How can I access query params inside any of the NextAuth callbacks?

[sundaray]

I have a Next.js app (version 14), where I have implemented user authentication and authorization using NextAuth v4 (Google OAuth). In my app, I have a protected page at /credits.

When I try to visit the Credits page (without being logged in), I get redirected to the Login page at /login. On the Login page, the URL is: http:localhost:3000/login?from=%2Fcredits.

Here is what the signIn function looks like:

    await signIn("email", {
      email: data.email.toLowerCase(),
      redirect: false,
      callbackUrl: searchParams?.get("from") || "/",
    })

I want to save the value of the from query param in my database after successful log in. My question is: how do I make this value available inside any of the callbacks (signIn, jwt or session)? Important point: The callback function where the from query param value is made available should also have access to the user email address.

If this is not the right approach, then what other way would you suggest?