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80 lines
2.3 KiB
C#
80 lines
2.3 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;
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using System.Threading.Tasks;
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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.Chat;
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namespace osu.Game.Online.Notifications
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{
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/// <summary>
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/// An abstract client which receives notification-related events (chat/notifications).
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/// </summary>
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public abstract class NotificationsClient : PersistentEndpointClient
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{
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public Action<Channel>? ChannelJoined;
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public Action<Channel>? ChannelParted;
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public Action<List<Message>>? NewMessages;
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public Action? PresenceReceived;
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protected readonly IAPIProvider API;
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private long lastMessageId;
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protected NotificationsClient(IAPIProvider api)
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{
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API = api;
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}
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public override Task ConnectAsync(CancellationToken cancellationToken)
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{
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API.Queue(CreateInitialFetchRequest(0));
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return Task.CompletedTask;
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}
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protected APIRequest CreateInitialFetchRequest(long? lastMessageId = null)
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{
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var fetchReq = new GetUpdatesRequest(lastMessageId ?? this.lastMessageId);
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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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HandleChannelJoined(channel);
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//todo: handle left channels
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HandleMessages(updates.Messages);
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}
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PresenceReceived?.Invoke();
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};
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return fetchReq;
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}
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protected void HandleChannelJoined(Channel channel)
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{
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channel.Joined.Value = true;
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ChannelJoined?.Invoke(channel);
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}
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protected void HandleChannelParted(Channel channel) => ChannelParted?.Invoke(channel);
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protected void HandleMessages(List<Message>? messages)
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{
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if (messages == null)
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return;
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NewMessages?.Invoke(messages);
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lastMessageId = Math.Max(lastMessageId, messages.LastOrDefault()?.Id ?? 0);
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}
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}
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}
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