osu/osu.Game/Online/ScoreDownloadTracker.cs

138 lines
4.4 KiB
C#

// 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;
using System.Linq;
using osu.Framework.Allocation;
using osu.Game.Database;
using osu.Game.Extensions;
using osu.Game.Online.API;
using osu.Game.Scoring;
#nullable enable
namespace osu.Game.Online
{
public class ScoreDownloadTracker : DownloadTracker<ScoreInfo>
{
[Resolved(CanBeNull = true)]
protected ScoreModelDownloader? Downloader { get; private set; }
private ArchiveDownloadRequest<IScoreInfo>? attachedRequest;
private IDisposable? realmSubscription;
[Resolved]
private RealmAccess realm { get; set; } = null!;
public ScoreDownloadTracker(ScoreInfo trackedItem)
: base(trackedItem)
{
}
protected override void LoadComplete()
{
base.LoadComplete();
if (Downloader == null)
return;
// Used to interact with manager classes that don't support interface types. Will eventually be replaced.
var scoreInfo = new ScoreInfo
{
ID = TrackedItem.ID,
OnlineID = TrackedItem.OnlineID
};
Downloader.DownloadBegan += downloadBegan;
Downloader.DownloadFailed += downloadFailed;
realmSubscription = realm.RegisterForNotifications(r => r.All<ScoreInfo>().Where(s => ((s.OnlineID > 0 && s.OnlineID == TrackedItem.OnlineID) || s.Hash == TrackedItem.Hash) && !s.DeletePending), (items, changes, ___) =>
{
if (items.Any())
Schedule(() => UpdateState(DownloadState.LocallyAvailable));
else
{
Schedule(() =>
{
UpdateState(DownloadState.NotDownloaded);
attachDownload(Downloader.GetExistingDownload(scoreInfo));
});
}
});
}
private void downloadBegan(ArchiveDownloadRequest<IScoreInfo> request) => Schedule(() =>
{
if (checkEquality(request.Model, TrackedItem))
attachDownload(request);
});
private void downloadFailed(ArchiveDownloadRequest<IScoreInfo> request) => Schedule(() =>
{
if (checkEquality(request.Model, TrackedItem))
attachDownload(null);
});
private void attachDownload(ArchiveDownloadRequest<IScoreInfo>? request)
{
if (attachedRequest != null)
{
attachedRequest.Failure -= onRequestFailure;
attachedRequest.DownloadProgressed -= onRequestProgress;
attachedRequest.Success -= onRequestSuccess;
}
attachedRequest = request;
if (attachedRequest != null)
{
if (attachedRequest.Progress == 1)
{
UpdateProgress(1);
UpdateState(DownloadState.Importing);
}
else
{
UpdateProgress(attachedRequest.Progress);
UpdateState(DownloadState.Downloading);
attachedRequest.Failure += onRequestFailure;
attachedRequest.DownloadProgressed += onRequestProgress;
attachedRequest.Success += onRequestSuccess;
}
}
else
{
UpdateState(DownloadState.NotDownloaded);
}
}
private void onRequestSuccess(string _) => Schedule(() => UpdateState(DownloadState.Importing));
private void onRequestProgress(float progress) => Schedule(() => UpdateProgress(progress));
private void onRequestFailure(Exception e) => Schedule(() => attachDownload(null));
private bool checkEquality(IScoreInfo x, IScoreInfo y) => x.MatchesOnlineID(y);
#region Disposal
protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
attachDownload(null);
realmSubscription?.Dispose();
if (Downloader != null)
{
Downloader.DownloadBegan -= downloadBegan;
Downloader.DownloadFailed -= downloadFailed;
}
}
#endregion
}
}