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

* refactor(helpers): separate functions into files

* idk

* idk

src/helpers/members/edit_member.ts

@@ -0,0 +1,80 @@
+import { cacheHandlers } from "../../cache.ts";
+import { RequestManager } from "../../rest/request_manager.ts";
+import { structures } from "../../structures/mod.ts";
+import {
+  EditMemberOptions,
+  Errors,
+  MemberCreatePayload,
+  Permission,
+} from "../../types/mod.ts";
+import { endpoints } from "../../util/constants.ts";
+import {
+  requireBotChannelPermissions,
+  requireBotGuildPermissions,
+} from "../../util/permissions.ts";
+
+/** Edit the member */
+export async function editMember(
+  guildID: string,
+  memberID: string,
+  options: EditMemberOptions,
+) {
+  const requiredPerms: Set<Permission> = new Set();
+
+  if (options.nick) {
+    if (options.nick.length > 32) {
+      throw new Error(Errors.NICKNAMES_MAX_LENGTH);
+    }
+    requiredPerms.add("MANAGE_NICKNAMES");
+  }
+
+  if (options.roles) requiredPerms.add("MANAGE_ROLES");
+
+  if (
+    typeof options.mute !== "undefined" ||
+    typeof options.deaf !== "undefined" ||
+    (typeof options.channel_id !== "undefined" || "null")
+  ) {
+    const memberVoiceState = (await cacheHandlers.get("guilds", guildID))
+      ?.voiceStates.get(memberID);
+
+    if (!memberVoiceState?.channelID) {
+      throw new Error(Errors.MEMBER_NOT_IN_VOICE_CHANNEL);
+    }
+
+    if (typeof options.mute !== "undefined") {
+      requiredPerms.add("MUTE_MEMBERS");
+    }
+
+    if (typeof options.deaf !== "undefined") {
+      requiredPerms.add("DEAFEN_MEMBERS");
+    }
+
+    if (options.channel_id) {
+      const requiredVoicePerms: Set<Permission> = new Set([
+        "CONNECT",
+        "MOVE_MEMBERS",
+      ]);
+      if (memberVoiceState) {
+        await requireBotChannelPermissions(
+          memberVoiceState?.channelID,
+          [...requiredVoicePerms],
+        );
+      }
+      await requireBotChannelPermissions(
+        options.channel_id,
+        [...requiredVoicePerms],
+      );
+    }
+  }
+
+  await requireBotGuildPermissions(guildID, [...requiredPerms]);
+
+  const result = await RequestManager.patch(
+    endpoints.GUILD_MEMBER(guildID, memberID),
+    options,
+  ) as MemberCreatePayload;
+  const member = await structures.createMemberStruct(result, guildID);
+
+  return member;
+}