[Events] Restrict bot to configured guild. (#26)

src/events/guild/guildCreate.ts

@@ -1,4 +1,5 @@
 import { Client, Guild } from 'discord.js';
+import { config } from '../../config';
 import { Database } from '../../shared/Database';
 import { Event } from '../../types';
 
@@ -6,6 +7,11 @@ class GuildCreateEvent implements Event<Client, 'guildCreate'> {
   event = 'guildCreate' as const;
 
   async execute(context: Client<boolean>, guild: Guild): Promise<void> {
+    if (guild.id != config.DISCORD_GUILD_ID) {
+      await guild.leave();
+      return;
+    }
+
     await Database.getOrCreateSettings(guild.id);
   }
 }

src/index.ts

@@ -126,6 +126,10 @@ client.on('interactionCreate', async (interaction) => {
 client.on('clientReady', async () => {
   console.log(`Logged in as ${client.user!.tag}!`);
 
+  for (const guild of client.guilds.cache.values()) {
+    if (guild.id != config.DISCORD_GUILD_ID) await guild.leave();
+  }
+
   await loadHandlersFrom('commands', commands);
   await loadHandlersFrom('context-menus', contextMenus);
   await loadHandlersFrom('menus', menus);