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osu-lazer/osu.Desktop/DiscordRichPresence.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.
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using System;
using System.Text;
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using DiscordRPC;
using DiscordRPC.Message;
using Newtonsoft.Json;
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using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Extensions.ObjectExtensions;
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using osu.Framework.Graphics;
using osu.Framework.Logging;
using osu.Framework.Threading;
using osu.Game;
using osu.Game.Configuration;
using osu.Game.Extensions;
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using osu.Game.Online.API;
using osu.Game.Online.API.Requests.Responses;
using osu.Game.Online.Multiplayer;
using osu.Game.Online.Rooms;
using osu.Game.Overlays;
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using osu.Game.Rulesets;
using osu.Game.Users;
using LogLevel = osu.Framework.Logging.LogLevel;
namespace osu.Desktop
{
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internal partial class DiscordRichPresence : Component
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{
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private const string client_id = "1216669957799018608";
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private DiscordRpcClient client = null!;
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[Resolved]
private IBindable<RulesetInfo> ruleset { get; set; } = null!;
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[Resolved]
private IAPIProvider api { get; set; } = null!;
[Resolved]
private OsuGame game { get; set; } = null!;
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[Resolved]
private LoginOverlay? login { get; set; }
[Resolved]
private MultiplayerClient multiplayerClient { get; set; } = null!;
[Resolved]
private OsuConfigManager config { get; set; } = null!;
private readonly IBindable<UserStatus?> status = new Bindable<UserStatus?>();
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private readonly IBindable<UserActivity> activity = new Bindable<UserActivity>();
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private readonly Bindable<DiscordRichPresenceMode> privacyMode = new Bindable<DiscordRichPresenceMode>();
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private readonly RichPresence presence = new RichPresence
{
Assets = new Assets { LargeImageKey = "osu_logo_lazer" },
Secrets = new Secrets
{
JoinSecret = null,
SpectateSecret = null,
},
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};
private IBindable<APIUser>? user;
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[BackgroundDependencyLoader]
private void load()
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{
client = new DiscordRpcClient(client_id)
{
// SkipIdenticalPresence allows us to fire SetPresence at any point and leave it to the underlying implementation
// to check whether a difference has actually occurred before sending a command to Discord (with a minor caveat that's handled in onReady).
SkipIdenticalPresence = true
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};
client.OnReady += onReady;
client.OnError += (_, e) => Logger.Log($"An error occurred with Discord RPC Client: {e.Message} ({e.Code})", LoggingTarget.Network, LogLevel.Error);
try
{
client.RegisterUriScheme();
client.Subscribe(EventType.Join);
client.OnJoin += onJoin;
}
catch (Exception ex)
{
// This is known to fail in at least the following sandboxed environments:
// - macOS (when packaged as an app bundle)
// - flatpak (see: https://github.com/flathub/sh.ppy.osu/issues/170)
// There is currently no better way to do this offered by Discord, so the best we can do is simply ignore it for now.
Logger.Log($"Failed to register Discord URI scheme: {ex}");
}
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client.Initialize();
}
protected override void LoadComplete()
{
base.LoadComplete();
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config.BindWith(OsuSetting.DiscordRichPresence, privacyMode);
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user = api.LocalUser.GetBoundCopy();
user.BindValueChanged(u =>
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{
status.UnbindBindings();
status.BindTo(u.NewValue.Status);
activity.UnbindBindings();
activity.BindTo(u.NewValue.Activity);
}, true);
ruleset.BindValueChanged(_ => schedulePresenceUpdate());
status.BindValueChanged(_ => schedulePresenceUpdate());
activity.BindValueChanged(_ => schedulePresenceUpdate());
privacyMode.BindValueChanged(_ => schedulePresenceUpdate());
multiplayerClient.RoomUpdated += onRoomUpdated;
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}
private void onReady(object _, ReadyMessage __)
{
Logger.Log("Discord RPC Client ready.", LoggingTarget.Network, LogLevel.Debug);
// when RPC is lost and reconnected, we have to clear presence state for updatePresence to work (see DiscordRpcClient.SkipIdenticalPresence).
if (client.CurrentPresence != null)
client.SetPresence(null);
schedulePresenceUpdate();
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}
private void onRoomUpdated() => schedulePresenceUpdate();
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private ScheduledDelegate? presenceUpdateDelegate;
private void schedulePresenceUpdate()
{
presenceUpdateDelegate?.Cancel();
presenceUpdateDelegate = Scheduler.AddDelayed(() =>
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{
if (!client.IsInitialized)
return;
if (status.Value == UserStatus.Offline || privacyMode.Value == DiscordRichPresenceMode.Off)
{
client.ClearPresence();
return;
}
bool hideIdentifiableInformation = privacyMode.Value == DiscordRichPresenceMode.Limited || status.Value == UserStatus.DoNotDisturb;
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updatePresence(hideIdentifiableInformation);
client.SetPresence(presence);
}, 200);
}
private void updatePresence(bool hideIdentifiableInformation)
{
if (user == null)
return;
// user activity
if (activity.Value != null)
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{
presence.State = clampLength(activity.Value.GetStatus(hideIdentifiableInformation));
presence.Details = clampLength(activity.Value.GetDetails(hideIdentifiableInformation) ?? string.Empty);
if (getBeatmapID(activity.Value) is int beatmapId && beatmapId > 0)
{
presence.Buttons = new[]
{
new Button
{
Label = "View beatmap",
Url = $@"{api.WebsiteRootUrl}/beatmaps/{beatmapId}?mode={ruleset.Value.ShortName}"
}
};
}
else
{
presence.Buttons = null;
}
}
else
{
presence.State = "Idle";
presence.Details = string.Empty;
}
// user party
if (!hideIdentifiableInformation && multiplayerClient.Room != null)
{
MultiplayerRoom room = multiplayerClient.Room;
presence.Party = new Party
{
Privacy = string.IsNullOrEmpty(room.Settings.Password) ? Party.PrivacySetting.Public : Party.PrivacySetting.Private,
ID = room.RoomID.ToString(),
// technically lobbies can have infinite users, but Discord needs this to be set to something.
