@echo off
setlocal enabledelayedexpansion

set "SOURCE_DIR=D:\cinema\cringe\Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e 2"
set "VIDEO_DIR=%SOURCE_DIR%"
set "AUDIO_DIR=%SOURCE_DIR%\Sound"
set "OUTPUT_DIR=%SOURCE_DIR%\Merged"

mkdir "%OUTPUT_DIR%"

echo Processing episodes...

:: Process each audio file
for %%A in ('dir "%AUDIO_DIR%\*.mka" /b') do (
    set "AUDIO_FULL=%%A"
    
    :: Get just the filename (already from dir /b)
    set "AUDIO_NAME=!AUDIO_FULL!"
    
    :: Construct the corresponding video filename by replacing .mka with .mkv
    set "VIDEO_NAME=!AUDIO_NAME:.mka=.mkv!"
    
    set "VIDEO_PATH=%VIDEO_DIR%\!VIDEO_NAME!"
    set "AUDIO_PATH=%AUDIO_DIR%\!AUDIO_NAME!"
    set "OUT_FILE=%OUTPUT_DIR%\!VIDEO_NAME!"
    
    if exist "!VIDEO_PATH!" (
        echo Merging: !AUDIO_NAME!
        ffmpeg -hide_banner -loglevel error -i "!VIDEO_PATH!" -i "!AUDIO_PATH!" ^
            -c copy -map 0:v:0 -map 1:a:0 "!OUT_FILE!"
        
        if errorlevel 1 (
            echo ERROR: !AUDIO_NAME!
        ) else (
            echo OK: !AUDIO_NAME!
        )
    ) else (
        echo Video not found: !VIDEO_NAME!
    )
)

echo.
echo ==========================================
echo Done! Merged files are in: "%OUTPUT_DIR%"
echo ==========================================
pause