mirror of https://github.com/ppy/osu
98 lines
3.9 KiB
C#
98 lines
3.9 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using Microsoft.EntityFrameworkCore;
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using osu.Game.Database;
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namespace osu.Game.Beatmaps
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{
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/// <summary>
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/// Handles the storage and retrieval of Beatmaps/BeatmapSets to the database backing
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/// </summary>
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public class BeatmapStore : MutableDatabaseBackedStore<BeatmapSetInfo>
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{
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public event Action<BeatmapInfo> BeatmapHidden;
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public event Action<BeatmapInfo> BeatmapRestored;
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public BeatmapStore(IDatabaseContextFactory factory)
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: base(factory)
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{
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}
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/// <summary>
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/// Hide a <see cref="BeatmapInfo"/> in the database.
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/// </summary>
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/// <param name="beatmap">The beatmap to hide.</param>
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/// <returns>Whether the beatmap's <see cref="BeatmapInfo.Hidden"/> was changed.</returns>
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public bool Hide(BeatmapInfo beatmap)
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{
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using (ContextFactory.GetForWrite())
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{
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Refresh(ref beatmap, Beatmaps);
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if (beatmap.Hidden) return false;
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beatmap.Hidden = true;
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}
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BeatmapHidden?.Invoke(beatmap);
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return true;
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}
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/// <summary>
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/// Restore a previously hidden <see cref="BeatmapInfo"/>.
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/// </summary>
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/// <param name="beatmap">The beatmap to restore.</param>
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/// <returns>Whether the beatmap's <see cref="BeatmapInfo.Hidden"/> was changed.</returns>
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public bool Restore(BeatmapInfo beatmap)
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{
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using (ContextFactory.GetForWrite())
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{
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Refresh(ref beatmap, Beatmaps);
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if (!beatmap.Hidden) return false;
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beatmap.Hidden = false;
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}
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BeatmapRestored?.Invoke(beatmap);
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return true;
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}
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protected override IQueryable<BeatmapSetInfo> AddIncludesForDeletion(IQueryable<BeatmapSetInfo> query) =>
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base.AddIncludesForDeletion(query)
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.Include(s => s.Beatmaps).ThenInclude(b => b.Metadata)
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.Include(s => s.Beatmaps).ThenInclude(b => b.BaseDifficulty)
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.Include(s => s.Metadata);
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protected override IQueryable<BeatmapSetInfo> AddIncludesForConsumption(IQueryable<BeatmapSetInfo> query) =>
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base.AddIncludesForConsumption(query)
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.Include(s => s.Metadata)
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.Include(s => s.Beatmaps).ThenInclude(s => s.Ruleset)
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.Include(s => s.Beatmaps).ThenInclude(b => b.BaseDifficulty)
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.Include(s => s.Beatmaps).ThenInclude(b => b.Metadata)
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.Include(s => s.Files).ThenInclude(f => f.FileInfo);
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protected override void Purge(List<BeatmapSetInfo> items, OsuDbContext context)
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{
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// metadata is M-N so we can't rely on cascades
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context.BeatmapMetadata.RemoveRange(items.Select(s => s.Metadata));
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context.BeatmapMetadata.RemoveRange(items.SelectMany(s => s.Beatmaps.Select(b => b.Metadata).Where(m => m != null)));
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// todo: we can probably make cascades work here with a FK in BeatmapDifficulty. just make to make it work correctly.
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context.BeatmapDifficulty.RemoveRange(items.SelectMany(s => s.Beatmaps.Select(b => b.BaseDifficulty)));
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base.Purge(items, context);
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}
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public IQueryable<BeatmapInfo> Beatmaps =>
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ContextFactory.Get().BeatmapInfo
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.Include(b => b.BeatmapSet).ThenInclude(s => s.Metadata)
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.Include(b => b.BeatmapSet).ThenInclude(s => s.Files).ThenInclude(f => f.FileInfo)
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.Include(b => b.Metadata)
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.Include(b => b.Ruleset)
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.Include(b => b.BaseDifficulty);
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}
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}
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