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| 1 | +// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence. |
| 2 | +// See the LICENCE file in the repository root for full licence text. |
| 3 | + |
| 4 | +using System; |
| 5 | +using System.Collections.Concurrent; |
| 6 | +using System.Collections.Generic; |
| 7 | +using System.Diagnostics; |
| 8 | +using Newtonsoft.Json; |
| 9 | +using osu.Framework.Bindables; |
| 10 | +using osu.Framework.Extensions; |
| 11 | +using osu.Framework.Logging; |
| 12 | +using osu.Game.Online.API; |
| 13 | +using osu.Game.Online.API.Requests; |
| 14 | +using osu.Game.Online.Notifications.WebSocket; |
| 15 | + |
| 16 | +namespace osu.Game.Online.Chat |
| 17 | +{ |
| 18 | + public class WebSocketChatClient : IChatClient |
| 19 | + { |
| 20 | + public event Action<Channel>? ChannelJoined; |
| 21 | + public event Action<Channel>? ChannelParted; |
| 22 | + public event Action<List<Message>>? NewMessages; |
| 23 | + public event Action? PresenceReceived; |
| 24 | + |
| 25 | + private readonly IAPIProvider api; |
| 26 | + private readonly INotificationsClient client; |
| 27 | + private readonly ConcurrentDictionary<long, Channel> channelsMap = new ConcurrentDictionary<long, Channel>(); |
| 28 | + |
| 29 | + public WebSocketChatClient(IAPIProvider api) |
| 30 | + { |
| 31 | + this.api = api; |
| 32 | + client = api.NotificationsClient; |
| 33 | + client.IsConnected.BindValueChanged(start, true); |
| 34 | + } |
| 35 | + |
| 36 | + private void start(ValueChangedEvent<bool> connected) |
| 37 | + { |
| 38 | + if (!connected.NewValue) |
| 39 | + return; |
| 40 | + |
| 41 | + client.MessageReceived += onMessageReceived; |
| 42 | + client.SendAsync(new StartChatRequest()).WaitSafely(); |
| 43 | + } |
| 44 | + |
| 45 | + public void FetchInitialMessages() |
| 46 | + { |
| 47 | + api.Queue(createInitialFetchRequest()); |
| 48 | + } |
| 49 | + |
| 50 | + private APIRequest createInitialFetchRequest() |
| 51 | + { |
| 52 | + var fetchReq = new GetUpdatesRequest(0); |
| 53 | + |
| 54 | + fetchReq.Success += updates => |
| 55 | + { |
| 56 | + if (updates?.Presence != null) |
| 57 | + { |
| 58 | + foreach (var channel in updates.Presence) |
| 59 | + joinChannel(channel); |
| 60 | + |
| 61 | + handleMessages(updates.Messages); |
| 62 | + } |
| 63 | + |
| 64 | + PresenceReceived?.Invoke(); |
| 65 | + }; |
| 66 | + |
| 67 | + return fetchReq; |
| 68 | + } |
| 69 | + |
| 70 | + private void onMessageReceived(SocketMessage message) |
| 71 | + { |
| 72 | + switch (message.Event) |
| 73 | + { |
| 74 | + case @"chat.channel.join": |
| 75 | + Debug.Assert(message.Data != null); |
| 76 | + |
| 77 | + Channel? joinedChannel = JsonConvert.DeserializeObject<Channel>(message.Data.ToString()); |
| 78 | + Debug.Assert(joinedChannel != null); |
| 79 | + |
| 80 | + joinChannel(joinedChannel); |
| 81 | + break; |
| 82 | + |
| 83 | + case @"chat.channel.part": |
| 84 | + Debug.Assert(message.Data != null); |
| 85 | + |
| 86 | + Channel? partedChannel = JsonConvert.DeserializeObject<Channel>(message.Data.ToString()); |
| 87 | + Debug.Assert(partedChannel != null); |
| 88 | + |
| 89 | + partChannel(partedChannel); |
| 90 | + break; |
| 91 | + |
| 92 | + case @"chat.message.new": |
| 93 | + Debug.Assert(message.Data != null); |
| 94 | + |
| 95 | + NewChatMessageData? messageData = JsonConvert.DeserializeObject<NewChatMessageData>(message.Data.ToString()); |
| 96 | + Debug.Assert(messageData != null); |
| 97 | + |
| 98 | + foreach (var msg in messageData.Messages) |
| 99 | + postToChannel(msg); |
| 100 | + |
| 101 | + break; |
| 102 | + } |
| 103 | + } |
| 104 | + |
| 105 | + private void postToChannel(Message message) |
| 106 | + { |
| 107 | + if (channelsMap.TryGetValue(message.ChannelId, out Channel? channel)) |
| 108 | + { |
| 109 | + joinChannel(channel); |
| 110 | + NewMessages?.Invoke(new List<Message> { message }); |
| 111 | + return; |
| 112 | + } |
| 113 | + |
| 114 | + var req = new GetChannelRequest(message.ChannelId); |
| 115 | + |
| 116 | + req.Success += response => |
| 117 | + { |
| 118 | + joinChannel(channelsMap[message.ChannelId] = response.Channel); |
| 119 | + NewMessages?.Invoke(new List<Message> { message }); |
| 120 | + }; |
| 121 | + req.Failure += ex => Logger.Error(ex, "Failed to join channel"); |
| 122 | + |
| 123 | + api.Queue(req); |
| 124 | + } |
| 125 | + |
| 126 | + private void joinChannel(Channel ch) |
| 127 | + { |
| 128 | + ch.Joined.Value = true; |
| 129 | + ChannelJoined?.Invoke(ch); |
| 130 | + } |
| 131 | + |
| 132 | + private void partChannel(Channel channel) => ChannelParted?.Invoke(channel); |
| 133 | + |
| 134 | + private void handleMessages(List<Message>? messages) |
| 135 | + { |
| 136 | + if (messages == null) |
| 137 | + return; |
| 138 | + |
| 139 | + NewMessages?.Invoke(messages); |
| 140 | + } |
| 141 | + |
| 142 | + public void Dispose() |
| 143 | + { |
| 144 | + client.IsConnected.ValueChanged -= start; |
| 145 | + client.MessageReceived -= onMessageReceived; |
| 146 | + } |
| 147 | + } |
| 148 | +} |
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