import {Client, Message, Snowflake, TextChannel} from 'discord.js' import emojiStrip from 'emoji-strip' import axios from 'axios' import { Config } from './Config' import Rcon from './Rcon' class Discord { config: Config client: Client channel: Snowflake constructor (config: Config, onReady?: () => void) { this.config = config this.client = new Client() if (onReady) this.client.once('ready', () => onReady()) this.client.on('message', (message: Message) => this.onMessage(message)) this.channel = config.DISCORD_CHANNEL_ID || '' } public async init () { try { await this.client.login(this.config.DISCORD_TOKEN) if (this.config.DISCORD_CHANNEL_NAME && !this.config.DISCORD_CHANNEL_ID) this.getChannelIdFromName(this.config.DISCORD_CHANNEL_NAME) } catch (e) { console.log('[ERROR] Could not authenticate with Discord: ' + e) if (this.config.DEBUG) console.error(e) } } private getChannelIdFromName (name: string) { // remove the # if there is one if (name.startsWith('#')) name = name.substring(1, name.length) // @ts-ignore const channel: TextChannel = this.client.channels.find((c: TextChannel) => c.type === 'text' && c.name === name && !c.deleted) if (channel) { this.channel = channel.id console.log(`[INFO] Found channel #${channel.name} (id: ${channel.id}) in the server "${channel.guild.name}"`) } else { console.log(`[INFO] Could not find channel ${name}! Check that the name is correct or use the ID of the channel instead (DISCORD_CHANNEL_ID)!`) process.exit(1) } } private parseDiscordWebhook (url: string) { const re = /discordapp.com\/api\/webhooks\/([^\/]+)\/([^\/]+)/ // the is of the webhook let id = null let token = null if (!re.test(url)) { // In case the url changes at some point, I will warn if it still works console.log('[WARN] The Webhook URL may not be valid!') } else { const match = url.match(re) if (match) { id = match[1] token = match[2] } } return { id, token } } private async onMessage (message: Message) { // no channel, done if (!this.channel) return // don't want to check other channels if (message.channel.id !== this.channel || message.channel.type !== 'text') return // if using webhooks, ignore this! if (message.webhookID) { // backwards compatability with older config if (this.config.USE_WEBHOOKS && this.config.IGNORE_WEBHOOKS === undefined) return // if ignoring all webhooks, ignore if (this.config.IGNORE_WEBHOOKS) { return } else if (this.config.USE_WEBHOOKS) { // otherwise, ignore all webhooks that are not the same as this one const { id } = this.parseDiscordWebhook(this.config.WEBHOOK_URL) if (id === message.webhookID) { if (this.config.DEBUG) console.log('[INFO] Ignoring webhook from self') return } } } // if the same user as the bot, ignore if (message.author.id === this.client.user.id) return // ignore any attachments if (message.attachments.array().length) return const rcon = new Rcon(this.config.MINECRAFT_SERVER_RCON_IP, this.config.MINECRAFT_SERVER_RCON_PORT, this.config.DEBUG) try { await rcon.auth(this.config.MINECRAFT_SERVER_RCON_PASSWORD) } catch (e) { console.log('[ERROR] Could not auth with the server!') if (this.config.DEBUG) console.error(e) } let command = '' if (this.config.ALLOW_SLASH_COMMANDS && this.config.SLASH_COMMAND_ROLES && message.cleanContent.startsWith('/')) { const author = message.member if (author.roles.find(r => this.config.SLASH_COMMAND_ROLES.includes(r.name))) { // send the raw command, can be dangerous... command = message.cleanContent } else { console.log('[INFO] User attempted a slash command without a role') } } else { command = `/tellraw @a ${this.makeMinecraftTellraw(message)}` } if (this.config.DEBUG) console.log(`[DEBUG] Sending command "${command}" to the server`) if (command) { await rcon.command(command).catch((e) => { console.log('[ERROR] Could not send command!') if (this.config.DEBUG) console.error(e) }) } rcon.close() } private makeMinecraftTellraw(message: Message): string { const variables: {[index: string]: string} = { username: emojiStrip(message.author.username), discriminator: message.author.discriminator, text: emojiStrip(message.cleanContent) } // hastily use JSON to encode the strings for (const v of Object.keys(variables)) { variables[v] = JSON.stringify(variables[v]).slice(1,-1) } return this.config.MINECRAFT_TELLRAW_TEMPLATE .replace(/%username%/g, variables.username) .replace(/%discriminator%/g, variables.discriminator) .replace(/%message%/g, variables.text) } private replaceDiscordMentions(message: string): string { const possibleMentions = message.match(/@*.*#[0-9]{4}/gim) if (possibleMentions) { for (let mention of possibleMentions) { const mentionParts = mention.split('#') let username = mentionParts[0].replace('@', '') if (mentionParts.length > 1) { if (this.config.ALLOW_USER_MENTIONS) { const user = this.client.users.find(user => user.username === username && user.discriminator === mentionParts[1]) if (user) { message = message.replace(mention, '<@' + user.id + '>') } } } if (['here', 'everyone'].includes(username)) { // remove these large pings if (!this.config.ALLOW_HERE_EVERYONE_MENTIONS) { message = message .replace('@everyone', '@ everyone') .replace('@here', '@ here') } } } } return message } private makeDiscordWebhook (username: string, message: string) { message = this.replaceDiscordMentions(message) let avatarURL if (username === this.config.SERVER_NAME + ' - Server') { // use avatar for the server avatarURL = this.config.SERVER_IMAGE || 'https://minotar.net/helm/Steve/256.png' } else { // use avatar for player avatarURL = `https://minotar.net/helm/${username}/256.png` } return { username: username, content: message, 'avatar_url': avatarURL, } } private makeDiscordMessage(username: string, message: string) { message = this.replaceDiscordMentions(message) return this.config.DISCORD_MESSAGE_TEMPLATE .replace('%username%', username) .replace('%message%', message) } public async sendMessage (username: string, message: string) { if (this.config.USE_WEBHOOKS) { const webhook = this.makeDiscordWebhook(username, message) try { await axios.post(this.config.WEBHOOK_URL, webhook, { headers: { 'Content-Type': 'application/json' } }) } catch (e) { console.log('[ERROR] Could not send Discord message through WebHook!') if (this.config.DEBUG) console.log(e) } } else { // find the channel const channel = this.client.channels.find((ch) => ch.id === this.config.DISCORD_CHANNEL_ID && ch.type === 'text') as TextChannel if (channel) { await channel.send(this.makeDiscordMessage(username, message)) } else { console.log(`[ERROR] Could not find channel with ID ${this.config.DISCORD_CHANNEL_ID}!`) } } } } export default Discord