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633 lines
24 KiB
C#
633 lines
24 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.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Logging;
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using osu.Game.Database;
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using osu.Game.Online.API;
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using osu.Game.Online.API.Requests;
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using osu.Game.Online.API.Requests.Responses;
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using osu.Game.Overlays.Chat.Tabs;
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namespace osu.Game.Online.Chat
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{
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/// <summary>
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/// Manages everything channel related
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/// </summary>
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public class ChannelManager : PollingComponent, IChannelPostTarget
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{
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/// <summary>
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/// The channels the player joins on startup
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/// </summary>
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private readonly string[] defaultChannels =
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{
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@"#lazer",
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@"#osu",
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@"#lobby"
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};
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private readonly BindableList<Channel> availableChannels = new BindableList<Channel>();
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private readonly BindableList<Channel> joinedChannels = new BindableList<Channel>();
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/// <summary>
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/// Keeps a stack of recently closed channels
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/// </summary>
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private readonly List<ClosedChannel> closedChannels = new List<ClosedChannel>();
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// For efficiency purposes, this constant bounds the number of closed channels we store.
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// This number is somewhat arbitrary; future developers are free to modify it.
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// Must be a positive number.
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private const int closed_channels_max_size = 50;
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/// <summary>
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/// The currently opened channel
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/// </summary>
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public Bindable<Channel> CurrentChannel { get; } = new Bindable<Channel>();
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/// <summary>
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/// The Channels the player has joined
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/// </summary>
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public IBindableList<Channel> JoinedChannels => joinedChannels;
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/// <summary>
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/// The channels available for the player to join
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/// </summary>
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public IBindableList<Channel> AvailableChannels => availableChannels;
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[Resolved]
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private IAPIProvider api { get; set; }
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[Resolved]
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private UserLookupCache users { get; set; }
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public readonly BindableBool HighPollRate = new BindableBool();
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public ChannelManager()
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{
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CurrentChannel.ValueChanged += currentChannelChanged;
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HighPollRate.BindValueChanged(enabled => TimeBetweenPolls.Value = enabled.NewValue ? 1000 : 6000, true);
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}
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/// <summary>
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/// Opens a channel or switches to the channel if already opened.
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/// </summary>
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/// <exception cref="ChannelNotFoundException">If the name of the specifed channel was not found this exception will be thrown.</exception>
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/// <param name="name"></param>
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public void OpenChannel(string name)
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{
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if (name == null)
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throw new ArgumentNullException(nameof(name));
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CurrentChannel.Value = AvailableChannels.FirstOrDefault(c => c.Name == name) ?? throw new ChannelNotFoundException(name);
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}
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/// <summary>
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/// Opens a new private channel.
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/// </summary>
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/// <param name="user">The user the private channel is opened with.</param>
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public void OpenPrivateChannel(APIUser user)
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{
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if (user == null)
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throw new ArgumentNullException(nameof(user));
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if (user.Id == api.LocalUser.Value.Id)
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return;
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CurrentChannel.Value = JoinedChannels.FirstOrDefault(c => c.Type == ChannelType.PM && c.Users.Count == 1 && c.Users.Any(u => u.Id == user.Id))
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?? JoinChannel(new Channel(user));
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}
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private void currentChannelChanged(ValueChangedEvent<Channel> e)
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{
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if (!(e.NewValue is ChannelSelectorTabItem.ChannelSelectorTabChannel))
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JoinChannel(e.NewValue);
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}
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/// <summary>
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/// Ensure we run post actions in sequence, once at a time.
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/// </summary>
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private readonly Queue<Action> postQueue = new Queue<Action>();
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/// <summary>
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/// Posts a message to the currently opened channel.
