mirror of
https://gitlab.com/Kwoth/nadekobot.git
synced 2025-09-10 17:28:27 -04:00
365 lines
14 KiB
C#
365 lines
14 KiB
C#
using NadekoBot.Common.Collections;
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using NadekoBot.Extensions;
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using System.Collections.Immutable;
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using NadekoBot.Common.Configs;
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using NadekoBot.Db;
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namespace NadekoBot.Services;
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public class CommandHandler : INService
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{
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public const int GlobalCommandsCooldown = 750;
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private readonly DiscordSocketClient _client;
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private readonly CommandService _commandService;
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private readonly BotConfigService _bss;
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private readonly Bot _bot;
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private readonly IBehaviourExecutor _behaviourExecutor;
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private readonly IServiceProvider _services;
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private readonly ConcurrentDictionary<ulong, string> _prefixes;
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public event Func<IUserMessage, CommandInfo, Task> CommandExecuted = delegate { return Task.CompletedTask; };
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public event Func<CommandInfo, ITextChannel, string, Task> CommandErrored = delegate { return Task.CompletedTask; };
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public event Func<IUserMessage, Task> OnMessageNoTrigger = delegate { return Task.CompletedTask; };
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//userid/msg count
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public ConcurrentDictionary<ulong, uint> UserMessagesSent { get; } = new ConcurrentDictionary<ulong, uint>();
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public ConcurrentHashSet<ulong> UsersOnShortCooldown { get; } = new ConcurrentHashSet<ulong>();
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private readonly Timer _clearUsersOnShortCooldown;
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public CommandHandler(
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DiscordSocketClient client,
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DbService db,
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CommandService commandService,
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BotConfigService bss,
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Bot bot,
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IBehaviourExecutor behaviourExecutor,
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IServiceProvider services)
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{
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_client = client;
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_commandService = commandService;
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_bss = bss;
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_bot = bot;
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_behaviourExecutor = behaviourExecutor;
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_db = db;
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_services = services;
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_clearUsersOnShortCooldown = new(_ =>
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{
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UsersOnShortCooldown.Clear();
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}, null, GlobalCommandsCooldown, GlobalCommandsCooldown);
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_prefixes = bot.AllGuildConfigs
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.Where(x => x.Prefix != null)
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.ToDictionary(x => x.GuildId, x => x.Prefix)
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.ToConcurrent();
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}
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public string GetPrefix(IGuild guild) => GetPrefix(guild?.Id);
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public string GetPrefix(ulong? id = null)
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{
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if (id is null || !_prefixes.TryGetValue(id.Value, out var prefix))
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return _bss.Data.Prefix;
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return prefix;
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}
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public string SetDefaultPrefix(string prefix)
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{
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if (string.IsNullOrWhiteSpace(prefix))
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throw new ArgumentNullException(nameof(prefix));
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_bss.ModifyConfig(bs =>
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{
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bs.Prefix = prefix;
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});
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return prefix;
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}
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public string SetPrefix(IGuild guild, string prefix)
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{
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if (string.IsNullOrWhiteSpace(prefix))
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throw new ArgumentNullException(nameof(prefix));
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if (guild is null)
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throw new ArgumentNullException(nameof(guild));
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using (var uow = _db.GetDbContext())
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{
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var gc = uow.GuildConfigsForId(guild.Id, set => set);
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gc.Prefix = prefix;
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uow.SaveChanges();
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}
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_prefixes[guild.Id] = prefix;
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return prefix;
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}
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public async Task ExecuteExternal(ulong? guildId, ulong channelId, string commandText)
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{
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if (guildId != null)
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{
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var guild = _client.GetGuild(guildId.Value);
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if (!(guild?.GetChannel(channelId) is SocketTextChannel channel))
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{
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Log.Warning("Channel for external execution not found.");
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return;
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}
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try
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{
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IUserMessage msg = await channel.SendMessageAsync(commandText).ConfigureAwait(false);
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msg = (IUserMessage)await channel.GetMessageAsync(msg.Id).ConfigureAwait(false);
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await TryRunCommand(guild, channel, msg).ConfigureAwait(false);
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//msg.DeleteAfter(5);
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}
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catch { }
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}
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}
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public Task StartHandling()
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{
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_client.MessageReceived += msg => { var _ = Task.Run(() => MessageReceivedHandler(msg)); return Task.CompletedTask; };
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return Task.CompletedTask;
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}
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private const float _oneThousandth = 1.0f / 1000;
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private readonly DbService _db;
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private Task LogSuccessfulExecution(IUserMessage usrMsg, ITextChannel channel, params int[] execPoints)
