diff --git a/package-lock.json b/package-lock.json
index 26fd812b..0975f032 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,8 +1,473 @@
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+		},
+		"node_modules/regexp-clone": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/regexp-clone/-/regexp-clone-1.0.0.tgz",
+			"integrity": "sha512-TuAasHQNamyyJ2hb97IuBEif4qBHGjPHBS64sZwytpLEqtBQ1gPJTnOaQ6qmpET16cK14kkjbazl6+p0RRv0yw=="
+		},
+		"node_modules/require_optional": {
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/require_optional/-/require_optional-1.0.1.tgz",
+			"integrity": "sha512-qhM/y57enGWHAe3v/NcwML6a3/vfESLe/sGM2dII+gEO0BpKRUkWZow/tyloNqJyN6kXSl3RyyM8Ll5D/sJP8g==",
+			"dependencies": {
+				"resolve-from": "^2.0.0",
+				"semver": "^5.1.0"
+			}
+		},
+		"node_modules/resolve-from": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-2.0.0.tgz",
+			"integrity": "sha1-lICrIOlP+h2egKgEx+oUdhGWa1c=",
+			"engines": {
+				"node": ">=0.10.0"
+			}
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+		"node_modules/safe-buffer": {
+			"version": "5.2.1",
+			"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+			"integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
+		},
+		"node_modules/saslprep": {
+			"version": "1.0.3",
+			"resolved": "https://registry.npmjs.org/saslprep/-/saslprep-1.0.3.tgz",
+			"integrity": "sha512-/MY/PEMbk2SuY5sScONwhUDsV2p77Znkb/q3nSVstq/yQzYJOH/Azh29p9oJLsl3LnQwSvZDKagDGBsBwSooag==",
+			"optional": true,
+			"dependencies": {
+				"sparse-bitfield": "^3.0.3"
+			},
+			"engines": {
+				"node": ">=6"
+			}
+		},
+		"node_modules/semver": {
+			"version": "5.7.1",
+			"resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+			"integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+			"bin": {
+				"semver": "bin/semver"
+			}
+		},
+		"node_modules/sift": {
+			"version": "7.0.1",
+			"resolved": "https://registry.npmjs.org/sift/-/sift-7.0.1.tgz",
+			"integrity": "sha512-oqD7PMJ+uO6jV9EQCl0LrRw1OwsiPsiFQR5AR30heR+4Dl7jBBbDLnNvWiak20tzZlSE1H7RB30SX/1j/YYT7g=="
+		},
+		"node_modules/sliced": {
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/sliced/-/sliced-1.0.1.tgz",
+			"integrity": "sha1-CzpmK10Ewxd7GSa+qCsD+Dei70E="
+		},
+		"node_modules/sparse-bitfield": {
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
+			"integrity": "sha1-/0rm5oZWBWuks+eSqzM004JzyhE=",
+			"optional": true,
+			"dependencies": {
+				"memory-pager": "^1.0.2"
+			}
+		},
+		"node_modules/string_decoder": {
+			"version": "1.1.1",
+			"resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+			"integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+			"dependencies": {
+				"safe-buffer": "~5.1.0"
+			}
+		},
+		"node_modules/string_decoder/node_modules/safe-buffer": {
+			"version": "5.1.2",
+			"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+			"integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+		},
+		"node_modules/typescript": {
+			"version": "4.1.3",
+			"resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.3.tgz",
+			"integrity": "sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==",
+			"bin": {
+				"tsc": "bin/tsc",
+				"tsserver": "bin/tsserver"
+			},
+			"engines": {
+				"node": ">=4.2.0"
+			}
+		},
+		"node_modules/util-deprecate": {
+			"version": "1.0.2",
+			"resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+			"integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+		}
+	},
 	"dependencies": {
 		"@types/bson": {
 			"version": "4.0.3",
diff --git a/src/util/Constants.ts b/src/util/Constants.ts
index 808d234b..bda53174 100644
--- a/src/util/Constants.ts
+++ b/src/util/Constants.ts
@@ -1,3 +1,28 @@
 import { VerifyOptions } from "jsonwebtoken";
 
