Example-Bots/DSPlus.Examples.CSharp.Ex02/Program.cs at master · inftord/Example-Bots · GitHub

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// THIS FILE IS A PART OF EMZI0767'S BOT EXAMPLES

// --------

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

// --------

// This is a commands example. It shows how to properly utilize

// CommandsNext, as well as use its advanced functionality.

using System;

using System.IO;

using System.Text;

using System.Threading.Tasks;

using DSharpPlus;

using DSharpPlus.CommandsNext;

using DSharpPlus.CommandsNext.Exceptions;

using DSharpPlus.Entities;

using DSharpPlus.EventArgs;

using Microsoft.Extensions.Logging;

using Newtonsoft.Json;

namespace DSPlus.Examples

{

public class Program

{

public readonly EventId BotEventId = new EventId(42, "Bot-Ex02");

public DiscordClient Client { get; set; }

public CommandsNextExtension Commands { get; set; }

public static void Main(string[] args)

{

// since we cannot make the entry method asynchronous,

// let's pass the execution to asynchronous code

var prog = new Program();

prog.RunBotAsync().GetAwaiter().GetResult();

}

public async Task RunBotAsync()

{

// first, let's load our configuration file

var json = "";

using (var fs = File.OpenRead("config.json"))

using (var sr = new StreamReader(fs, new UTF8Encoding(false)))

json = await sr.ReadToEndAsync();

// next, let's load the values from that file

// to our client's configuration

var cfgjson = JsonConvert.DeserializeObject<ConfigJson>(json);

var cfg = new DiscordConfiguration

{

Token = cfgjson.Token,

TokenType = TokenType.Bot,

AutoReconnect = true,

MinimumLogLevel = LogLevel.Debug,

};

// then we want to instantiate our client

this.Client = new DiscordClient(cfg);

// next, let's hook some events, so we know

// what's going on

this.Client.Ready += this.Client_Ready;

this.Client.GuildAvailable += this.Client_GuildAvailable;

this.Client.ClientErrored += this.Client_ClientError;

// up next, let's set up our commands

var ccfg = new CommandsNextConfiguration

{

// let's use the string prefix defined in config.json

StringPrefixes = new[] { cfgjson.CommandPrefix },

// enable responding in direct messages

EnableDms = true,

// enable mentioning the bot as a command prefix

EnableMentionPrefix = true

};

// and hook them up

this.Commands = this.Client.UseCommandsNext(ccfg);

// let's hook some command events, so we know what's

// going on

this.Commands.CommandExecuted += this.Commands_CommandExecuted;

this.Commands.CommandErrored += this.Commands_CommandErrored;

// let's add a converter for a custom type and a name

var mathopcvt = new MathOperationConverter();

Commands.RegisterConverter(mathopcvt);

Commands.RegisterUserFriendlyTypeName<MathOperation>("operation");

// up next, let's register our commands

this.Commands.RegisterCommands<ExampleUngrouppedCommands>();

this.Commands.RegisterCommands<ExampleGrouppedCommands>();

this.Commands.RegisterCommands<ExampleExecutableGroup>();

// set up our custom help formatter

this.Commands.SetHelpFormatter<SimpleHelpFormatter>();

// finally, let's connect and log in

await this.Client.ConnectAsync();

// when the bot is running, try doing <prefix>help

// to see the list of registered commands, and

// <prefix>help <command> to see help about specific

// command.

// and this is to prevent premature quitting

await Task.Delay(-1);

}

private Task Client_Ready(DiscordClient sender, ReadyEventArgs e)

{

// let's log the fact that this event occured

sender.Logger.LogInformation(BotEventId, "Client is ready to process events.");

// since this method is not async, let's return

// a completed task, so that no additional work

// is done

return Task.CompletedTask;

}

private Task Client_GuildAvailable(DiscordClient sender, GuildCreateEventArgs e)

{

// let's log the name of the guild that was just

// sent to our client

sender.Logger.LogInformation(BotEventId, $"Guild available: {e.Guild.Name}");

// since this method is not async, let's return

// a completed task, so that no additional work

// is done

return Task.CompletedTask;

}

private Task Client_ClientError(DiscordClient sender, ClientErrorEventArgs e)

{

// let's log the details of the error that just

// occured in our client

sender.Logger.LogError(BotEventId, e.Exception, "Exception occured");

// since this method is not async, let's return

// a completed task, so that no additional work

// is done

return Task.CompletedTask;

}

private Task Commands_CommandExecuted(CommandsNextExtension sender, CommandExecutionEventArgs e)

{

// let's log the name of the command and user

e.Context.Client.Logger.LogInformation(BotEventId, $"{e.Context.User.Username} successfully executed '{e.Command.QualifiedName}'");

// since this method is not async, let's return

// a completed task, so that no additional work

// is done

return Task.CompletedTask;

}

private async Task Commands_CommandErrored(CommandsNextExtension sender, CommandErrorEventArgs e)

{

// let's log the error details

e.Context.Client.Logger.LogError(BotEventId, $"{e.Context.User.Username} tried executing '{e.Command?.QualifiedName ?? "<unknown command>"}' but it errored: {e.Exception.GetType()}: {e.Exception.Message ?? "<no message>"}", DateTime.Now);

// let's check if the error is a result of lack

// of required permissions

if (e.Exception is ChecksFailedException ex)

{

// yes, the user lacks required permissions,

// let them know

var emoji = DiscordEmoji.FromName(e.Context.Client, ":no_entry:");

// let's wrap the response into an embed

var embed = new DiscordEmbedBuilder

{

Title = "Access denied",

Description = $"{emoji} You do not have the permissions required to execute this command.",

Color = new DiscordColor(0xFF0000) // red

};

await e.Context.RespondAsync(embed);

}

// this structure will hold data from config.json

public struct ConfigJson

{

[JsonProperty("token")]

public string Token { get; private set; }

[JsonProperty("prefix")]

public string CommandPrefix { get; private set; }

}

Example-Bots/DSPlus.Examples.CSharp.Ex02/Program.cs at master · inftord/Example-Bots · GitHub

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