refactor(utils): export uuid regex and isValidUuid helper

app/(app)/dm/[conversationId]/page.tsx

@@ -12,14 +12,7 @@ import { AppHeader } from "@/components/layout/AppHeader";
 import { ChatInput } from "@/components/chat/ChatInput";
 import { ChatMessages } from "@/components/chat/ChatMessages";
 import type { MessageWithMember } from "@/components/chat/ChatItem";
-
-/**
- * Regular expression to validate standard UUID v1-v5 formats.
- *
- * @type {RegExp}
- */
-const UUID_REGEX =
-  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
+import { isValidUuid } from "@/lib/utils";
 
 /**
  * Renders the direct message conversation page with header, message history, and input field.
@@ -38,7 +31,7 @@ export default async function DirectMessagePage({
   const { conversationId } = await params;
 
   // 1. Validation
-  if (!UUID_REGEX.test(conversationId)) {
+  if (!isValidUuid(conversationId)) {
     redirect("/");
   }
 

app/(app)/servers/[serverId]/channels/[channelId]/page.tsx

@@ -11,14 +11,7 @@ import { ChatMessages } from "@/components/chat/ChatMessages";
 import { getChannelById } from "@/lib/services/channel.service";
 import { getChannelMessages } from "@/lib/services/message.service";
 import { getServerById } from "@/lib/services/server.service";
-
-/**
- * Regular expression for validating UUID string formats.
- *
- * @type {RegExp}
- */
-const UUID_REGEX =
-  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
+import { isValidUuid } from "@/lib/utils";
 
 /**
  * Renders the channel chat view by validating parameters, checking user session, fetching channel data, and displaying headers, messages, and input controls.
@@ -37,7 +30,7 @@ export default async function ChannelPage({
   const { serverId, channelId } = await params;
 
   // 1. Check the UUID format for BOTH parameters
-  if (!UUID_REGEX.test(serverId) || !UUID_REGEX.test(channelId)) {
+  if (!isValidUuid(serverId) || !isValidUuid(channelId)) {
     redirect("/");
   }
 

app/api/dm/[conversationId]/route.ts

@@ -6,13 +6,10 @@
 import { auth } from "@/auth";
 import { db } from "@/db";
 import { conversations, directMessages } from "@/db/schema";
+import { isValidUuid } from "@/lib/utils";
 import { and, eq, or } from "drizzle-orm";
 import { NextResponse } from "next/server";
 
-/** Regular expression to validate UUID format for conversation IDs. */
-const UUID_REGEX =
-  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
-
 /**
  * Handles POST requests to send a new direct message in a conversation.
  *
@@ -30,7 +27,7 @@ export async function POST(
   try {
     const { conversationId } = await params;
 
-    if (!UUID_REGEX.test(conversationId)) {
+    if (!isValidUuid(conversationId)) {
       return NextResponse.json(
         { error: "Invalid Conversation ID" },
         { status: 400 },

app/api/dm/messages/[messageId]/route.ts

@@ -6,17 +6,10 @@
 import { auth } from "@/auth";
 import { db } from "@/db";
 import { directMessages } from "@/db/schema";
+import { isValidUuid } from "@/lib/utils";
 import { eq } from "drizzle-orm";
 import { NextResponse } from "next/server";
 
-/**
- * Regular expression for validating UUID version 1-5 strings.
- *
- * @constant {RegExp}
- */
-const UUID_REGEX =
-  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
-
 /**
  * Handles PATCH requests to update the content of an existing direct message.
  *
@@ -34,7 +27,7 @@ export async function PATCH(
   try {
     const { messageId } = await params;
 
-    if (!UUID_REGEX.test(messageId)) {
+    if (!isValidUuid(messageId)) {
       return NextResponse.json(
         { error: "Invalid Message ID" },
         { status: 400 },
@@ -104,7 +97,7 @@ export async function DELETE(
   try {
     const { messageId } = await params;
 
-    if (!UUID_REGEX.test(messageId)) {
+    if (!isValidUuid(messageId)) {
       return NextResponse.json(
         { error: "Invalid Message ID" },
         { status: 400 },

app/api/dm/route.ts

@@ -6,17 +6,10 @@
 import { auth } from "@/auth";
 import { db } from "@/db";
 import { conversations } from "@/db/schema";
+import { isValidUuid } from "@/lib/utils";
 import { and, eq, or } from "drizzle-orm";
 import { NextResponse } from "next/server";
 
-/**
- * Regular expression pattern for validating UUID format.
- *
- * @type {RegExp}
- */
-const UUID_REGEX =
-  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
-
 /**
  * Handles HTTP POST requests to initiate or fetch a direct message conversation with a specified recipient.
  *
@@ -36,7 +29,7 @@ export async function POST(req: Request) {
 
     if (
       !recipientId ||
-      !UUID_REGEX.test(recipientId) ||
+      !isValidUuid(recipientId) ||
       recipientId === session.user.id
     ) {
       return NextResponse.json(

lib/utils.ts

@@ -1,11 +1,27 @@
 /**
  * @file lib/utils.ts
- * @description Utility module providing helper functions for conditionally merging and combining Tailwind CSS classes.
+ * @description Utility module providing helper functions for classes and data validation.
  */
 
 import { type ClassValue, clsx } from "clsx";
 import { twMerge } from "tailwind-merge";
 
+/**
+ * Regex pattern to validate standard v1-v5 UUIDs.
+ */
+export const UUID_REGEX =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
+
+/**
+ * Checks whether a given string is a valid UUID.
+ *
+ * @param {string} id - The string to validate.
+ * @returns {boolean} True if valid UUID, false otherwise.
+ */
+export function isValidUuid(id: string): boolean {
+  return UUID_REGEX.test(id);
+}
+
 /**
  * Merges multiple class names or conditional class objects into a single string using clsx and tailwind-merge.
  * Resolves Tailwind CSS class conflicts intelligently.