Archived
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352 lines
14 KiB
Markdown
# CommandBot
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A Discord.js based framework that makes creating Discord bots with support for slash commands easy and fast.
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## Features
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- Support for slash commands
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- Intuitive usage
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- Good customization
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- Permission system
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- Built-in help command
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- Built-in information messages
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- Automatic error catching
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- Large documentation in README and using JSDoc
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- Written in TypeScript
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## Table of contents
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- [CommandBot](#commandbot)
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- [Features](#features)
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- [Table of contents](#table-of-contents)
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- [Instalation](#installation)
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- [System requirements](#system-requirements)
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- [Creating a project](#creating-a-project)
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- [Registering Discord app](#registering-discord-app)
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- [Creating application](#creating-application)
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- [Commands](#commands)
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- [Creating and registering a command](#creating-and-registering-a-command)
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- [Command function](#command-function)
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- [Arguments](#arguments)
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- [Return value](#return-value)
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- [Errors](#errors)
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- [Parameters](#parameters)
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- [Types](#types)
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- [Defining](#defining)
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- [Reading input value](#reading-input-value)
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- [Events](#events)
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- [Handling events](#handling-events)
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- [Event types](#event-types)
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- [Messages](#messages)
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- [Information messages](#information-messages)
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- [Help message](#help-message)
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- [Issues](#issues)
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# Installation
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## System requirements
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- _Node.js_ 16.6.0 or newer
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- _npm_ or _yarn_ package manager
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## Creating a project
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### Registering Discord app
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1. Visit [Discord Developer Portal](https://discord.com/developers/) and create an app
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2. Navigate to the _Bot_ section and register a bot
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3. Navigate to _OAuth 2_ section, select _bot_ and _application.commands_ scopes and check bot permissions
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4. Copy the link and add your bot to the servers
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### Creating application
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1. Create empty directory
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2. Run `npm init -y` or `yarn init -y`
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3. Add the CommandBot package
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```javascript
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// npm
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npm install commandbot@latest
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// yarn
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yarn add commandbot@latest
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```
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4. Create _index.js_ file
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5. Import the CommandBot package
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```javascript
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// CommonJS
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const { Bot, Command } = require("commandbot");
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// ES Modules (to use ESM add "type": "module" to your package.json file)
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import { Bot, Command } from "commandbot";
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```
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6. Initialize the bot instance
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```javascript
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const bot = new Bot({
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name: "YOUR_BOT_NAME",
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prefix: "BOT_PREFIX",
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parameterSeparator: ",",
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clientOptions: {
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intents: [..."DISCORD_API_INTENTS"],
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},
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token: "DISCORD_BOT_TOKEN",
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applicationId: "APPLICATION_ID",
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});
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```
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Properties (\* - required):
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- **name\*** - _string_ - bot name
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- **prefix** - _string_ - bot prefix to use with text commands (if undefined, only slash commands will be available)
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- **parameterSeparator** - _string_ - used to separate parameters from messages (default: ',')
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- **clientOptions** - _[ClientOptions](https://discord.js.org/#/docs/main/stable/typedef/ClientOptions)_ - Discord.js client options
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- **token\*** - _string_ - Discord bot token
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- **applicationId\*** - _string_ - Discord application ID
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7. Create and add commands to the _Bot_ instance (see [Commands](#commands))
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8. Start your bot
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```javascript
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bot.start(
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port, // If passed, the application will create a HTTP server
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true // If true or undefined, the app will register all slash commands in the Discord API
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);
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```
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> **WARNING!** All commands have to be added to the instance **before starting the bot**. Adding commands while the bot is running is not possible and can cause issues.
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# Commands
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## Creating and registering a command
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To create a command, initialize a _Command_ object
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Example:
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```javascript
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const cmdGreet = new Command({
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name: "greet",
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parameters: [
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{
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name: "name",
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description: "Name that will be greeted",
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optional: true,
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type: "string",
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},
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],
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aliases: ["hello"],
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description: "Welcomes someone",
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usage: "[name]",
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permissionCheck: "ALL",
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permissions: ["SEND_MESSAGES"],
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guilds: undefined,
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visible: true,
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slash: true,
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announceSuccess: true,
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function: function(p. m) {
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if(p('name')) {
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return `Hello, ${p('name')}!`
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}
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else {
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return 'Hello!'
