@echo off
setLocal EnableDelayedExpansion

:: ------------------------ SET VARIABLES (don't touch) ----------------------------
set LauncherFolder="%userprofile%\Documents\Rockstar Games\Launcher"

:: ------------------------ USER OPTIONS ----------------------------------------------
:: gamefolder will be replaced by actual game folder. BUT, you can put a completely custom path here, like "F:\my backups\gta_backup" , BUT please use " marks if your path has spaces!
set backupfolder=gamefolder\_backup
:: ----------------------------------------------------------------------------------------


:Start
:GetGameFolder
if exist %LauncherFolder% (
cd /d %LauncherFolder%
for /f tokens^=2^ delims^=^" %%i in ('type launcher.log ^|find "GTA5.exe"') do set "exepath=%%i"
if "!exepath!"=="" ( echo ERROR: COULD NOT DETECT GAMEFOLDER & pause & goto :eof )
set gamepath="!exepath:\GTA5.exe=!"
if exist !gamepath! ( set "gamefolder=!gamepath!" ) else ( echo ERROR: COULD NOT DETECT GAMEFOLDER & pause & goto :eof )
echo Detected Game Folder !gamepath! & echo.
) else ( echo Warning: CAN'T FIND LAUNCHER FOLDER %LauncherFolder% & pause & goto :eof )

:GetVersion
set exepath2=!exepath:\=\\!
for /f "tokens=*" %%V in ( ' wmic datafile where "name='!exepath2!'" get version ' ) do (

	for /F "delims=" %%A IN ("%%V") do (
		if not "%%V"=="" (
			if not "%%V"=="Version" set "version=%%V"	
		)
	)
)
set "version=%version: =%"
if '!version!'=='' ( echo ERROR: COULD NOT DETECT VERSION & pause & goto :eof ) else ( echo Game Version: %version% )

:GetPlatform
cd /d %LauncherFolder%
	if exist launcher.log (
	for /f "tokens=*" %%i in ('type launcher.log ^|find "Running in Steam mode"') do set "Is_Steam=true"
	) else (
	echo ERROR: CAN'T FIND %cd%\launcher.log
)

:SetFileList
if defined is_steam ( set files_tocopy=GTA5.exe,GTAVLauncher.exe,steam_api64.dll,update\update.rpf ) else ( set files_tocopy=GTA5.exe,GTAVLauncher.exe,update\update.rpf )

:CheckBackupFolder
set backupfolder=%backupfolder:gamefolder=!gamefolder!%
set backupfolder=%backupfolder:"=%
set backupfolder="%backupfolder%"
if exist %backupfolder% (
	echo. & echo Backup Folder %backupfolder%
	set bkup_count=0
	cd /d %backupfolder%
	for /f "tokens=* delims= " %%A in ( ' dir /b /-p /a:d /o:-n /t:w *.* ' ) do (	
		set "var=" & for /f "delims=.0123456789" %%i in ('echo %%A') do set var=%%i
		if "!var!"=="" (
			set "var="
			set /a bkup_count=!bkup_count!+1
			if not "!backups!"=="" ( set "backups=!backups!,%%A") else ( set "backups=%%A")
			echo found backup %%A
		)
	)
	if !bkup_count!==0 echo NO BACKUPS HAVE BEEN FOUND. EXITING. & pause & goto :eof
) else ( echo ERROR: CAN'T FIND BACKUPFOLDER & pause & goto :eof )

:CheckGameFiles
echo. & echo Game Folder files: & echo.
echo GTA5.exe           = %version%   (actual version)
for %%F in (%files_tocopy%) do (
	if /i not %%F==gta5.exe (
		for /f "delims=" %%i in ('certutil -v -hashfile %gamefolder%\%%F MD5 ^| find /i /v "md5" ^| find /i /v "certutil"') do set "hash1=%%i"
		CALL :CompareFileToBackups %%F
	)
)

:CompareAllBackups
set bkup1=
cd /d %backupfolder%
echo. & echo. & echo Comparing Files Between Backups...
for %%A in (%backups%) do (
	if '!bkup1!'=='' ( set bkup1=%%A ) else (
	CALL :Compare_bkup2bkup !bkup1! %%A
	set bkup1=%%A
	)
)

:Finished
echo. & echo.
echo --------------------------------------------------
echo Finished.
echo --------------------------------------------------
echo.
pause
goto :eof

:Compare_bkup2bkup
cd /d %backupfolder%
echo.
echo --------------------------------------------------
echo %1 ^<=^> %2
echo.
for %%F in (%files_tocopy%) do (
	set hash1=
	set hash2=
	for /f "delims=" %%i in ('certutil -v -hashfile %1\%%F MD5 ^| find /i /v "md5" ^| find /i /v "certutil"') do set "hash1=%%i"
	for /f "delims=" %%i in ('certutil -v -hashfile %2\%%F MD5 ^| find /i /v "md5" ^| find /i /v "certutil"') do set "hash2=%%i"
	if !hash1!==!hash2! (
	echo %%F           = %%F
	) else (
	echo %%F         ^^!= %%F
	)
)
goto :eof

:CompareFileToBackups
cd /d %backupfolder%
for %%A in (%backups%) do (
	for /f "delims=" %%i in ('certutil -v -hashfile %backupfolder%\%%A\%1 MD5 ^| find /i /v "md5" ^| find /i /v "certutil"') do set "hash2=%%i"
	if !hash1!==!hash2! (
	echo %1   = %%A   (as compared to backups^)
	goto :eof
	)
)
echo %1   = unknown
goto :eof