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flatrender/src/app/api/auth/refresh/route.ts
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import { cookies } from "next/headers";
import { NextResponse } from "next/server";
import { gatewayFetch } from "@/lib/api/gateway";
import { REFRESH_TOKEN_COOKIE } from "@/lib/auth/constants";
import { clearAuthCookies, setAuthCookies } from "@/lib/auth/cookies";
export const dynamic = "force-dynamic";
export async function POST() {
const refreshToken = (await cookies()).get(REFRESH_TOKEN_COOKIE)?.value;
if (!refreshToken) {
return NextResponse.json({ error: "Not authenticated." }, { status: 401 });
}
const res = await gatewayFetch("/v1/auth/refresh", {
method: "POST",
body: JSON.stringify({ refresh_token: refreshToken }),
});
const data = await res.json().catch(() => null);
if (!res.ok || !data?.access_token) {
// Refresh token invalid/expired/rotated — force re-login.
return clearAuthCookies(
NextResponse.json({ error: "Session expired." }, { status: 401 })
);
}
const out = NextResponse.json({ ok: true, user: data.user });
return setAuthCookies(
out,
data.access_token,
data.refresh_token,
data.expires_in ?? 900
);
}