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

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/guilds/edit_guild.ts

@@ -0,0 +1,29 @@
+import { RequestManager } from "../../rest/request_manager.ts";
+import { GuildEditOptions } from "../../types/mod.ts";
+import { endpoints } from "../../util/constants.ts";
+import { requireBotGuildPermissions } from "../../util/permissions.ts";
+import { urlToBase64 } from "../../util/utils.ts";
+
+/** Modify a guilds settings. Requires the MANAGE_GUILD permission. */
+export async function editGuild(guildID: string, options: GuildEditOptions) {
+  await requireBotGuildPermissions(guildID, ["MANAGE_GUILD"]);
+
+  if (options.icon && !options.icon.startsWith("data:image/")) {
+    options.icon = await urlToBase64(options.icon);
+  }
+
+  if (options.banner && !options.banner.startsWith("data:image/")) {
+    options.banner = await urlToBase64(options.banner);
+  }
+
+  if (options.splash && !options.splash.startsWith("data:image/")) {
+    options.splash = await urlToBase64(options.splash);
+  }
+
+  const result = await RequestManager.patch(
+    endpoints.GUILDS_BASE(guildID),
+    options,
+  );
+
+  return result;
+}