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{
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if (_bss.Data.ConsoleOutputType == ConsoleOutputType.Normal)
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{
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Log.Information($"Command Executed after " + string.Join("/", execPoints.Select(x => (x * _oneThousandth).ToString("F3"))) + "s\n\t" +
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"User: {0}\n\t" +
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"Server: {1}\n\t" +
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"Channel: {2}\n\t" +
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"Message: {3}",
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usrMsg.Author + " [" + usrMsg.Author.Id + "]", // {0}
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channel is null ? "PRIVATE" : channel.Guild.Name + " [" + channel.Guild.Id + "]", // {1}
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channel is null ? "PRIVATE" : channel.Name + " [" + channel.Id + "]", // {2}
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usrMsg.Content // {3}
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);
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}
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else
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{
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Log.Information("Succ | g:{0} | c: {1} | u: {2} | msg: {3}",
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channel?.Guild.Id.ToString() ?? "-",
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channel?.Id.ToString() ?? "-",
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usrMsg.Author.Id,
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usrMsg.Content.TrimTo(10));
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}
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return Task.CompletedTask;
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}
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private void LogErroredExecution(string errorMessage, IUserMessage usrMsg, ITextChannel channel, params int[] execPoints)
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{
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if (_bss.Data.ConsoleOutputType == ConsoleOutputType.Normal)
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{
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Log.Warning($"Command Errored after " + string.Join("/", execPoints.Select(x => (x * _oneThousandth).ToString("F3"))) + "s\n\t" +
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"User: {0}\n\t" +
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"Server: {1}\n\t" +
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"Channel: {2}\n\t" +
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"Message: {3}\n\t" +
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"Error: {4}",
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usrMsg.Author + " [" + usrMsg.Author.Id + "]", // {0}
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channel is null ? "PRIVATE" : channel.Guild.Name + " [" + channel.Guild.Id + "]", // {1}
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channel is null ? "PRIVATE" : channel.Name + " [" + channel.Id + "]", // {2}
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usrMsg.Content,// {3}
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errorMessage
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//exec.Result.ErrorReason // {4}
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);
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}
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else
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{
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Log.Warning("Err | g:{0} | c: {1} | u: {2} | msg: {3}\n\tErr: {4}",
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channel?.Guild.Id.ToString() ?? "-",
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channel?.Id.ToString() ?? "-",
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usrMsg.Author.Id,
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usrMsg.Content.TrimTo(10),
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errorMessage);
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}
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}
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private async Task MessageReceivedHandler(SocketMessage msg)
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{
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try
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{
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if (msg.Author.IsBot || !_bot.IsReady) //no bots, wait until bot connected and initialized
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return;
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if (!(msg is SocketUserMessage usrMsg))
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return;
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#if !GLOBAL_NADEKO
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// track how many messagges each user is sending
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UserMessagesSent.AddOrUpdate(usrMsg.Author.Id, 1, (key, old) => ++old);
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#endif
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var channel = msg.Channel as ISocketMessageChannel;
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var guild = (msg.Channel as SocketTextChannel)?.Guild;
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await TryRunCommand(guild, channel, usrMsg).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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Log.Warning(ex, "Error in CommandHandler");
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if (ex.InnerException != null)
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{
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Log.Warning(ex.InnerException, "Inner Exception of the error in CommandHandler");
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}
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}
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}
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public async Task TryRunCommand(SocketGuild guild, ISocketMessageChannel channel, IUserMessage usrMsg)
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{
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var startTime = Environment.TickCount;
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var blocked = await _behaviourExecutor.RunEarlyBehavioursAsync(guild, usrMsg);
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if (blocked)
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return;
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var blockTime = Environment.TickCount - startTime;
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var messageContent = await _behaviourExecutor.RunInputTransformersAsync(guild, usrMsg);
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var prefix = GetPrefix(guild?.Id);
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var isPrefixCommand = messageContent.StartsWith(".prefix", StringComparison.InvariantCultureIgnoreCase);
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// execute the command and measure the time it took
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if (messageContent.StartsWith(prefix, StringComparison.InvariantCulture) || isPrefixCommand)
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{
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var (Success, Error, Info) = await ExecuteCommandAsync(new(_client, usrMsg), messageContent, isPrefixCommand ? 1 : prefix.Length, _services, MultiMatchHandling.Best).ConfigureAwait(false);
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startTime = Environment.TickCount - startTime;
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if (Success)
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{
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await LogSuccessfulExecution(usrMsg, channel as ITextChannel, blockTime, startTime).ConfigureAwait(false);
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await CommandExecuted(usrMsg, Info).ConfigureAwait(false);
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return;
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}
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else if (Error != null)
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{
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LogErroredExecution(Error, usrMsg, channel as ITextChannel, blockTime, startTime);
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if (guild != null)
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await CommandErrored(Info, channel as ITextChannel, Error).ConfigureAwait(false);
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}
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}
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else
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{
