/*
//
// Copyright (C) 2006-2025 Jean-François DEL NERO
//
// This file is part of the HxCFloppyEmulator library
//
// HxCFloppyEmulator may be used and distributed without restriction provided
// that this copyright statement is not removed from the file and that any
// derivative work contains the original copyright notice and the associated
// disclaimer.
//
// HxCFloppyEmulator is free software; you can redistribute it
// and/or modify  it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// HxCFloppyEmulator is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//   See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with HxCFloppyEmulator; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
//
*/
///////////////////////////////////////////////////////////////////////////////////
//-------------------------------------------------------------------------------//
//-------------------------------------------------------------------------------//
//-----------H----H--X----X-----CCCCC----22222----0000-----0000------11----------//
//----------H----H----X-X-----C--------------2---0----0---0----0--1--1-----------//
//---------HHHHHH-----X------C----------22222---0----0---0----0-----1------------//
//--------H----H----X--X----C----------2-------0----0---0----0-----1-------------//
//-------H----H---X-----X---CCCCC-----222222----0000-----0000----1111------------//
//-------------------------------------------------------------------------------//
//----------------------------------------------------- http://hxc2001.free.fr --//
///////////////////////////////////////////////////////////////////////////////////
// File : snes_smc_loader.c
// Contains: SMC rom floppy image loader
//
// Written by: Jean-François DEL NERO
//
// Change History (most recent first):
///////////////////////////////////////////////////////////////////////////////////

#include <string.h>
#include <stdlib.h>
#include <stdio.h>

#include "types.h"

#include "internal_libhxcfe.h"
#include "libhxcfe.h"

#include "floppy_loader.h"
#include "floppy_utils.h"

#include "snes_smc_loader.h"
#include "../fat12floppy_loader/fat12floppy_loader.h"

#include "../fat12floppy_loader/fat12.h"

#include "libhxcadaptor.h"

extern unsigned char msdos_bootsector[];

int is_gamedoctor_file(char * imgfile)
{
	char * tmp_ptr;

	if( hxc_checkfileext(imgfile,"078",SYS_PATH_TYPE) || \
		hxc_checkfileext(imgfile,"068",SYS_PATH_TYPE) || \
		hxc_checkfileext(imgfile,"058",SYS_PATH_TYPE) || \
		hxc_checkfileext(imgfile,"048",SYS_PATH_TYPE) || \
		hxc_checkfileext(imgfile,"gd3",SYS_PATH_TYPE) || \
		hxc_checkfileext(imgfile,"gd7",SYS_PATH_TYPE) )
	{
		tmp_ptr = hxc_getfilenamebase(imgfile,NULL,SYS_PATH_TYPE);
		if(tmp_ptr)
		{
			if( (tmp_ptr[0] == 's' || tmp_ptr[0] == 'S' ) && \
				(tmp_ptr[1] == 'f' || tmp_ptr[1] == 'F' ) )
			{
				return HXCFE_VALIDFILE;
			}
		}
	}

	return HXCFE_BADFILE;
}

int snes_smc_libIsValidDiskFile( HXCFE_IMGLDR * imgldr_ctx, HXCFE_IMGLDR_FILEINFOS * imgfile )
{
	int fileok;

	fileok=1;

	imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"snes_smc_libIsValidDiskFile");

	if(imgfile)
	{
		if( imgfile->file_header[8]==0xaa && imgfile->file_header[9]==0xbb )
		{
			switch( imgfile->file_header[10] )
			{
				case 1:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : Super Magic Card saver data");
					break;
				case 2:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : Magic Griffin program (PC-Engine)");
					break;
				case 3:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : Magic Griffin SRAM data");
					break;
				case 4:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : SNES program");
					break;
				case 5:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : SWC & SMC password, SRAM data");
					break;
				case 6:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : Mega Drive program");
					break;
				case 7:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : SMD SRAM data");
					break;
				case 8:
					imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : SWC & SMC saver data");
					break;
				default:
					fileok=0;
					break;
			}

			if(fileok)
			{
				imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"snes_smc_libIsValidDiskFile : SMC/SMD file !");
				return HXCFE_VALIDFILE;
			}
			else
			{
				imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"snes_smc_libIsValidDiskFile : non SMC/SMD file !");
				return HXCFE_BADFILE;
			}
		}

		if(!strncmp((char*)&imgfile->file_header[8],"SUPERUFO",8))
		{
			imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : SUPERUFO SMC");
			return HXCFE_VALIDFILE;
		}

		if( hxc_checkfileext(imgfile->path,"smc",SYS_PATH_TYPE) )
		{
			imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : Super Pro Fighter SMC?");
			return HXCFE_VALIDFILE;
		}

		if( is_gamedoctor_file(imgfile->path) == HXCFE_VALIDFILE )
		{
			imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"snes_smc_libIsValidDiskFile : File type : Game Doctor SF3/SF7");
			return HXCFE_VALIDFILE;
		}

		imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"snes_smc_libIsValidDiskFile : non SMC/SMD file !");
		return HXCFE_BADFILE;
	}

	return HXCFE_BADPARAMETER;
}

int snes_smc_libLoad_DiskFile(HXCFE_IMGLDR * imgldr_ctx,HXCFE_FLOPPY * floppydisk,char * imgfile,void * parameters)
{
	imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"snes_smc_libLoad_DiskFile %s",imgfile);

	if( is_gamedoctor_file(imgfile) == HXCFE_VALIDFILE )
	{
		return FAT12FLOPPY_libLoad_DiskFile(imgldr_ctx,floppydisk,imgfile,".fat1440");
	}
	else
	{
		return FAT12FLOPPY_libLoad_DiskFile(imgldr_ctx,floppydisk,imgfile,".fat4572");
	}
}

int snes_smc_libGetPluginInfo(HXCFE_IMGLDR * imgldr_ctx,uint32_t infotype,void * returnvalue)
{
	static const char plug_id[]="SNES_SMC";
	static const char plug_desc[]="Super famicom SMC / Game Doctor Loader";
	static const char plug_ext[]="smc";

	plugins_ptr plug_funcs=
	{
		(ISVALIDDISKFILE)   snes_smc_libIsValidDiskFile,
		(LOADDISKFILE)      snes_smc_libLoad_DiskFile,
		(WRITEDISKFILE)     0,
		(GETPLUGININFOS)    snes_smc_libGetPluginInfo
	};

	return libGetPluginInfo(
			imgldr_ctx,
			infotype,
			returnvalue,
			plug_id,
			plug_desc,
			&plug_funcs,
			plug_ext
			);
}
