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

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/roles/create_role.ts

@@ -0,0 +1,31 @@
+import { cacheHandlers } from "../../cache.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
+import { structures } from "../../structures/mod.ts";
+import { CreateRoleOptions, RoleData } from "../../types/mod.ts";
+import { endpoints } from "../../util/constants.ts";
+import {
+  calculateBits,
+  requireBotGuildPermissions,
+} from "../../util/permissions.ts";
+
+/** Create a new role for the guild. Requires the MANAGE_ROLES permission. */
+export async function createRole(
+  guildID: string,
+  options: CreateRoleOptions,
+  reason?: string,
+) {
+  await requireBotGuildPermissions(guildID, ["MANAGE_ROLES"]);
+
+  const result = await RequestManager.post(endpoints.GUILD_ROLES(guildID), {
+    ...options,
+    permissions: calculateBits(options?.permissions || []),
+    reason,
+  });
+
+  const roleData = result as RoleData;
+  const role = await structures.createRoleStruct(roleData);
+  const guild = await cacheHandlers.get("guilds", guildID);
+  guild?.roles.set(role.id, role);
+
+  return role;
+}