ExtCord

A modular Discord bot framework built on top of discord.js using TypeScript. Requires Node.js 16 or newer. SQLite and MariaDB/MySQL databases are supported by TypeORM. Other databases supported by TypeORM may also work.

The commands can be invoked with both normal text messages and the new slash command system of Discord. The resulting bot is highly customizable by users: the bot owner can configure multiple languages for users to select from, the prefix used for text commands is configurable by users, command aliases can be managed by users, and command permissions can be configured by server owners.

Creating modules for the bot is easy: translations, permission management and help messages are handled by ExtCord. Everything is strongly typed, preventing potential errors.

Status

The project is usable but there may be bugs and unfinished/missing features. Currently, only one module is implemented, which provides music playing functionality.

Usage

1. Clone the repository.
2. Run npm install. This will install dependencies and build the bot and the included modules.
3. Run npm start. This will fail on the first run, but it will create the config.hjson file.
4. Configure the bot in config.hjson. At a minimum the Discord login token needs to be supplied.
5. Run npm start again to start the bot.

Screenshots

Traditional message-based commands:

Slash commands:

Command argument verification:

Configuration

The automatically generated config.hjson file is the main configuration file. Comments in the file explain the configuration options.

Available languages are stored in the languages directory. By default, the bot will automatically generate a commented English language file. This can be copied and translated to support other languages.

The privileges directory contains the default permission grants. admin.hjson contains permissions for server administrators, everyone.hjson contains permissions for everyone, and host.json contains permissions for the bot owner (configured in config.hjson).

Modules

Modules can be written in either JavaScript or TypeScript. TypeScript is recommended.

Module files are denoted by a header. If the module requires additional npm packages, they can be specified as depencencies here and they will be automatically installed when the bot starts.

Example module in TypeScript (when placed in src_modules/example.ts):

// extcord module
// requires package-name1 package-name2

import { Bot, MessagePhrase, Module, SimpleCommand } from "..";

const pongPhrase = new MessagePhrase(
    {
        description: "Sends a pong!",
        name: "pong",
    },
    // the text message to send when embeds are disabled
    "Pong {name}!",
    // the embed to send normally
    {
        description: "Pong {name}!",
        timestamp: false,
        title: "Pong!",
    },
    // this is used to define arguments passed to the templates above
    // and their descriptions
    {
        name: "Who sent the command",
    },
);

const pongCommand = new SimpleCommand(
    {
        // defines who is permitted to execute this command by default
        allowedPrivileges: ["everyone"],
        author: "author",
        description: "Send a pong!",
        // the default name used when calling the command
        name: "pong",
    },
    // command arguments, this command has no arguments
    [],
    // function to call to execute the command
    async (context) => {
        const name = context.member.member.nickname || "";
        // respond with the phrase defined above, passing name to the templates
        await context.respond(pongPhrase, {
            name,
        });
    },
);

// register the phrase
pongCommand.addPhrases(pongPhrase);

export default class ExampleModule extends Module {
    constructor(bot: Bot) {
        super(bot, "author", "module-name");
        // register the command
        this.registerCommand(pongCommand);
    }
}

License

Copyright (C) 2022 Lassi Säike

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.