!7

sclass YouTubeDownloader extends DynModule {
  transient JTextArea ta;
  transient JTextField tfURL, tfDest;
  transient JButton btnGo;
  
  start {
    doEvery(1000, r updateMe);
  }
  
  visualize {
    tfURL = jtextfield("https://www.youtube.com/watch?v=YYOKMUTTDdA");
    
    // Full paste
    componentPopupMenu_clear(tfURL);
    componentPopupMenuItem(tfURL, "Paste", r { tfURL.selectAll(); tfURL.paste() });
    
    tfDest = jtextfield(desktopDir());
    onEnter(tfURL, r go);
    ret northAndCenterWithMargins(
      vstackWithSpacing(
        centerAndEast(withLabel("Video URL to download:", tfURL), 
          withLeftMargin(btnGo = jbutton("Download", r go))),
        withLabel("Destination directory:", tfDest)),
      ta = typeWriterTextArea());
  }
  
  void unvisualize() { ta = null; }
  
  void update {
    if (ta != null) setText(ta, localPrintLog());
  }
  
  void go {
    thread "YouTube Download" {
      temp tempDisableButton(btnGo);
      installOrUpdateYouTubeDL();
      S url = formatYouTubeURL_long(gtt(tfURL));
      File dir = newFile(gtt(tfDest));
      downloadImpl(url, dir);
      print("Done (possibly)");
    }
  }
  
  S downloadImpl() {
    ret youtubeDownloadVideo(url, dir);
  }
}