#include <gccore.h>
#include <wiiuse/wpad.h>

#include <fat.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

static void *xfb = NULL;
static GXRModeObj *rmode = NULL;

//---------------------------------------------------------------------------------
int main(int argc, char **argv) {
//---------------------------------------------------------------------------------

	// Initialise the video system
	VIDEO_Init();

	// This function initialises the attached controllers
	WPAD_Init();

	// Obtain the preferred video mode from the system
	// This will correspond to the settings in the Wii menu
	rmode = VIDEO_GetPreferredMode(NULL);

	// Allocate memory for the display in the uncached region
	xfb = MEM_K0_TO_K1(SYS_AllocateFramebuffer(rmode));

	// Initialise the console, required for printf
	console_init(xfb,20,20,rmode->fbWidth,rmode->xfbHeight,rmode->fbWidth*VI_DISPLAY_PIX_SZ);

	// Set up the video registers with the chosen mode
	VIDEO_Configure(rmode);

	// Tell the video hardware where our display memory is
	VIDEO_SetNextFramebuffer(xfb);

	// Make the display visible
	VIDEO_SetBlack(FALSE);

	// Flush the video register changes to the hardware
	VIDEO_Flush();

	// Wait for Video setup to complete
	VIDEO_WaitVSync();
	if(rmode->viTVMode&VI_NON_INTERLACE) VIDEO_WaitVSync();


	// The console understands VT terminal escape codes
	// This positions the cursor on row 2, column 0
	// we can use variables for this with format codes too
	// e.g. printf ("\x1b[%d;%dH", row, column );
	printf("\x1b[2;0H");

	if (!fatInitDefault()) {
		printf("fatInitDefault failure: terminating\n");
		goto error;
	}

	DIR *pdir;
	struct dirent *pent;
	struct stat statbuf;

	pdir=opendir("/");

	if (!pdir){
		printf ("opendir() failure; terminating\n");
		goto error;
	}

	while ((pent=readdir(pdir))!=NULL) {
		stat(pent->d_name,&statbuf);
		if(strcmp(".", pent->d_name) == 0 || strcmp("..", pent->d_name) == 0)
			continue;
		if(S_ISDIR(statbuf.st_mode))
			printf("%s <dir>\n", pent->d_name);
		if(!(S_ISDIR(statbuf.st_mode)))
			printf("%s %lld\n", pent->d_name, statbuf.st_size);
	}
	closedir(pdir);

error:
	while(1) {

		// Call WPAD_ScanPads each loop, this reads the latest controller states
		WPAD_ScanPads();

		// WPAD_ButtonsDown tells us which buttons were pressed in this loop
		// this is a "one shot" state which will not fire again until the button has been released
		u32 pressed = WPAD_ButtonsDown(0);

		// We return to the launcher application via exit
		if ( pressed & WPAD_BUTTON_HOME ) exit(0);

		// Wait for the next frame
		VIDEO_WaitVSync();
	}

	return 0;
}
