Merge branch 'init-setup' into 'master'
Setting up a simple bot command framework and linter/formatter See merge request csc/discord-bot!1
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commit
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{
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"parser": "@typescript-eslint/parser", // Specifies the ESLint parser
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"env": {
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"ecmaVersion": 2020 // Allows for the parsing of modern ECMAScript features
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},
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"extends": [
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"plugin:@typescript-eslint/recommended", // Uses the recommended rules from the @typescript-eslint/eslint-plugin
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"prettier/@typescript-eslint", // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
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"plugin:prettier/recommended"
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]
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}
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/node_modules
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.env
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{
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"semi": true,
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"trailingComma": "none",
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"singleQuote": true,
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"printWidth": 120
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}
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# Codey Bot
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## Required environment variables
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- `BOT_TOKEN`: the token found in the bot user account.
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- `NOTIF_CHANNEL_ID`: the ID of the channel the bot will send system notifications to.
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## Running the bot locally
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1. Run `yarn` to install dependencies.
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1. Add the required environment variables in a `.env` file in the root directory.
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1. Run `yarn dev` to start the bot locally.
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import dotenv = require('dotenv')
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dotenv.config()
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import Discord = require('discord.js')
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import _ = require('lodash')
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const NOTIF_CHANNEL_ID: string = process.env.NOTIF_CHANNEL_ID
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const BOT_TOKEN: string = process.env.BOT_TOKEN
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const BOT_PREFIX = "."
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const client = new Discord.Client()
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const parseCommand = message => {
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// extract arguments by splitting by spaces and grouping strings in quotes
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// e.g. .ping 1 "2 3" => ['ping', '1', '2 3']
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let args = message.content.slice(BOT_PREFIX.length).match(/[^\s"']+|"([^"]*)"|'([^']*)'/g)
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args = _.map(args, arg => {
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if (arg[0].match(/'|"/g) && arg[arg.length-1].match(/'|"/g)) {
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return arg.slice(1,arg.length-1)
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}
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return arg
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})
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const firstArg = args.shift()
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if (!firstArg) return
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const command = firstArg.toLowerCase()
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return { command, args }
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}
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const handleCommand = async (message, command, args) => {
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switch(command) {
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case 'ping':
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await message.channel.send('pong')
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}
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}
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const handleMessage = async message => {
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// ignore messages without bot prefix and messages from other bots
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if (!message.content.startsWith(BOT_PREFIX) || message.author.bot) return
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// obtain command and args from the command message
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const { command, args } = parseCommand(message)
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// TODO: log commands
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try {
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await handleCommand(message, command, args)
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} catch(e) {
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// TODO: handle error
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}
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}
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const startBot = async () => {
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client.once('ready', async () => {
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const notif = await client.channels.fetch(NOTIF_CHANNEL_ID) as Discord.TextChannel
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notif.send('Codey is up!')
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})
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client.on('message', handleMessage)
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client.login(BOT_TOKEN)
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}
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startBot()
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{
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"name": "csc-discord-bot",
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"version": "0.1.0",
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"description": "",
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"main": "index.js",
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"scripts": {
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"dev": "nodemon index.ts",
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"author": "",
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"license": "ISC",
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"dependencies": {
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"discord.js": "^12.5.3",
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"dotenv": "^8.2.0",
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"lodash": "^4.17.21",
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"typescript": "^4.2.4"
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},
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"devDependencies": {
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"@types/lodash": "^4.14.168",
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"@types/node": "^15.0.1",
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"@typescript-eslint/eslint-plugin": "^4.22.0",
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"@typescript-eslint/parser": "^4.22.0",
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"eslint": "^7.25.0",
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"eslint-config-prettier": "^8.3.0",
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"eslint-plugin-prettier": "^3.4.0",
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"nodemon": "^2.0.7",
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"prettier": "^2.2.1",
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"ts-node": "^9.1.1"
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}
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}
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