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await OnMessageNoTrigger(usrMsg).ConfigureAwait(false);
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}
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await _behaviourExecutor.RunLateExecutorsAsync(guild, usrMsg);
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}
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public Task<(bool Success, string Error, CommandInfo Info)> ExecuteCommandAsync(CommandContext context, string input, int argPos, IServiceProvider serviceProvider, MultiMatchHandling multiMatchHandling = MultiMatchHandling.Exception)
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=> ExecuteCommand(context, input.Substring(argPos), serviceProvider, multiMatchHandling);
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public async Task<(bool Success, string Error, CommandInfo Info)> ExecuteCommand(CommandContext context, string input, IServiceProvider services, MultiMatchHandling multiMatchHandling = MultiMatchHandling.Exception)
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{
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var searchResult = _commandService.Search(context, input);
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if (!searchResult.IsSuccess)
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return (false, null, null);
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var commands = searchResult.Commands;
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var preconditionResults = new Dictionary<CommandMatch, PreconditionResult>();
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foreach (var match in commands)
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{
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preconditionResults[match] = await match.Command.CheckPreconditionsAsync(context, services).ConfigureAwait(false);
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}
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var successfulPreconditions = preconditionResults
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.Where(x => x.Value.IsSuccess)
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.ToArray();
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if (successfulPreconditions.Length == 0)
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{
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//All preconditions failed, return the one from the highest priority command
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var bestCandidate = preconditionResults
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.OrderByDescending(x => x.Key.Command.Priority)
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.FirstOrDefault(x => !x.Value.IsSuccess);
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return (false, bestCandidate.Value.ErrorReason, commands[0].Command);
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}
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var parseResultsDict = new Dictionary<CommandMatch, ParseResult>();
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foreach (var pair in successfulPreconditions)
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{
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var parseResult = await pair.Key.ParseAsync(context, searchResult, pair.Value, services).ConfigureAwait(false);
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if (parseResult.Error == CommandError.MultipleMatches)
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{
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IReadOnlyList<TypeReaderValue> argList, paramList;
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switch (multiMatchHandling)
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{
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case MultiMatchHandling.Best:
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argList = parseResult.ArgValues.Select(x => x.Values.OrderByDescending(y => y.Score).First()).ToImmutableArray();
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paramList = parseResult.ParamValues.Select(x => x.Values.OrderByDescending(y => y.Score).First()).ToImmutableArray();
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parseResult = ParseResult.FromSuccess(argList, paramList);
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break;
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}
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}
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parseResultsDict[pair.Key] = parseResult;
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}
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// Calculates the 'score' of a command given a parse result
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float CalculateScore(CommandMatch match, ParseResult parseResult)
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{
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float argValuesScore = 0, paramValuesScore = 0;
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if (match.Command.Parameters.Count > 0)
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{
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var argValuesSum = parseResult.ArgValues?.Sum(x => x.Values.OrderByDescending(y => y.Score).FirstOrDefault().Score) ?? 0;
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var paramValuesSum = parseResult.ParamValues?.Sum(x => x.Values.OrderByDescending(y => y.Score).FirstOrDefault().Score) ?? 0;
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argValuesScore = argValuesSum / match.Command.Parameters.Count;
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paramValuesScore = paramValuesSum / match.Command.Parameters.Count;
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}
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var totalArgsScore = (argValuesScore + paramValuesScore) / 2;
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return match.Command.Priority + totalArgsScore * 0.99f;
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}
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//Order the parse results by their score so that we choose the most likely result to execute
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var parseResults = parseResultsDict
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.OrderByDescending(x => CalculateScore(x.Key, x.Value));
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var successfulParses = parseResults
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.Where(x => x.Value.IsSuccess)
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.ToArray();
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if (successfulParses.Length == 0)
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{
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//All parses failed, return the one from the highest priority command, using score as a tie breaker
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var bestMatch = parseResults
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.FirstOrDefault(x => !x.Value.IsSuccess);
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return (false, bestMatch.Value.ErrorReason, commands[0].Command);
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}
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var cmd = successfulParses[0].Key.Command;
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// Bot will ignore commands which are ran more often than what specified by
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// GlobalCommandsCooldown constant (miliseconds)
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if (!UsersOnShortCooldown.Add(context.Message.Author.Id))
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return (false, null, cmd);
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//return SearchResult.FromError(CommandError.Exception, "You are on a global cooldown.");
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var blocked = await _behaviourExecutor.RunLateBlockersAsync(context, cmd);
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if (blocked)
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return (false, null, cmd);
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//If we get this far, at least one parse was successful. Execute the most likely overload.
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var chosenOverload = successfulParses[0];
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var execResult = (ExecuteResult)await chosenOverload.Key.ExecuteAsync(context, chosenOverload.Value, services).ConfigureAwait(false);
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if (execResult.Exception != null && (!(execResult.Exception is HttpException he) || he.DiscordCode != DiscordErrorCode.InsufficientPermissions))
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{
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Log.Warning(execResult.Exception, "Command Error");
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}
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return (true, null, cmd);
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}
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} |