#include <stdio.h>
#include <ogcsys.h>
#include <string.h>
#include <malloc.h>

#include "patches/patchcode.h"
#include "apploader.h"
#include "wdvd.h"
#include "wpad.h"
#include "disc.h"
#include "alternatedol.h"
#include "fstfile.h"
#include "settings/cfg.h"
#include "gecko.h"
#include "patches/wip.h"
#include "patches/dolpatcher.h"
#include "patches/gamepatches.h"

extern bool geckoinit;

/* Apploader function pointers */
typedef int   (*app_main)(void **dst, int *size, int *offset);
typedef void  (*app_init)(void (*report)(const char *fmt, ...));
typedef void *(*app_final)();
typedef void  (*app_entry)(void (**init)(void (*report)(const char *fmt, ...)), int (**main)(), void *(**final)());

/* Apploader pointers */
static u8 *appldr = (u8 *)0x81200000;


/* Constants */
#define APPLDR_OFFSET	0x2440

/* Variables */
static u32 buffer[0x20] ATTRIBUTE_ALIGN(32);

static void __noprint(const char *fmt, ...) { }

void gamepatches(void * dst, int len, u8 videoSelected, u8 patchcountrystring, u8 vipatch, u8 cheat)
{
    VideoModePatcher(dst, len, videoSelected);

    if(cheat)
        dogamehooks(dst,len);

    if (vipatch)
        vidolpatcher(dst,len);

    /*LANGUAGE PATCH - FISHEARS*/
    langpatcher(dst,len);

    /*Thanks to WiiPower*/
    if (patchcountrystring == 1)
        PatchCountryStrings(dst, len);

    NSMBPatch(dst, len);

    do_wip_code((u8 *) dst, len);

    if (fix002 == 2)
        Anti_002_fix(dst, len);
}

s32 Apploader_Run(entry_point *entry, u8 cheat, u8 videoSelected, u8 vipatch, u8 patchcountrystring, u8 error002fix, u8 alternatedol, u32 alternatedoloffset) {
    app_entry appldr_entry;
    app_init  appldr_init;
    app_main  appldr_main;
    app_final appldr_final;

    u32 appldr_len;
    s32 ret;
	gprintf("\nApploader_Run() started\n");

	//u32 geckoattached = usb_isgeckoalive(EXI_CHANNEL_1);
	//if (geckoattached)usb_flush(EXI_CHANNEL_1);
	geckoinit = InitGecko();

    /* Read apploader header */
    ret = WDVD_Read(buffer, 0x20, APPLDR_OFFSET);
    if (ret < 0)
        return ret;

    /* Calculate apploader length */
    appldr_len = buffer[5] + buffer[6];

    /* Read apploader code */
    ret = WDVD_Read(appldr, appldr_len, APPLDR_OFFSET + 0x20);
    if (ret < 0)
        return ret;

	/* Set apploader entry function */
    appldr_entry = (app_entry)buffer[4];

    /* Call apploader entry */
    appldr_entry(&appldr_init, &appldr_main, &appldr_final);

    /* Initialize apploader */
    appldr_init(__noprint);

    if (error002fix!=0)
    {
        /* ERROR 002 fix (thanks to WiiPower for sharing this)*/
		*(u32 *)0x80003188 = *(u32 *)0x80003140;
    }

    for (;;)
    {
        void *dst = NULL;
        int len = 0, offset = 0;

        /* Run apploader main function */
        ret = appldr_main(&dst, &len, &offset);
        if (!ret)
            break;

        /* Read data from DVD */
        WDVD_Read(dst, len, (u64)(offset << 2));

        gamepatches(dst, len, videoSelected, patchcountrystring, vipatch, cheat);
        DCFlushRange(dst, len);
    }

    *entry = appldr_final();

    /** Load alternate dol if set **/
    if (alternatedol == 1)
    {
        wip_reset_counter();
        void *dolbuffer = NULL;
        int dollen = 0;

        bool dolloaded = Load_Dol(&dolbuffer, &dollen, Settings.dolpath, videoSelected, patchcountrystring, vipatch, cheat);
        if (dolloaded)
        {
            *entry = (entry_point) load_dol_image(dolbuffer);
        }

        if(dolbuffer)
            free(dolbuffer);
    }
    else if (alternatedol == 2)
    {
        wip_reset_counter();
        FST_ENTRY *fst = (FST_ENTRY *)*(u32 *)0x80000038;

        *entry = (entry_point) Load_Dol_from_disc(fst[alternatedoloffset].fileoffset, videoSelected, patchcountrystring, vipatch, cheat);

        if (*entry == 0)
            SYS_ResetSystem(SYS_RETURNTOMENU, 0, 0);
    }

    return 0;
}