wip: more redirect troubleshooting

not sure if this will work properly on vercel actually...

ref: https://assaydepot.slack.com/archives/C0313NK4SMS/p1707258081079489?thread_ts=1707153816.402189&cid=C0313NK4SMS

pages/api/auth/[...nextauth].js

@@ -47,12 +47,13 @@ const authOptions = {
  * and what it expected.
  * ref: https://github.com/nextauthjs/next-auth/discussions/7491#discussioncomment-6166539
  */
+ const clientUrl = process.env.NEXT_PUBLIC_CLIENT_BASE_URL
+ const urlPathname = new URL(url).pathname
  console.log({
- url, baseUrl, clientUrl: process.env.NEXT_PUBLIC_CLIENT_BASE_URL,
- urlPathname: new URL(url).pathname, baseUrlPathname: new URL(baseUrl).pathname,
+ url, baseUrl, clientUrl, urlPathname,
  })
 
- // if (new URL(url).origin === process.env.NEXT_PUBLIC_CLIENT_BASE_URL) return url
+ if (new URL(url).origin === process.env.NEXT_PUBLIC_CLIENT_BASE_URL) return `${clientUrl}${urlPathname}`
  // return baseUrl
  return url