🌟 feat: Add fetchAndCachePublicChannelsMessages function to cache messages from public channels

Author: hmd-ali

src/util/cache.ts

@@ -0,0 +1,24 @@
+import type { Guild } from 'discord.js';
+import { getPublicChannels } from './channel.js';
+
+const PER_CHANNEL_CACHE_LIMIT = 100;
+export const cachedChannelsMap = new Set<string>();
+
+export const fetchAndCachePublicChannelsMessages = async (guild: Guild, force = false) => {
+  let cachedChannels = 0;
+  const channels = getPublicChannels(guild);
+
+  await Promise.all(
+    channels.map(async (channel) => {
+      if (force || !cachedChannelsMap.has(channel.id)) {
+        const messages = await channel.messages.fetch({ limit: PER_CHANNEL_CACHE_LIMIT });
+        console.log(
+          `Fetched and cached ${messages.size} messages from channel ${channel.name} (${channel.id})`
+        );
+        cachedChannelsMap.add(channel.id);
+        cachedChannels++;
+      }
+    })
+  );
+  return { cachedChannels, totalChannels: channels.size };
+};