
		0
	);
	
	printf("[SDL2] Grabbing surface ...\n");
	SDL_Surface * surface = SDL_GetWindowSurface(window);
	Uint16 * pixels = surface->pixels;
	Uint32 tracker = 0;
	
	// Draw-loop
	printf("[SDL2] Entering draw-loop ...\n");
	int x; int y;
	while (1) {
		// Just doing some fun animated pattern
		for (y = 0; y < height; y++) {
			for (x = 0; x < width; x++) {
				pixels[(((y * width) + x) + tracker) % (width * height)] = (tracker + (x ^ y)) + y;
			}
		}
		tracker = tracker + 3;
		SDL_UpdateWindowSurface(window);
		printf("\r"); fflush(stdout); // printf seems to fire an interrupt, which allows ps2link to reset the console, so we keep sending an "empty" debug message.
	}
	return 0;
}