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}
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}
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});
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// Register
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bot.commands.add(cmdGreet)
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```
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Properties (\* - required):
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- **name\*** - _string_ - command name
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- **parameters** - _ParameterSchema[]_ - array of parameters (see [Parameters](#parameters))
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- **aliases** - _string | string[]_ - array of alternative strings that can call this command (not available for slash commands)
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- **description** - _string_ - command description
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- **usage** - _string_ - command usage visible in the help message (if not defined, usage string will be automatically generated based on defined parameters)
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- **permissionCheck** - _"ALL" | "ANY"_ - whether to check if caller has all defined permission or at least one of them
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- **permissions** - _[PermissionResolvable](https://discord.js.org/#/docs/main/stable/typedef/PermissionResolvable) | (m?: [Message](https://discord.js.org/#/docs/main/stable/class/Message) | [CommandInteraction](https://discord.js.org/#/docs/main/stable/class/CommandInteraction)) => boolean_ - permissions required to run this command
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- **guilds** - _string[]_ - array of servers IDs in which this command will be available (if slash command)
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- **visible** - _boolean_ - whether this command is visible in the help message
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- **slash** - _boolean_ - whether this command should be registered as a slash command
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- **announceSuccess** - _boolean_ - whether a command reply should be sent automatically if no other response is defined or the reply should be deleted
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- **function\*** - _(p: function, m?: [Message](https://discord.js.org/#/docs/main/stable/class/Message) | [CommandInteraction](https://discord.js.org/#/docs/main/stable/class/CommandInteraction)) => void | [MessageEmbed]() | string | [ReplyMessageOptions](https://discord.js.org/#/docs/main/stable/typedef/ReplyMessageOptions)_ - function that will be executed on call
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Register your command in bot client using:
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```javascript
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bot.commands.add(cmd);
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```
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where (\* - required):
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- **cmd** - _Command_
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## Command function
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### Arguments
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- **p** - _function_ - call this function with parameter name to fetch parameter value
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- **m?** - _[Message](https://discord.js.org/#/docs/main/stable/class/Message) | [CommandInteraction](https://discord.js.org/#/docs/main/stable/class/CommandInteraction)_ - interaction object
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### Return value
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If function returns (also after resolving a _Promise_):
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- **void** - If _announceSuccess_ property is _true_, bot will automatically send a SUCCESS message (see [Messages](#messages)). If command has been called using slash commands and _announceSuccess_ property is set to _false_, reply will be automatically deleted
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- **string** - this string will be sent in a reply
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- **[MessageEmbed](https://discord.js.org/#/docs/main/stable/class/MessageEmbed)** - embedded content will be sent in a reply
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- **[ReplyMessageOptions](https://discord.js.org/#/docs/main/stable/typedef/ReplyMessageOptions)** - these options will get used to send a reply
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It is possible to manually send replies directly from the command function using the **m** argument. If you are using slash commands don't forget to use the _[editReply](https://discord.js.org/#/docs/main/stable/class/CommandInteraction?scrollTo=editReply)_ method instead of the _reply_ method since a **reply is already deferred** when a command function is being called (read more [here](https://discord.com/developers/docs/interactions/receiving-and-responding)) If you try to create a new reply, you app will throw an error that will result a crash. If you manually reply to a slash command interaction and return _void_ from the command function, a SUCCESS message will not be sent or reply will not get deleted (if you want to disable SUCCESS messages on prefix interactions set _announceSuccess_ property to _false_).
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### Errors
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If a command function will throw an error, it will automatically get caught and your bot will send an ERROR message (see [Messages](#messages)). The app **will not** crash.
