mirror of https://github.com/ppy/osu
131 lines
4.3 KiB
C#
131 lines
4.3 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.Linq;
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using osu.Framework.Allocation;
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using osu.Game.Beatmaps;
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using osu.Game.Database;
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using osu.Game.Online.API;
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namespace osu.Game.Online
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{
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public class BeatmapDownloadTracker : DownloadTracker<IBeatmapSetInfo>
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{
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[Resolved(CanBeNull = true)]
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protected BeatmapModelDownloader? Downloader { get; private set; }
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private ArchiveDownloadRequest<IBeatmapSetInfo>? attachedRequest;
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private IDisposable? realmSubscription;
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[Resolved]
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private RealmAccess realm { get; set; } = null!;
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public BeatmapDownloadTracker(IBeatmapSetInfo trackedItem)
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: base(trackedItem)
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{
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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if (Downloader == null)
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return;
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Downloader.DownloadBegan += downloadBegan;
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Downloader.DownloadFailed += downloadFailed;
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// Used to interact with manager classes that don't support interface types. Will eventually be replaced.
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var beatmapSetInfo = new BeatmapSetInfo { OnlineID = TrackedItem.OnlineID };
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realmSubscription = realm.RegisterForNotifications(r => r.All<BeatmapSetInfo>().Where(s => s.OnlineID == TrackedItem.OnlineID && !s.DeletePending), (items, _, _) =>
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{
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if (items.Any())
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Schedule(() => UpdateState(DownloadState.LocallyAvailable));
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else
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{
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Schedule(() =>
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{
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UpdateState(DownloadState.NotDownloaded);
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attachDownload(Downloader.GetExistingDownload(beatmapSetInfo));
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});
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}
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});
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}
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private void downloadBegan(ArchiveDownloadRequest<IBeatmapSetInfo> request) => Schedule(() =>
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{
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if (checkEquality(request.Model, TrackedItem))
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attachDownload(request);
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});
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private void downloadFailed(ArchiveDownloadRequest<IBeatmapSetInfo> request) => Schedule(() =>
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{
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if (checkEquality(request.Model, TrackedItem))
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attachDownload(null);
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});
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private void attachDownload(ArchiveDownloadRequest<IBeatmapSetInfo>? request)
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{
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if (attachedRequest != null)
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{
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attachedRequest.Failure -= onRequestFailure;
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attachedRequest.DownloadProgressed -= onRequestProgress;
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attachedRequest.Success -= onRequestSuccess;
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}
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attachedRequest = request;
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if (attachedRequest != null)
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{
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if (attachedRequest.Progress == 1)
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{
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UpdateProgress(1);
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UpdateState(DownloadState.Importing);
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}
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else
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{
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UpdateProgress(attachedRequest.Progress);
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UpdateState(DownloadState.Downloading);
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attachedRequest.Failure += onRequestFailure;
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attachedRequest.DownloadProgressed += onRequestProgress;
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attachedRequest.Success += onRequestSuccess;
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}
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}
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else
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{
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UpdateState(DownloadState.NotDownloaded);
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}
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}
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private void onRequestSuccess(string _) => Schedule(() => UpdateState(DownloadState.Importing));
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private void onRequestProgress(float progress) => Schedule(() => UpdateProgress(progress));
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private void onRequestFailure(Exception e) => Schedule(() => attachDownload(null));
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private bool checkEquality(IBeatmapSetInfo x, IBeatmapSetInfo y) => x.OnlineID == y.OnlineID;
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#region Disposal
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protected override void Dispose(bool isDisposing)
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{
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base.Dispose(isDisposing);
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attachDownload(null);
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realmSubscription?.Dispose();
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if (Downloader != null)
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{
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Downloader.DownloadBegan -= downloadBegan;
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Downloader.DownloadFailed -= downloadFailed;
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}
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}
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#endregion
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}
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}
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