jellyfin-server/MediaBrowser.Server.Startup.Common/Migrations/MigrateUserFolders.cs

using MediaBrowser.Controller;
using System;
using System.IO;
using System.Linq;

namespace MediaBrowser.Server.Startup.Common.Migrations
{
    public class MigrateUserFolders : IVersionMigration
    {
        private readonly IServerApplicationPaths _appPaths;

        public MigrateUserFolders(IServerApplicationPaths appPaths)
        {
            _appPaths = appPaths;
        }

        public void Run()
        {
            try
            {
                var rootPath = _appPaths.RootFolderPath;

                var folders = new DirectoryInfo(rootPath).EnumerateDirectories("*", SearchOption.TopDirectoryOnly).Where(i => !string.Equals(i.Name, "default", StringComparison.OrdinalIgnoreCase))
                    .ToList();

                foreach (var folder in folders)
                {
                    Directory.Delete(folder.FullName, true);
                }
            }
            catch (IOException)
            {
            }
        }
    }
}