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## Parameters
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### Types
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- **string** - text value
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- **boolean** - True or False
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- **number** - number (double) value
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- **user** - _ObjectID_ object with ID value (shown as selection menu in Discord)
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- **role** - _ObjectID_ object with ID value (shown as selection menu in Discord)
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- **channel** - _ObjectID_ object with ID value (shown as selection menu in Discord)
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- **mentionable** - _ObjectID_ object with ID value (shown as selection menu in Discord)
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To get an entity ID from _ObjectID_ use the _value_ property. You can also call _toObject_ method to retrieve full entity object from Discord API
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```javascript
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ObjectID.toObject(g, "TYPE");
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```
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where (\* - required):
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- **g\*** - _Guild_ - Guild object to fetch from
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- **"TYPE"\*** - _"user' | "role" | "channel"_ - defines the entity type
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### Defining
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Example:
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```javascript
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{
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name: "user",
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description: "User to mention",
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optional: false,
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type: "user"
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}
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```
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Properties (\* - required):
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- **name\*** - _string_ - parameter name
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- **description** - _string_ - parameter description
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- **optional\*** - _boolean_ - whether this parameter is optional
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- **type\*** - _"string" | "boolean" | "number" | "user" | "role" | "channel" | "mentionable"_ - parameter type
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- **choices** - _string[]_ - parameter value choices (to use this, set type to "string")
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### Reading input value
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To read parameter values use a function that is passed in the first argument of a call function (defined in _function_ parameter in _Command_ object)
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```javascript
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p(query, returnType);
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```
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where (\* - required):
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- **query\*** - _string_ - parameter name
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- **returnType** - _"value" | "object"_ - whether to return only parameter value or a full object
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```javascript
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function: (p, m) => {
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const userObj = p('user')
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if(userObj) {
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const user = user.toObject(m.guild, "user");
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if(user) {
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return `Hello, ${user.toString()}`
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}
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else {
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throw new Error('User not found')
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}
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}
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}
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```
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# Events
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## Handling events
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CommandBot is using _[EventEmitter](https://nodejs.org/api/events.html)_ that is built into Node.js. You can listen to events using the _on_ method.
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```javascript
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bot.on(eventType, callbackFn);
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```
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where (\* - required):
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- **eventType\*** - _"READY" | "COMMAND" | "MESSAGE" | "ERROR"_ - type of event that you want to listen to
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- **callbackFn\*** - _Function_ - a function that will get executed when the event is emitted
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## Event types
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- **READY** - emitted when the app has finished its initialization process
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- **MESSAGE** - emitted when message is created (similar to _messageCreate_ event from Discord.js) (not emitted when command gets triggered) - a _[Message](https://discord.js.org/#/docs/main/stable/class/Message)_ object is being passed to the first argument
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- **COMMAND** - emitted when command gets triggered - a _[Message](https://discord.js.org/#/docs/main/stable/class/Message)_ or _[CommandInteraction](https://discord.js.org/#/docs/main/stable/class/CommandInteraction)_ object is being passed to the first argument; an object containing fetched _Command_ object and input parameters is being passed to the second
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- **ERROR** - emitted when a command function throws an error - an _Error_ object is being passed to the first argument
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# Messages
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## Information messages
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There are 4 information messages:
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- **ERROR** - "An error occurred" message (sent when error occurs)
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- **SUCCESS** - "Task completed successfully" message (sent after successfully executing a command function)
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- **PERMISSION** - "Insufficient permissions" message (sent when the caller doesn't have enough permissions)
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- **NOT_FOUND** - "Command not found" message (sent when someone tries to call a command that does not exist)
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Their configuration is stored in _messages.system_ property.
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Each of these messages can be customized with these properties (\* - required):
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- **enabled\*** - _boolean_ - enables or disables the message
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- **title\*** - _string_ - title of the message
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- **bottomText** - _string_ - text below the title (also known as description)
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- **accentColor** - _ColorResolvable_ - embed color
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- **displayDetails** - _boolean_ - whether to display additional informations
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- **showTimestamp** - _boolean_ - whether to show date and time in the footer
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- **footer** - _string_ - message footer
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- **deleteTimeout** - _number_ - time (ms) after the message gets deleted
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There is also a global _deleteTimeout_ property (_messages.system.deleteTimeout_)
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## Help message
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Its configuration is stored in _messages.help_ property.
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You can customize the help message with these properties (\* - required):
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- **enabled\*** - _boolean_ - enables or disables the message
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- **title\*** - _string_ - title of the message
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- **bottomText\*** - _string_ - text below the title (also known as description)
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- **accentColor\*** - _ColorResolvable_ - embed color
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- **description\*** - _string_ - description shown in the message itself
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- **usage\*** - _string_ - usage displayed in the message itself
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- **visible\*** - _boolean_ - whether to show the help command in the list
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# Issues
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Since this package is created by only 1 person it may contain some bugs or behave weirdly. If you notice any problem, typo etc, please create an issue in the _Issues_ tab on GitHub.
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Thank you.
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Created with ❤️ by [GRZANA](https://github.com/GRZ4NA)
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