RenacerApi/pages/api/getTopic.ts

// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import type { NextApiRequest, NextApiResponse } from "next";
import NextCors from "nextjs-cors";
import { getDatabaseId, notion, renderClient } from "../../lib/notion";
import { DatabaseType, Error, Topic } from "../../types";

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse<any>
) {
  await NextCors(req, res, {
    methods: ["GET", "HEAD", "PUT", "PATCH", "POST", "DELETE"],
    origin: "*",
    optionsSuccessStatus: 200,
  });

  const {
    query: { id },
  } = req;
  if (!id) {
    res.status(404).json({ status: "ID not supplied." });
  } else {
    const recordMap = await renderClient.getPage(id as string);
    res.status(200).json(recordMap);
  }
}