// to make party display sensible, assign a powers of two above participants count (8 at minimum).
Max = (int)Math.Max(8, Math.Pow(2, Math.Ceiling(Math.Log2(room.Users.Count)))),
Size = room.Users.Count,
};
RoomSecret roomSecret = new RoomSecret
{
RoomID = room.RoomID,
Password = room.Settings.Password,
};
if (client.HasRegisteredUriScheme)
presence.Secrets.JoinSecret = JsonConvert.SerializeObject(roomSecret);
// discord cannot handle both secrets and buttons at the same time, so we need to choose something.
// the multiplayer room seems more important.
presence.Buttons = null;
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}
else
{
presence.Party = null;
presence.Secrets.JoinSecret = null;
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}
// game images:
// large image tooltip
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if (privacyMode.Value == DiscordRichPresenceMode.Limited)
presence.Assets.LargeImageText = string.Empty;
else
{
if (user.Value.RulesetsStatistics != null && user.Value.RulesetsStatistics.TryGetValue(ruleset.Value.ShortName, out UserStatistics? statistics))
presence.Assets.LargeImageText = $"{user.Value.Username}" + (statistics.GlobalRank > 0 ? $" (rank #{statistics.GlobalRank:N0})" : string.Empty);
else
presence.Assets.LargeImageText = $"{user.Value.Username}" + (user.Value.Statistics?.GlobalRank > 0 ? $" (rank #{user.Value.Statistics.GlobalRank:N0})" : string.Empty);
}
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// small image
presence.Assets.SmallImageKey = ruleset.Value.IsLegacyRuleset() ? $"mode_{ruleset.Value.OnlineID}" : "mode_custom";
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presence.Assets.SmallImageText = ruleset.Value.Name;
}
private void onJoin(object sender, JoinMessage args) => Scheduler.AddOnce(() =>
{
game.Window?.Raise();
if (!api.IsLoggedIn)
{
login?.Show();
return;
}
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Logger.Log($"Received room secret from Discord RPC Client: \"{args.Secret}\"", LoggingTarget.Network, LogLevel.Debug);
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// Stable and lazer share the same Discord client ID, meaning they can accept join requests from each other.
// Since they aren't compatible in multi, see if stable's format is being used and log to avoid confusion.
if (args.Secret[0] != '{' || !tryParseRoomSecret(args.Secret, out long roomId, out string? password))
{
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Logger.Log("Could not join multiplayer room, invitation is invalid or incompatible.", LoggingTarget.Network, LogLevel.Important);
return;
}
var request = new GetRoomRequest(roomId);
request.Success += room => Schedule(() =>
{
game.PresentMultiplayerMatch(room, password);
});
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request.Failure += _ => Logger.Log($"Could not join multiplayer room, room could not be found (room ID: {roomId}).", LoggingTarget.Network, LogLevel.Important);
api.Queue(request);
});
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private static readonly int ellipsis_length = Encoding.UTF8.GetByteCount(new[] { '…' });
private static string clampLength(string str)
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{
// Empty strings are fine to discord even though single-character strings are not. Make it make sense.
if (string.IsNullOrEmpty(str))
return str;
// As above, discord decides that *non-empty* strings shorter than 2 characters cannot possibly be valid input, because... reasons?
// And yes, that is two *characters*, or *codepoints*, not *bytes* as further down below (as determined by empirical testing).
// Also, spaces don't count. Because reasons, clearly.
// That all seems very questionable, and isn't even documented anywhere. So to *make it* accept such valid input,
// just tack on enough of U+200B ZERO WIDTH SPACEs at the end. After making sure to trim whitespace.
string trimmed = str.Trim();
if (trimmed.Length < 2)
return trimmed.PadRight(2, '\u200B');
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if (Encoding.UTF8.GetByteCount(str) <= 128)
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return str;
ReadOnlyMemory<char> strMem = str.AsMemory();
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do
{
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strMem = strMem[..^1];
} while (Encoding.UTF8.GetByteCount(strMem.Span) + ellipsis_length > 128);
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return string.Create(strMem.Length + 1, strMem, (span, mem) =>
{
mem.Span.CopyTo(span);
span[^1] = '…';
});
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}
private static bool tryParseRoomSecret(string secretJson, out long roomId, out string? password)
{
roomId = 0;
password = null;
RoomSecret? roomSecret;
try
{
roomSecret = JsonConvert.DeserializeObject<RoomSecret>(secretJson);
}
catch
{
return false;
}
if (roomSecret == null) return false;
roomId = roomSecret.RoomID;
password = roomSecret.Password;
return true;
}
private static int? getBeatmapID(UserActivity activity)
{
switch (activity)
{
case UserActivity.InGame game:
return game.BeatmapID;
case UserActivity.EditingBeatmap edit:
return edit.BeatmapID;
}
return null;
}
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protected override void Dispose(bool isDisposing)
{
if (multiplayerClient.IsNotNull())
multiplayerClient.RoomUpdated -= onRoomUpdated;
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client.Dispose();
base.Dispose(isDisposing);
}
private class RoomSecret
{
[JsonProperty(@"roomId", Required = Required.Always)]
public long RoomID { get; set; }
[JsonProperty(@"password", Required = Required.AllowNull)]
public string? Password { get; set; }
}
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}
}