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/// </summary>
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/// <param name="text">The message text that is going to be posted</param>
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/// <param name="isAction">Is true if the message is an action, e.g.: user is currently eating </param>
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/// <param name="target">An optional target channel. If null, <see cref="CurrentChannel"/> will be used.</param>
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public void PostMessage(string text, bool isAction = false, Channel target = null)
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{
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target ??= CurrentChannel.Value;
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if (target == null)
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return;
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void dequeueAndRun()
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{
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if (postQueue.Count > 0)
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postQueue.Dequeue().Invoke();
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}
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postQueue.Enqueue(() =>
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{
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if (!api.IsLoggedIn)
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{
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target.AddNewMessages(new ErrorMessage("Please sign in to participate in chat!"));
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return;
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}
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var message = new LocalEchoMessage
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{
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Sender = api.LocalUser.Value,
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Timestamp = DateTimeOffset.Now,
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ChannelId = target.Id,
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IsAction = isAction,
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Content = text
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};
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target.AddLocalEcho(message);
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// if this is a PM and the first message, we need to do a special request to create the PM channel
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if (target.Type == ChannelType.PM && target.Id == 0)
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{
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var createNewPrivateMessageRequest = new CreateNewPrivateMessageRequest(target.Users.First(), message);
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createNewPrivateMessageRequest.Success += createRes =>
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{
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target.Id = createRes.ChannelID;
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target.ReplaceMessage(message, createRes.Message);
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dequeueAndRun();
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};
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createNewPrivateMessageRequest.Failure += exception =>
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{
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handlePostException(exception);
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target.ReplaceMessage(message, null);
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dequeueAndRun();
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};
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api.Queue(createNewPrivateMessageRequest);
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return;
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}
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var req = new PostMessageRequest(message);
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req.Success += m =>
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{
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target.ReplaceMessage(message, m);
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dequeueAndRun();
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};
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req.Failure += exception =>
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{
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handlePostException(exception);
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target.ReplaceMessage(message, null);
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dequeueAndRun();
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};
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api.Queue(req);
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});
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// always run if the queue is empty
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if (postQueue.Count == 1)
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dequeueAndRun();
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}
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private static void handlePostException(Exception exception)
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{
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if (exception is APIException apiException)
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Logger.Log(apiException.Message, level: LogLevel.Important);
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else
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Logger.Error(exception, "Posting message failed.");
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}
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/// <summary>
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/// Posts a command locally. Commands like /help will result in a help message written in the current channel.
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/// </summary>
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/// <param name="text">the text containing the command identifier and command parameters.</param>
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/// <param name="target">An optional target channel. If null, <see cref="CurrentChannel"/> will be used.</param>
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public void PostCommand(string text, Channel target = null)
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{
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target ??= CurrentChannel.Value;
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if (target == null)
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return;
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string[] parameters = text.Split(' ', 2);
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string command = parameters[0];
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string content = parameters.Length == 2 ? parameters[1] : string.Empty;
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switch (command)
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{
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case "np":
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AddInternal(new NowPlayingCommand(target));
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break;
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case "me":
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if (string.IsNullOrWhiteSpace(content))
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{
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target.AddNewMessages(new ErrorMessage("Usage: /me [action]"));
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break;
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}
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PostMessage(content, true, target);
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break;
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case "join":
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if (string.IsNullOrWhiteSpace(content))
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{
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target.AddNewMessages(new ErrorMessage("Usage: /join [channel]"));
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break;
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}
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var channel = availableChannels.FirstOrDefault(c => c.Name == content || c.Name == $"#{content}");
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if (channel == null)
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{
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target.AddNewMessages(new ErrorMessage($"Channel '{content}' not found."));
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break;
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}
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JoinChannel(channel);
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break;
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case "chat":
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case "msg":
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case "query":
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if (string.IsNullOrWhiteSpace(content))
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{
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target.AddNewMessages(new ErrorMessage($"Usage: /{command} [user]"));
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break;
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}
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// Check if the user has joined the requested channel already.
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// This uses the channel name for comparison as the PM user's username is unavailable after a restart.
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var privateChannel = JoinedChannels.FirstOrDefault(
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c => c.Type == ChannelType.PM && c.Users.Count == 1 && c.Name.Equals(content, StringComparison.OrdinalIgnoreCase));
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if (privateChannel != null)
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{
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CurrentChannel.Value = privateChannel;
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break;
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}
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var request = new GetUserRequest(content);
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request.Success += OpenPrivateChannel;
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request.Failure += e => target.AddNewMessages(
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new ErrorMessage(e.InnerException?.Message == @"NotFound" ? $"User '{content}' was not found." : $"Could not fetch user '{content}'."));
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api.Queue(request);
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break;
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case "help":
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target.AddNewMessages(new InfoMessage("Supported commands: /help, /me [action], /join [channel], /chat [user], /np"));
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break;
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default:
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target.AddNewMessages(new ErrorMessage($@"""/{command}"" is not supported! For a list of supported commands see /help"));
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break;
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}
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}
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private void handleChannelMessages(IEnumerable<Message> messages)
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{
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var channels = JoinedChannels.ToList();
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foreach (var group in messages.GroupBy(m => m.ChannelId))
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channels.Find(c => c.Id == group.Key)?.AddNewMessages(group.ToArray());
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}
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private void initializeChannels()
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{
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var req = new ListChannelsRequest();
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bool joinDefaults = JoinedChannels.Count == 0;
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req.Success += channels =>
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{
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foreach (var channel in channels)
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{
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var ch = getChannel(channel, addToAvailable: true);
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// join any channels classified as "defaults"
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if (joinDefaults && defaultChannels.Any(c => c.Equals(channel.Name, StringComparison.OrdinalIgnoreCase)))
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joinChannel(ch);
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}
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};
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req.Failure += error =>
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{
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Logger.Error(error, "Fetching channel list failed");
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initializeChannels();
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};
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api.Queue(req);
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}
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/// <summary>
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/// Fetches inital messages of a channel
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///
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/// TODO: remove this when the API supports returning initial fetch messages for more than one channel by specifying the last message id per channel instead of one last message id globally.
