Vercel serverless function protected by secret to be used in cron job

index.ts

import { NextApiRequest, NextApiResponse } from "next"

// ----------------------------------------------------------------------------
// To test this from the command line, run:
// curl --request POST \
// --url 'http://localhost:3000/api/<endpoint>' \
// --header 'Authorization: Bearer API_SECRET_KEY' \

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse
) {
  if (req.method === "POST") {
    try {
      const { authorization } = req.headers

      if (authorization === `Bearer ${process.env.API_SECRET_KEY}`) {
        res.status(200).json({ success: true })
      } else {
        res.status(401).json({ success: false })
      }
    } catch (err) {
      res.status(500).json({ statusCode: 500, message: err.message })
    }
  } else {
    res.setHeader("Allow", "POST")
    res.status(405).end("Method Not Allowed")
  }
}