Implemented the Writing exercise's solution display

src/pages/api/exam/[module]/evaluate.ts

@@ -0,0 +1,36 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+import type {NextApiRequest, NextApiResponse} from "next";
+import {getFirestore, doc, getDoc} from "firebase/firestore";
+import {withIronSessionApiRoute} from "iron-session/next";
+import {sessionOptions} from "@/lib/session";
+import axios from "axios";
+
+interface Body {
+	question: string;
+	answer: string;
+}
+
+export default withIronSessionApiRoute(handler, sessionOptions);
+
+async function handler(req: NextApiRequest, res: NextApiResponse) {
+	if (!req.session.user) {
+		res.status(401).json({ok: false});
+		return;
+	}
+
+	const {module} = req.query as {module: string};
+
+	if (module === "writing") {
+		const backendRequest = await axios.post(`${process.env.BACKEND_URL}/writing_task2`, req.body as Body, {
+			headers: {
+				Authorization: `Bearer ${process.env.BACKEND_JWT}`,
+			},
+		});
+
+		res.status(backendRequest.status).json(backendRequest.data);
+		return;
+	}
+
+	res.status(404).json({ok: false});
+	return;
+}