Add channel permission getter

src/tools/discord.ts

@@ -1,4 +1,4 @@
-import { GuildBasedChannel } from "discord.js";
+import { GuildBasedChannel, GuildTextBasedChannel, PermissionsBitField } from "discord.js";
 import client from "../client";
 
 export async function getGuildChannel(guildID: string, channelID: string): Promise<GuildBasedChannel | null> {
@@ -7,4 +7,15 @@ export async function getGuildChannel(guildID: string, channelID: string): Promi
 
     const channel = await guild.channels.fetch(channelID);
     return channel;
+}
+
+export async function getChannelPermission(channel: GuildTextBasedChannel): Promise<Readonly<PermissionsBitField> | null> {
+    try {
+        const guildMember = await channel.guild.members.fetch(client.user!.id);
+        if (!guildMember) return null;
+
+        return channel.permissionsFor(guildMember);
+    } catch (error) {
+        return null;
+    }
 }