@echo off
cls

set "TARGET=%USERPROFILE%\Projekcija"
set "BACKUP_DIR=%TARGET%\backup"

:: Najprej preveri ali obstaja mapa Projekcija na USB (D:)
IF EXIST "D:\Projekcija" (
    echo Mapa 'Projekcija' na USB pogonu obstaja.
    
    :: 1. Ustvari backup obstoječe baze na namizju, če obstaja
    IF EXIST "%TARGET%\songs.db" (
        echo Ustvarjam backup baze...
        if not exist "%BACKUP_DIR%" mkdir "%BACKUP_DIR%"
        
        :: Pridobi timestamp (YYYYMMDD_HHMMSS)
        for /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%c%%a%%b)
        for /f "tokens=1-2 delims=: " %%a in ('time /t') do (set mytime=%%a%%b)
        set "TS=%date:~10,4%%date:~4,2%%date:~7,2%_%time:~0,2%%time:~3,2%%time:~6,2%"
        set "TS=%TS: =0%"
        
        set "CURRENT_BACKUP=%BACKUP_DIR%\backup_%TS%"
        mkdir "%CURRENT_BACKUP%"
        
        if exist "%TARGET%\settings.conf" copy "%TARGET%\settings.conf" "%CURRENT_BACKUP%\" >nul
        if exist "%TARGET%\songs.db" copy "%TARGET%\songs.db" "%CURRENT_BACKUP%\" >nul
        
        echo Backup ustvarjen v: %CURRENT_BACKUP%
        
        :: 2. Ohrani samo zadnjih 6 backupov (pobriši starejše)
        pushd "%BACKUP_DIR%"
        for /f "skip=6 delims=" %%F in ('dir /b /ad /o-n backup_*') do (
            echo Brisanje starega backupa: %%F
            rd /s /q "%%F"
        )
        popd
    )

    echo Kopiram nove datoteke z USB na namizje...
    :: Kopiranje z robocopy (/E - vse podmape, /XO - samo novejše datoteke, da ne povozimo backupa če ni treba)
    robocopy "D:\Projekcija" "%TARGET%" /E

    echo Zagon projector.py ...
    pushd "%TARGET%"
    py "%~dp0projector.py"
    popd
) ELSE (
    cls
    echo USB ključek ni najden. Zagon lokalne verzije...
    echo Zagon projector.py ...
    pushd "%TARGET%"
    py "%~dp0projector.py"
    popd
)

pause