 export const JWTOptions: VerifyOptions = { algorithms: ["HS256"] };
+
+export enum MessageType {
+	DEFAULT,
+	RECIPIENT_ADD,
+	RECIPIENT_REMOVE,
+	CALL,
+	CHANNEL_NAME_CHANGE,
+	CHANNEL_ICON_CHANGE,
+	CHANNEL_PINNED_MESSAGE,
+	GUILD_MEMBER_JOIN,
+	USER_PREMIUM_GUILD_SUBSCRIPTION,
+	USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_1,
+	USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_2,
+	USER_PREMIUM_GUILD_SUBSCRIPTION_TIER_3,
+	CHANNEL_FOLLOW_ADD,
+	GUILD_DISCOVERY_DISQUALIFIED,
+	GUILD_DISCOVERY_REQUALIFIED,
+	GUILD_DISCOVERY_GRACE_PERIOD_INITIAL_WARNING,
+	GUILD_DISCOVERY_GRACE_PERIOD_FINAL_WARNING,
+	THREAD_CREATED,
+	REPLY,
+	APPLICATION_COMMAND,
+	THREAD_STARTER_MESSAGE,
+	GUILD_INVITE_REMINDER,
+}
diff --git a/src/util/Permissions.ts b/src/util/Permissions.ts
index 8debfa08..fb8ed2b0 100644
--- a/src/util/Permissions.ts
+++ b/src/util/Permissions.ts
@@ -6,6 +6,7 @@ import { ChannelPermissionOverwrite } from "../models/Channel";
 import { Role, RoleModel } from "../models/Role";
 import { BitField } from "./BitField";
 import { GuildDocument, GuildModel } from "../models/Guild";
+// TODO: check role hierarchy permission
 
 var HTTPError: any;
 
@@ -186,7 +187,7 @@ export class Permissions extends BitField {
 }
 
 export async function getPermission(
-	user_id: string,
+	user_id?: string,
 	guild_id?: string,
 	channel_id?: string,
 	cache?: { channel?: ChannelDocument | null; member?: MemberDocument | null; guild?: GuildDocument | null }
@@ -194,6 +195,8 @@ export async function getPermission(
 	var { channel, member, guild } = cache || {};
 	var roles;
 
+	if (!user_id) throw new HTTPError("User not found");
+
 	if (channel_id && !channel) {
 		channel = await ChannelModel.findOne(
 			{ id: channel_id },
@@ -205,11 +208,11 @@ export async function getPermission(
 
 	if (guild_id) {
 		if (!guild) guild = await GuildModel.findOne({ id: guild_id }, { owner_id: true }).exec();
-		if (!guild) throw new Error("Guild not found");
+		if (!guild) throw new HTTPError("Guild not found");
 		if (guild.owner_id === user_id) return new Permissions(Permissions.FLAGS.ADMINISTRATOR);
 
 		if (!member) member = await MemberModel.findOne({ guild_id, id: user_id }, "roles").exec();
-		if (!member) throw new Error("Member not found");
+		if (!member) throw new HTTPError("Member not found");
 
 		roles = await RoleModel.find({ guild_id, id: { $in: member.roles } })
 			.lean()
diff --git a/src/util/String.ts b/src/util/String.ts
index bac7905f..55f11e8d 100644
--- a/src/util/String.ts
+++ b/src/util/String.ts
@@ -1,7 +1,7 @@
-import { DOUBLE_WHITE_SPACE, SPECIAL_CHAR } from "./Regex";
+import { SPECIAL_CHAR } from "./Regex";
 
 export function trimSpecial(str?: string): string {
 	// @ts-ignore
 	if (!str) return;
-	return str.replace(SPECIAL_CHAR, "").replace(DOUBLE_WHITE_SPACE, " ").trim();
+	return str.replace(SPECIAL_CHAR, "").trim();
 }