google script to list all subfolder content of a particular folder

listfiles_google_drive.js

function listFolders(folder) {

   var sheet = SpreadsheetApp.getActiveSheet();
   sheet.appendRow(["Name", "Folder", "Date", "Size", "URL", "Download", "Description", "Type"]);
   var folder = DriveApp.getFolderById("0BxGcFSIReuGfOTJ0dTloY2xWS0E");

  var subfolders = folder.getFolders();
  
  while (subfolders.hasNext()) {
       //Logger.log(folder);
    var name = subfolders.next();
    while (subfolders.hasNext()) {
       //Logger.log(folder);
    var name = subfolders.next();

    var files = name.getFiles();

    var cnt = 0;
    var file;

    while (files.hasNext()) {
        var file = files.next();
        cnt++;

        Logger.log(file);
        Logger.log(cnt);

            data = [
                file.getName(),
                name, //folder name
                file.getDateCreated(),
                file.getSize(),
                file.getUrl(),
                "https://docs.google.com/uc?export=download&confirm=no_antivirus&id=" + file.getId(),
                file.getDescription(),
                file.getMimeType(),
            ];

            sheet.appendRow(data);        

    };
  }
  }   
}