import { getBaseURL } from "../../../helpers/url"
import { auth } from "../../../lib/auth"
import type { NextApiRequest, NextApiResponse } from "next"

export const config = {
  api: {
    bodyParser: false,
  },
}

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
  const baseUrl = getBaseURL()
  const url = new URL(req.url!, baseUrl)

  let body: Buffer | undefined
  if (req.method !== "GET" && req.method !== "HEAD") {
    body = await new Promise<Buffer>((resolve, reject) => {
      const chunks: Buffer[] = []
      req.on("data", (chunk: Buffer) => chunks.push(chunk))
      req.on("end", () => resolve(Buffer.concat(chunks)))
      req.on("error", reject)
    })
  }

  const webRequest = new Request(url.toString(), {
    method: req.method,
    headers: req.headers as HeadersInit,
    body: body,
  })

  const response = await auth.handler(webRequest)

  res.status(response.status)
  response.headers.forEach((value, key) => {
    res.setHeader(key, value)
  })
  res.end(await response.text())
}