osu-lazer/osu.Game/Database/IModelFileManager.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.

#nullable disable

using System.IO;

namespace osu.Game.Database
{
    public interface IModelFileManager<in TModel, in TFileModel>
        where TModel : class
        where TFileModel : class
    {
        /// <summary>
        /// Replace an existing file with a new version.
        /// </summary>
        /// <param name="model">The item to operate on.</param>
        /// <param name="file">The existing file to be replaced.</param>
        /// <param name="contents">The new file contents.</param>
        void ReplaceFile(TModel model, TFileModel file, Stream contents);

        /// <summary>
        /// Delete an existing file.
        /// </summary>
        /// <param name="model">The item to operate on.</param>
        /// <param name="file">The existing file to be deleted.</param>
        void DeleteFile(TModel model, TFileModel file);

        /// <summary>
        /// Add a new file. If the file already exists, it is overwritten.
        /// </summary>
        /// <param name="model">The item to operate on.</param>
        /// <param name="contents">The new file contents.</param>
        /// <param name="filename">The filename for the new file.</param>
        void AddFile(TModel model, Stream contents, string filename);
    }
}