@ECHO OFF


SET BaseDir=c:Users
SET BkpsDir=d:Backup


IF NOT EXIST "7za.exe" GOTO ExitError
IF NOT EXIST "nircmd.exe" GOTO ExitError
SET TimeFile=%temp%tmpCloneFileTimeFile.bkp
SET OutputFile=%temp%tmpOutputFile.bkp

REM create a temporary file
copy /y NUL "%TimeFile%" 1>NUL


CALL :CompressDirIfChanged PublicMusic PublicMusic.7z
CALL :CompressDirIfChanged DragosFavorites DragosFavorites.7z


DEL "%TimeFile%" /F /Q >nul 2>nul
DEL "%OutputFile%" /F /Q >nul 2>nul

ECHO.
ECHO SUCCESS
ECHO.
PAUSE
EXIT
goto:eof


REM call :CompressDirIfChanged sourceDirRelativeToBaseDir ArchiveName
:CompressDirIfChanged
    SET BkpSrc="%~1"
    SET ArchDest=%BkpsDir%%~2
    CD "%BaseDir%"
    IF EXIST "%ArchDest%" (
        nircmd.exe clonefiletime "%ArchDest%" "%TimeFile%"
        7za.exe u -up1q0r2x2y2z1w2 -mx=9 "%ArchDest%" "%BkpSrc%" | FINDSTR /b "Items to compress:" 1>"%OutputFile%"
        IF errorlevel 1 GOTO ExitError
        REM FINDSTR /b "Items to compress: *0" "c:UsersDragosAppDataLocalTemptmpOutputFile" 1>NUL
        FINDSTR /b "Items to compress: *0" "%OutputFile%" 1>NUL
        IF errorlevel 1 (
            ECHO - updating %ArchDest%
        ) ELSE (
            ECHO - no changes in %BkpSrc%, restoring Last Modified Time
            nircmd.exe clonefiletime "%TimeFile%" "%ArchDest%"
        )
    ) ELSE (
        ECHO - creating %ArchDest%
        7za.exe a -aoa -mx=9 "%ArchDest%" "%BkpSrc%" 1>nul
        IF errorlevel 1 GOTO ExitError
    )
goto:eof

:ExitError
    ECHO ERROR!
    PAUSE
    EXIT 1
goto:eof