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/// right now it caps out at 50 messages and therefore only returns one channel's worth of content.
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/// </summary>
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/// <param name="channel">The channel </param>
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private void fetchInitalMessages(Channel channel)
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{
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if (channel.Id <= 0 || channel.MessagesLoaded) return;
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var fetchInitialMsgReq = new GetMessagesRequest(channel);
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fetchInitialMsgReq.Success += messages =>
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{
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handleChannelMessages(messages);
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channel.MessagesLoaded = true; // this will mark the channel as having received messages even if there were none.
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};
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api.Queue(fetchInitialMsgReq);
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}
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/// <summary>
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/// Find an existing channel instance for the provided channel. Lookup is performed basd on ID.
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/// The provided channel may be used if an existing instance is not found.
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/// </summary>
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/// <param name="lookup">A candidate channel to be used for lookup or permanently on lookup failure.</param>
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/// <param name="addToAvailable">Whether the channel should be added to <see cref="AvailableChannels"/> if not already.</param>
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/// <param name="addToJoined">Whether the channel should be added to <see cref="JoinedChannels"/> if not already.</param>
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/// <returns>The found channel.</returns>
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private Channel getChannel(Channel lookup, bool addToAvailable = false, bool addToJoined = false)
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{
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Channel found = null;
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bool lookupCondition(Channel ch) => lookup.Id > 0 ? ch.Id == lookup.Id : lookup.Name == ch.Name;
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var available = AvailableChannels.FirstOrDefault(lookupCondition);
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if (available != null)
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found = available;
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var joined = JoinedChannels.FirstOrDefault(lookupCondition);
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if (found == null && joined != null)
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found = joined;
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if (found == null)
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{
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found = lookup;
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// if we're using a channel object from the server, we want to remove ourselves from the users list.
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// this is because we check the first user in the channel to display a name/icon on tabs for now.
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var foundSelf = found.Users.FirstOrDefault(u => u.Id == api.LocalUser.Value.Id);
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if (foundSelf != null)
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found.Users.Remove(foundSelf);
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}
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if (joined == null && addToJoined) joinedChannels.Add(found);
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if (available == null && addToAvailable) availableChannels.Add(found);
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return found;
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}
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/// <summary>
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/// Joins a channel if it has not already been joined. Must be called from the update thread.
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/// </summary>
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/// <param name="channel">The channel to join.</param>
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/// <returns>The joined channel. Note that this may not match the parameter channel as it is a backed object.</returns>
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public Channel JoinChannel(Channel channel) => joinChannel(channel, true);
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private Channel joinChannel(Channel channel, bool fetchInitialMessages = false)
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{
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if (channel == null) return null;
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channel = getChannel(channel, addToJoined: true);
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// ensure we are joined to the channel
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if (!channel.Joined.Value)
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{
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channel.Joined.Value = true;
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switch (channel.Type)
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{
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case ChannelType.Multiplayer:
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// join is implicit. happens when you join a multiplayer game.
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// this will probably change in the future.
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joinChannel(channel, fetchInitialMessages);
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return channel;
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case ChannelType.PM:
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var createRequest = new CreateChannelRequest(channel);
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createRequest.Success += resChannel =>
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{
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if (resChannel.ChannelID.HasValue)
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{
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channel.Id = resChannel.ChannelID.Value;
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handleChannelMessages(resChannel.RecentMessages);
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channel.MessagesLoaded = true; // this will mark the channel as having received messages even if there were none.
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}
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};
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api.Queue(createRequest);
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break;
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default:
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var req = new JoinChannelRequest(channel);
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req.Success += () => joinChannel(channel, fetchInitialMessages);
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req.Failure += ex => LeaveChannel(channel);
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api.Queue(req);
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return channel;
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}
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}
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else
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{
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if (fetchInitialMessages)
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fetchInitalMessages(channel);
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}
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CurrentChannel.Value ??= channel;
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return channel;
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}
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/// <summary>
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/// Leave the specified channel. Can be called from any thread.
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/// </summary>
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/// <param name="channel">The channel to leave.</param>
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public void LeaveChannel(Channel channel) => Schedule(() =>
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{
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if (channel == null) return;
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if (channel == CurrentChannel.Value)
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CurrentChannel.Value = null;
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joinedChannels.Remove(channel);
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// Prevent the closedChannel list from exceeding the max size
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// by removing the oldest element
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if (closedChannels.Count >= closed_channels_max_size)
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{
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closedChannels.RemoveAt(0);
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}
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// For PM channels, we store the user ID; else, we store the channel ID
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closedChannels.Add(channel.Type == ChannelType.PM
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? new ClosedChannel(ChannelType.PM, channel.Users.Single().Id)
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: new ClosedChannel(channel.Type, channel.Id));
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if (channel.Joined.Value)
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{
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api.Queue(new LeaveChannelRequest(channel));
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channel.Joined.Value = false;
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}
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});
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/// <summary>
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/// Opens the most recently closed channel that has not already been reopened,
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/// Works similarly to reopening the last closed tab on a web browser.
