c# - 将 guildUserProperties.Mute 设置为 false 时，Bot 不会取消用户静音

Question

我使用 Discord.Net 创建了一个 Discord 机器人，它观察来自多个公会的多个语音 channel 。我在听 UserVoiceStateUpdated事件，因为每当用户加入被静音的观察语音 channel 时，该用户应该被机器人静音。每当用户离开观察到的语音信道时，该用户应该被取消静音。
我有一个内存缓存，用于保存有关所有观察到的语音 channel 的信息。每个信息对象提供这些信息

public class ObservedVoiceChannelInfo
{
    public ulong VoiceChannelId { get; set; }
    public bool Muted { get; set; }
    public List<ulong> MutedUserIds { get; set; } = new List<ulong>();
}

对于事件部分，我考虑了以下几点:

如果用户离开观察到的处于静音状态的语音 channel ，则该用户应该被机器人取消静音

如果用户加入具有静音状态的观察语音 channel ，则该用户应该被机器人静音

基本上我想要实现的是:如果有人加入观察到的静音语音 channel ，请将该用户静音。如果该用户离开此 channel ，则在状态为静音的情况下取消他的静音。
这是我当前的实现( observedVoiceChannelsCache 是具有观察语音 channel 的内存缓存字典)

    private async Task OnUserVoiceStateUpdated(SocketUser socketUser, SocketVoiceState oldSocketVoiceState,
        SocketVoiceState newSocketVoiceState)
    {
        SocketGuildUser socketGuildUser = socketUser as SocketGuildUser;

        if (newSocketVoiceState.IsMuted &&
            newSocketVoiceState.VoiceChannel == null &&
            _observedVoiceChannelsCache.TryGetValue(oldSocketVoiceState.VoiceChannel.Id,
                out ObservedVoiceChannelInfo oldObservedVoiceChannelInfo) &&
            oldObservedVoiceChannelInfo.Muted)
        {
            bool userRemovedFromMuteList = oldObservedVoiceChannelInfo.MutedUserIds.Remove(socketGuildUser.Id);

            if (userRemovedFromMuteList)
                await SetUserVoiceState(socketGuildUser, false);
        }
        else if (!newSocketVoiceState.IsMuted &&
                 newSocketVoiceState.VoiceChannel != null &&
                 _observedVoiceChannelsCache.TryGetValue(newSocketVoiceState.VoiceChannel.Id,
                     out ObservedVoiceChannelInfo newObservedVoiceChannelInfo) &&
                 newObservedVoiceChannelInfo.Muted)
        {
            await SetUserVoiceState(socketGuildUser, true);
            newObservedVoiceChannelInfo.MutedUserIds.Add(socketGuildUser.Id);
        }
    }

    private async Task SetUserVoiceState(SocketGuildUser socketGuildUser, bool muted)
    {
        await socketGuildUser.ModifyAsync(guildUserProperties => { guildUserProperties.Mute = muted; });
    }

else 块似乎工作正常(加入观察到的静音 channel )。但是第一个 if 块(离开观察到的静音 channel )不起作用。用户从列表中删除，但在调用 SetUserVoiceState 时与 false用户不会被机器人取消静音。我可以通过加入观察到的静音语音 channel ，离开它并加入另一个未观察到的语音 channel 来重现它。那我还是哑巴了。
有人知道这里缺少什么吗？

Answer 1

注意:重要注释下的变量需要在bot启动时进行初始化。
该脚本通过跟踪静音用户来工作，并且不会取消已被管理员静音的用户的静音。 bot 只能在处于事件状态时跟踪静音用户，因此您可能希望为 SelfOrAdminMutedUsersIds 列表包含一个保存功能，或者开发一种从 discord 接收该列表的方法。

public class ObservedVoiceChannelInfo
{
    public ulong VoiceChannelId { get; set; }
    public bool Muted { get; set; }
    public List<ulong> MutedUserIds { get; set; } = new List<ulong>();
}
public class ObservedGuildsMutingInfo
{
    public ulong GuildId { get; set; }
    public List<ulong> SelfOrAdminMutedUsersIds { get; set; }
}

