pdfer/pages/api/pdf/[id].ts

import {promises} from 'fs'
import { NextApiRequest, NextApiResponse } from 'next'

import {remove as storeRemove} from '../../../lib/store'
import { getPdfPath } from '../../../lib/utils'

const handler = async (req: NextApiRequest, res: NextApiResponse) => {
    const { method } = req;

    switch (req.method) {
        case 'GET':
            try {
                const {
                    query: { id: idArg },
                } = req

                const fileContent = await promises.readFile(getPdfPath(idArg))
                res.setHeader('Content-Type', 'application/pdf')
                res.status(200).send(fileContent);
            } catch (error) {
                console.error(error)
                res.status(404).json({ statusCode: 404, message: 'Method Not Allowed' })
            }
            break;
        case 'DELETE':
            try {
                const {
                    query: { id: idArg },
                } = req

                storeRemove(idArg)

                res.status(202).end()
            } catch (error) {
                console.error(error)
                res.status(404).json({ statusCode: 404, message: 'Method Not Allowed' })
            }
            break;
        default:
            res.setHeader('Allow', ['GET', 'DELETE'])
            res.status(405).end(`Method ${method} Not Allowed`)
    }
}

export default handler;