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58 lines
1.9 KiB
C#
58 lines
1.9 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Collections.Generic;
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using JetBrains.Annotations;
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using osu.Game.Beatmaps;
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using osu.Game.Database;
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using Realms;
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namespace osu.Game.Collections
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{
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/// <summary>
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/// A collection of beatmaps grouped by a name.
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/// </summary>
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public class BeatmapCollection : RealmObject, IHasGuidPrimaryKey
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{
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[PrimaryKey]
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public Guid ID { get; set; }
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/// <summary>
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/// The collection's name.
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/// </summary>
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public string Name { get; set; } = string.Empty;
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/// <summary>
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/// The <see cref="BeatmapInfo.MD5Hash"/>es of beatmaps contained by the collection.
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/// </summary>
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/// <remarks>
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/// We store as hashes rather than references to <see cref="BeatmapInfo"/>s to allow collections to maintain
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/// references to beatmaps even if they are removed. This helps with cases like importing collections before
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/// importing the beatmaps they contain, or when sharing collections between users.
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///
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/// This can probably change in the future as we build the system up.
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/// </remarks>
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public IList<string> BeatmapMD5Hashes { get; } = null!;
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/// <summary>
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/// The date when this collection was last modified.
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/// </summary>
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public DateTimeOffset LastModified { get; set; }
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public BeatmapCollection(string? name = null, IList<string>? beatmapMD5Hashes = null)
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{
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ID = Guid.NewGuid();
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Name = name ?? string.Empty;
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BeatmapMD5Hashes = beatmapMD5Hashes ?? new List<string>();
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LastModified = DateTimeOffset.UtcNow;
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}
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[UsedImplicitly]
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private BeatmapCollection()
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{
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}
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}
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}
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