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SoloStatisticsWatcher.cs
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SoloStatisticsWatcher.cs
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// 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.Collections.Generic;
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Extensions.ObjectExtensions;
using osu.Framework.Graphics;
using osu.Game.Extensions;
using osu.Game.Online.API;
using osu.Game.Online.API.Requests;
using osu.Game.Online.API.Requests.Responses;
using osu.Game.Online.Spectator;
using osu.Game.Scoring;
using osu.Game.Users;
namespace osu.Game.Online.Solo
{
/// <summary>
/// A persistent component that binds to the spectator server and API in order to deliver updates about the logged in user's gameplay statistics.
/// </summary>
public partial class SoloStatisticsWatcher : Component
{
[Resolved]
private SpectatorClient spectatorClient { get; set; } = null!;
[Resolved]
private IAPIProvider api { get; set; } = null!;
private readonly Dictionary<long, StatisticsUpdateCallback> callbacks = new Dictionary<long, StatisticsUpdateCallback>();
private long? lastProcessedScoreId;
private Dictionary<string, UserStatistics>? latestStatistics;
protected override void LoadComplete()
{
base.LoadComplete();
api.LocalUser.BindValueChanged(user => onUserChanged(user.NewValue), true);
spectatorClient.OnUserScoreProcessed += userScoreProcessed;
}
/// <summary>
/// Registers for a user statistics update after the given <paramref name="score"/> has been processed server-side.
/// </summary>
/// <param name="score">The score to listen for the statistics update for.</param>
/// <param name="onUpdateReady">The callback to be invoked once the statistics update has been prepared.</param>
/// <returns>An <see cref="IDisposable"/> representing the subscription. Disposing it is equivalent to unsubscribing from future notifications.</returns>
public IDisposable RegisterForStatisticsUpdateAfter(ScoreInfo score, Action<SoloStatisticsUpdate> onUpdateReady)
{
Schedule(() =>
{
if (!api.IsLoggedIn)
return;
if (!score.Ruleset.IsLegacyRuleset() || score.OnlineID <= 0)
return;
var callback = new StatisticsUpdateCallback(score, onUpdateReady);
if (lastProcessedScoreId == score.OnlineID)
{
requestStatisticsUpdate(api.LocalUser.Value.Id, callback);
return;
}
callbacks.Add(score.OnlineID, callback);
});
return new InvokeOnDisposal(() => Schedule(() => callbacks.Remove(score.OnlineID)));
}
private void onUserChanged(APIUser? localUser) => Schedule(() =>
{
callbacks.Clear();
lastProcessedScoreId = null;
latestStatistics = null;
if (localUser == null || localUser.OnlineID <= 1)
return;
var userRequest = new GetUsersRequest(new[] { localUser.OnlineID });
userRequest.Success += initialiseUserStatistics;
api.Queue(userRequest);
});
private void initialiseUserStatistics(GetUsersResponse response) => Schedule(() =>
{
var user = response.Users.SingleOrDefault();
// possible if the user is restricted or similar.
if (user == null)
return;
latestStatistics = new Dictionary<string, UserStatistics>();
if (user.RulesetsStatistics != null)
{
foreach (var rulesetStats in user.RulesetsStatistics)
latestStatistics.Add(rulesetStats.Key, rulesetStats.Value);
}
});
private void userScoreProcessed(int userId, long scoreId)
{
if (userId != api.LocalUser.Value?.OnlineID)
return;
lastProcessedScoreId = scoreId;
if (!callbacks.TryGetValue(scoreId, out var callback))
return;
requestStatisticsUpdate(userId, callback);
callbacks.Remove(scoreId);
}
private void requestStatisticsUpdate(int userId, StatisticsUpdateCallback callback)
{
var request = new GetUserRequest(userId, callback.Score.Ruleset);
request.Success += user => Schedule(() => dispatchStatisticsUpdate(callback, user.Statistics));
api.Queue(request);
}
private void dispatchStatisticsUpdate(StatisticsUpdateCallback callback, UserStatistics updatedStatistics)
{
string rulesetName = callback.Score.Ruleset.ShortName;
api.UpdateStatistics(updatedStatistics);
if (latestStatistics == null)
return;
latestStatistics.TryGetValue(rulesetName, out UserStatistics? latestRulesetStatistics);
latestRulesetStatistics ??= new UserStatistics();
var update = new SoloStatisticsUpdate(callback.Score, latestRulesetStatistics, updatedStatistics);
callback.OnUpdateReady.Invoke(update);
latestStatistics[rulesetName] = updatedStatistics;
}
protected override void Dispose(bool isDisposing)
{
if (spectatorClient.IsNotNull())
spectatorClient.OnUserScoreProcessed -= userScoreProcessed;
base.Dispose(isDisposing);
}
private class StatisticsUpdateCallback
{
public ScoreInfo Score { get; }
public Action<SoloStatisticsUpdate> OnUpdateReady { get; }
public StatisticsUpdateCallback(ScoreInfo score, Action<SoloStatisticsUpdate> onUpdateReady)
{
Score = score;
OnUpdateReady = onUpdateReady;
}
}
}
}