refactor(helpers): separate functions into files (#667)

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/channels/get_channels.ts

@@ -0,0 +1,24 @@
+import { cacheHandlers } from "../../cache.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
+import { structures } from "../../structures/mod.ts";
+import { ChannelCreatePayload } from "../../types/mod.ts";
+import { endpoints } from "../../util/constants.ts";
+
+/** Returns a list of guild channel objects.
+ *
+ * ⚠️ **If you need this, you are probably doing something wrong. This is not intended for use. Your channels will be cached in your guild.**
+ */
+export async function getChannels(guildID: string, addToCache = true) {
+  const result = (await RequestManager.get(
+    endpoints.GUILD_CHANNELS(guildID),
+  ) as ChannelCreatePayload[]);
+
+  return Promise.all(result.map(async (res) => {
+    const channelStruct = await structures.createChannelStruct(res, guildID);
+    if (addToCache) {
+      await cacheHandlers.set("channels", channelStruct.id, channelStruct);
+    }
+
+    return channelStruct;
+  }));
+}