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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
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