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/// </summary>
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public void JoinLastClosedChannel()
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{
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// This loop could be eliminated if the join channel operation ensured that every channel joined
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// is removed from the closedChannels list, but it'd require a linear scan of closed channels on every join.
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// To keep the overhead of joining channels low, just lazily scan the list of closed channels locally.
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while (closedChannels.Count > 0)
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{
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ClosedChannel lastClosedChannel = closedChannels.Last();
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closedChannels.RemoveAt(closedChannels.Count - 1);
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// If the user has already joined the channel, try the next one
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if (joinedChannels.FirstOrDefault(lastClosedChannel.Matches) != null)
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continue;
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Channel lastChannel = AvailableChannels.FirstOrDefault(lastClosedChannel.Matches);
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if (lastChannel != null)
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{
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// Channel exists as an available channel, directly join it
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CurrentChannel.Value = JoinChannel(lastChannel);
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}
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else if (lastClosedChannel.Type == ChannelType.PM)
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{
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// Try to get user in order to open PM chat
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users.GetUserAsync((int)lastClosedChannel.Id).ContinueWith(u =>
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{
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if (u.Result == null) return;
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Schedule(() => CurrentChannel.Value = JoinChannel(new Channel(u.Result)));
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});
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}
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return;
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}
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}
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private long lastMessageId;
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private bool channelsInitialised;
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protected override Task Poll()
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{
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if (!api.IsLoggedIn)
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return base.Poll();
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var fetchReq = new GetUpdatesRequest(lastMessageId);
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var tcs = new TaskCompletionSource<bool>();
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fetchReq.Success += updates =>
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{
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if (updates?.Presence != null)
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{
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foreach (var channel in updates.Presence)
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{
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// we received this from the server so should mark the channel already joined.
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channel.Joined.Value = true;
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joinChannel(channel);
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}
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//todo: handle left channels
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handleChannelMessages(updates.Messages);
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foreach (var group in updates.Messages.GroupBy(m => m.ChannelId))
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JoinedChannels.FirstOrDefault(c => c.Id == group.Key)?.AddNewMessages(group.ToArray());
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lastMessageId = updates.Messages.LastOrDefault()?.Id ?? lastMessageId;
|
|
}
|
|
|
|
if (!channelsInitialised)
|
|
{
|
|
channelsInitialised = true;
|
|
// we want this to run after the first presence so we can see if the user is in any channels already.
|
|
initializeChannels();
|
|
}
|
|
|
|
tcs.SetResult(true);
|
|
};
|
|
|
|
fetchReq.Failure += _ => tcs.SetResult(false);
|
|
|
|
api.Queue(fetchReq);
|
|
|
|
return tcs.Task;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Marks the <paramref name="channel"/> as read
|
|
/// </summary>
|
|
/// <param name="channel">The channel that will be marked as read</param>
|
|
public void MarkChannelAsRead(Channel channel)
|
|
{
|
|
if (channel.LastMessageId == channel.LastReadId)
|
|
return;
|
|
|
|
var message = channel.Messages.FindLast(msg => !(msg is LocalMessage));
|
|
|
|
if (message == null)
|
|
return;
|
|
|
|
var req = new MarkChannelAsReadRequest(channel, message);
|
|
|
|
req.Success += () => channel.LastReadId = message.Id;
|
|
req.Failure += e => Logger.Error(e, $"Failed to mark channel {channel} up to '{message}' as read");
|
|
|
|
api.Queue(req);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// An exception thrown when a channel could not been found.
|
|
/// </summary>
|
|
public class ChannelNotFoundException : Exception
|
|
{
|
|
public ChannelNotFoundException(string channelName)
|
|
: base($"A channel with the name {channelName} could not be found.")
|
|
{
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stores information about a closed channel
|
|
/// </summary>
|
|
public class ClosedChannel
|
|
{
|
|
public readonly ChannelType Type;
|
|
public readonly long Id;
|
|
|
|
public ClosedChannel(ChannelType type, long id)
|
|
{
|
|
Type = type;
|
|
Id = id;
|
|
}
|
|
|
|
public bool Matches(Channel channel)
|
|
{
|
|
if (channel.Type != Type) return false;
|
|
|
|
return Type == ChannelType.PM
|
|
? channel.Users.Single().Id == Id
|
|
: channel.Id == Id;
|
|
}
|
|
}
|
|
}
|