Revert "remove: error exceptions in Ky (#155)" (#157)

This reverts commit ad0af06.

Author: prgmr99

src/lib/serverKy.ts

@@ -1,6 +1,7 @@
 import ky from "ky";
 
 import { cookies } from "next/headers";
+import { NextResponse } from "next/server";
 
 const REFRESH_ENDPOINT = "/v1/auth/token/refresh";
 const UNAUTHORIZED_CODE = 401;
@@ -34,40 +35,59 @@ export const serverApi = ky.create({
 				const refreshToken = cookieStore.get("refreshToken")?.value;
 
 				if (response.status === UNAUTHORIZED_CODE || !currentAccessToken) {
-					const refreshResponse = await fetch(
-						`${process.env.NEXT_PUBLIC_API_URL}${REFRESH_ENDPOINT}`,
-						{
-							method: "POST",
-							headers: { "Content-Type": "application/json" },
-							body: JSON.stringify({
-								refreshToken: refreshToken,
-							}),
-						},
-					);
+					try {
+						const refreshResponse = await fetch(
+							`${process.env.NEXT_PUBLIC_API_URL}${REFRESH_ENDPOINT}`,
+							{
+								method: "POST",
+								headers: { "Content-Type": "application/json" },
+								body: JSON.stringify({
+									refreshToken: refreshToken,
+								}),
+							},
+						);
 
-					const { accessToken: newAccessToken, refreshToken: newRefreshToken } =
-						(await refreshResponse.json()) as {
+						if (!refreshResponse.ok) {
+							const errText = await refreshResponse.text();
+
+							console.error("Refresh API 실패:", errText);
+
+							cookieStore.delete("accessToken");
+							cookieStore.delete("refreshToken");
+
+							return NextResponse.redirect(new URL("/login", request.url));
+						}
+
+						const {
+							accessToken: newAccessToken,
+							refreshToken: newRefreshToken,
+						} = (await refreshResponse.json()) as {
 							accessToken: string;
 							refreshToken: string;
 						};
 
-					cookieStore.set("accessToken", newAccessToken, {
-						httpOnly: true,
-						secure: true,
-						sameSite: "none",
-						path: "/",
-						maxAge: 60 * 60,
-					});
+						cookieStore.set("accessToken", newAccessToken, {
+							httpOnly: true,
+							secure: true,
+							sameSite: "none",
+							path: "/",
+							maxAge: 60 * 60,
+						});
+
+						cookieStore.set("refreshToken", newRefreshToken, {
+							httpOnly: true,
+							secure: true,
+							sameSite: "none",
+							path: "/",
+							maxAge: 60 * 60 * 24 * 7,
+						});
 
-					cookieStore.set("refreshToken", newRefreshToken, {
-						httpOnly: true,
-						secure: true,
-						sameSite: "none",
-						path: "/",
-						maxAge: 60 * 60 * 24 * 7,
-					});
+						return serverApi(request, options);
+					} catch (error) {
+						console.error("refresh 요청 중 에러 발생:", error);
 
-					return serverApi(request, options);
+						return NextResponse.redirect(new URL("/login", request.url));
+					}
 				}
 
 				return response;