osu-lazer/osu.Game/Database/LegacyScoreExporter.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using System.IO;
using System.Linq;
using System.Threading.Tasks;
using osu.Framework.Platform;
using osu.Game.Extensions;
using osu.Game.Overlays;
using osu.Game.Scoring;

namespace osu.Game.Database
{
    public class LegacyScoreExporter : LegacyModelExporter<ScoreInfo>
    {
        public LegacyScoreExporter(Storage storage, RealmAccess realm, INotificationOverlay? notifications = null)
            : base(storage, realm, notifications)
        {
        }

        protected override string FileExtension => ".osr";

        public override async Task ExportToStreamAsync(ScoreInfo uuid, Stream stream)
        {
            await Task.Run(() =>
            {
                RealmAccess.Run(r =>
                {
                    ScoreInfo model = r.Find<ScoreInfo>(uuid.ID);

                    Filename = $"{model.GetDisplayString().GetValidFilename()}{FileExtension}";

                    var file = model.Files.SingleOrDefault();
                    if (file == null)
                        return;

                    using (var inputStream = UserFileStorage.GetStream(file.File.GetStoragePath()))
                        inputStream.CopyTo(stream);
                });
            }).ContinueWith(OnComplete);
        }
    }
}