Move cookie check outside services

src/modules/auth/actions/getMyDetailAction.ts

@@ -6,6 +6,8 @@ import BaseError from "@/core/error/BaseError";
 import ServerResponseAction from "@/modules/dashboard/types/ServerResponseAction";
 import handleCatch from "@/modules/dashboard/utils/handleCatch";
 import "server-only";
+import { cookies } from "next/headers";
+import getUserFromToken from "../utils/getUserFromToken";
 
 /**
  * Asynchronously retrieves the authenticated user's details from a server-side context in a Next.js application.
@@ -17,8 +19,13 @@ import "server-only";
  */
 export default async function getMyDetailAction(): Promise<ServerResponseAction<Awaited<ReturnType<typeof getMyDetail>>>> {
 	try {
+		const token = cookies().get("token");
+
+		// Return null if token is not present
+		if (!token) throw new AuthError({errorCode: "INVALID_JWT_TOKEN"});
+
 		// Attempt to fetch and return the user's details.
-		const userDetails = await getMyDetail();
+		const userDetails = await getMyDetail(token.value);
 		return {
 			success: true,
 			data: userDetails,

src/modules/auth/actions/guestOnly.ts

@@ -2,6 +2,7 @@
 
 import { redirect } from "next/navigation";
 import getMyDetail from "../services/getMyDetail";
+import { cookies } from "next/headers";
 
 /**
  * Enforces a guest-only access policy by redirecting authenticated users to the dashboard.
@@ -11,7 +12,11 @@ import getMyDetail from "../services/getMyDetail";
  * @returns A promise that resolves when the operation completes. The function itself does not return a value.
  */
 export default async function guestOnly(): Promise<void> {
-	const user = await getMyDetail();
+	const token = cookies().get("token");
+
+	if (!token) return;
+
+	const user = await getMyDetail(token.value);
 
 	// If an authenticated user is detected, redirect them to the dashboard.
 	if (user) {

src/modules/auth/services/getMyDetail.ts

@@ -1,20 +1,22 @@
 import { cookies } from "next/headers";
 import getUserFromToken from "../utils/getUserFromToken";
+import AuthError from "../error/AuthError";
 
 /**
  * Retrieves the details of the currently authenticated user based on the JWT token.
  * If the token is not present or the user cannot be found, it returns null.
  * Otherwise, it returns the user's name, email, and photo URL.
- * 
+ *
  * @returns An object containing the user's name, email, and photo URL, or null if the user cannot be authenticated.
  */
-export default async function getMyDetail() {
+export default async function getMyDetail(token?: string) {
-	const token = cookies().get("token");
+	if (!token)
+		throw new AuthError({
+			errorCode: "INVALID_JWT_TOKEN",
+			message: "You are not authenticated",
+		});
 
-	// Return null if token is not present
+	const user = await getUserFromToken(token);
-	if (!token) return null;
-
-	const user = await getUserFromToken(token.value);
 
 	// Return null if user is not found
 	if (!user) return null;