//IMPORTANT: make sure to initialize on bot start:
public Dictionary<ulong, ObservedGuildsMutingInfo> _observedGuildsMutingInfoCache = new Dictionary<ulong, ObservedGuildsMutingInfo>();
//IMPORTANT: make sure to initialize on bot start:
public Dictionary<ulong, ObservedVoiceChannelInfo> _observedVoiceChannelsCache = new Dictionary<ulong, ObservedGuildsMutingInfo>();

private async Task OnUserVoiceStateUpdated(SocketUser socketUser, SocketVoiceState oldSocketVoiceState,
    SocketVoiceState newSocketVoiceState)
{
    SocketGuildUser socketGuildUser = socketUser as SocketGuildUser;
    
    if (!oldSocketVoiceState.IsMuted && newSocketVoiceState.IsMuted && 
        _observedGuildsMutingInfoCache.TryGetValue(newSocketVoiceState.VoiceChannel.Guild.Id, out ObservedGuildsMutingInfo newObservedMutinglInfo))
    {
        // a user was muted by someone
        if (_observedVoiceChannelsCache.TryGetValue(oldSocketVoiceState.VoiceChannel.Id, out ObservedVoiceChannelInfo oldObservedVoiceChannelInfo)&&
            !oldObservedVoiceChannelInfo.MutedUserIds.Contains(socketGuildUser.Id))
        {
            // the user was not muted by the bot
            // meaning that the user muted theirselfs or were muted by admin
            newObservedMutingInfo.SelfOrAdminMutedUsersIds.Add(socketGuildUser.Id);
        }
    }
    else if (!oldSocketVoiceState.IsMuted && newSocketVoiceState.IsMuted && 
        _observedGuildsMutingInfoCache.TryGetValue(newSocketVoiceState.VoiceChannel.Guild.Id, out ObservedGuildsMutingInfo newObservedMutinglInfo))
    {
        // a user was un-muted by someone
        newObservedMutingInfo.SelfOrAdminMutedUsersIds.Remove(socketGuildUser.Id);
    }
    else if (!newSocketVoiceState.IsMuted &&
        newSocketVoiceState.VoiceChannel != null &&
        _observedVoiceChannelsCache.TryGetValue(newSocketVoiceState.VoiceChannel.Id,
        out ObservedVoiceChannelInfo newObservedVoiceChannelInfo) &&
        !newObservedVoiceChannelInfo.Muted)
    {
        // user has joined a un-muted channel
        if(_observedGuildsMutingInfoCache.TryGetValue(newSocketVoiceState.VoiceChannel.Guild.Id, out ObservedGuildsMutingInfo newObservedGuildsMutingInfo)&&
            !newObservedGuildsMutingInfo.SelfOrAdminMutedUsersIds.Contains(socketGuildUser.Id))
        {
            await SetUserVoiceState(socketGuildUser, false);
        }
    }
    else if (newSocketVoiceState.IsMuted &&
        newSocketVoiceState.VoiceChannel == null &&
        _observedVoiceChannelsCache.TryGetValue(oldSocketVoiceState.VoiceChannel.Id,
            out ObservedVoiceChannelInfo oldObservedVoiceChannelInfo) &&
        oldObservedVoiceChannelInfo.Muted)
    {
        oldObservedVoiceChannelInfo.MutedUserIds.Remove(socketGuildUser.Id);
    }
    else if (!newSocketVoiceState.IsMuted &&
         newSocketVoiceState.VoiceChannel != null &&
         _observedVoiceChannelsCache.TryGetValue(newSocketVoiceState.VoiceChannel.Id,
             out ObservedVoiceChannelInfo newObservedVoiceChannelInfo) &&
             newObservedVoiceChannelInfo.Muted)
    {
        await SetUserVoiceState(socketGuildUser, true);
        newObservedVoiceChannelInfo.MutedUserIds.Add(socketGuildUser.Id);
    }
}

private async Task SetUserVoiceState(SocketGuildUser socketGuildUser, bool muted)
{
    await socketGuildUser.ModifyAsync(guildUserProperties => { guildUserProperties.Mute = muted; });
}

我希望这会有所帮助。