add temporary ratelimit

README.md

@@ -4,6 +4,6 @@ A Minecraft chatbot for 3b3t NoHax.
 ## Future Ideas
 - Reputation system
 - Message of the day which is sent to every player upon joining
-- Respond to whispers with whispers to prevent chat clutter
+- Respond to whispers with whispers to prevent chat clutter. Be careful with discord's in-game chat's /msg command
 - Ratelimit to prevent spam
 - `Error: read ECONNRESET` crashes the bot

src/commands/commands.js

@@ -1,13 +1,21 @@
 export default class Commands {
 
+  #client
   #chat
   #prefix
   #commands
+  #ratelimit
+  #clearInterval
 
-  constructor(chat, prefix) {
+  constructor(client, chat, prefix) {
+    this.#client = client
     this.#chat = chat
     this.#prefix = prefix
     this.#commands = []
+    this.#ratelimit = new Map()
+
+    this.#clearInterval = setInterval(() => this.#ratelimit.clear(), 5 * 60 * 1_000)
+    this.#client.addListener("end", () => clearInterval(this.#clearInterval))
 
     this.#chat.addListener("chat:chat", this.#onChat.bind(this))
   }
@@ -24,12 +32,24 @@ export default class Commands {
     const args = message
       .substring(this.#prefix.length)
       .split(" ")
-    
+
     // Just to be safe
     if (args.length < 1) {
       return
     }
 
+    let ratelimit = this.#ratelimit.get(username)
+    if (ratelimit === undefined) {
+      ratelimit = 0
+    }
+
+    ratelimit++
+    this.#ratelimit.set(username, ratelimit)
+
+    if (ratelimit > 10) {
+      return
+    }
+
     for (const command of this.#commands) {
       if (command.name !== args[0]) {
         continue

src/main.js

@@ -95,7 +95,7 @@ class Bot {
     this.#client.addListener("connect", this.#onClientConnect.bind(this))
     this.#client.addListener("end", this.#onClientEnd.bind(this))
 
-    this.#commands = new Commands(this.#chat, this.#prefix)
+    this.#commands = new Commands(this.#client, this.#chat, this.#prefix)
     this.#commands.register(new BestPingCommand(this.#chat, this.#players))
     this.#commands.register(new HelpCommand(this.#chat, this.#commands))
     this.#commands.register(new InfoCommand(this.#chat))