암호 키 등록 후 Refresh Token 업그레이드 구현

src/routes/api/auth/upgradeToken/+server.ts

@@ -0,0 +1,29 @@
+import { error, text } from "@sveltejs/kit";
+import { z } from "zod";
+import { upgradeTokens } from "$lib/server/services/auth";
+import type { RequestHandler } from "./$types";
+
+export const POST: RequestHandler = async ({ request, cookies }) => {
+  const token = cookies.get("refreshToken");
+  if (!token) error(401, "Refresh token not found");
+
+  const zodRes = z
+    .object({
+      pubKey: z.string().base64().nonempty(),
+    })
+    .safeParse(await request.json());
+  if (!zodRes.success) error(400, "Invalid request body");
+
+  const { pubKey } = zodRes.data;
+  const { accessToken, refreshToken } = await upgradeTokens(token.trim(), pubKey.trim());
+
+  cookies.set("accessToken", accessToken, {
+    path: "/",
+    sameSite: "strict",
+  });
+  cookies.set("refreshToken", refreshToken, {
+    path: "/api/auth",
+    sameSite: "strict",
+  });
+  return text("Token upgraded", { headers: { "Content-Type": "text/plain" } });
+};