Add user authentication and role management

app/api/auth/logout/route.ts

@@ -0,0 +1,17 @@
+import {
+  clearSessionCookie,
+  deleteSession,
+  sessionCookieFromHeader,
+} from "../../../../lib/user-auth";
+
+export const runtime = "edge";
+
+export async function POST(request: Request) {
+  const token = sessionCookieFromHeader(request.headers.get("cookie"));
+  await deleteSession(token);
+  const secure = new URL(request.url).protocol === "https:";
+  return Response.json(
+    { loggedOut: true },
+    { headers: { "Set-Cookie": clearSessionCookie(secure) } },
+  );
+}