@echo off
setlocal enabledelayedexpansion

:: Look for all .webm files in the directory
for %%f in (*.webm) do (
    set "filename=%%~nf"
    set "fullfile=%%f"

    :: Use string manipulation to extract the audio URL
    for /f "tokens=2 delims=[]" %%a in ("!filename!") do (
        set "tag=%%a"
        for /f "tokens=2 delims==" %%b in ("!tag!") do (
            set "escaped_url=%%b"
            set "url=!escaped_url:%%2F=/!"

            :: Decode %2F to / (you can add more decode cases if needed)
            set "url=!url:%%2E=.!"
            set "url=!url:%%3A=:!"
            set "url=!url:%%3F=?!"
            set "url=!url:%%26=&!"
            set "url=!url:%%3D==!"

            :: Generate base name (remove [sound=...] tag)
            set "basename=%%~nf"
            for /f "tokens=1 delims=[" %%c in ("!basename!") do (
                set "basename=%%c"
            )

            echo Processing !fullfile! with audio from !url!

            :: Download the audio
            curl -L -o "temp_audio.mp3" "!url!"

            :: Combine video and audio
            ffmpeg -y -i "!fullfile!" -i "temp_audio.mp3" -c:v copy -c:a aac -shortest "!basename!.mp4"

            del temp_audio.mp3
        )
    )
)

echo Done.
pause