B2D-Ventures/src/app/auth/callback/route.ts

import { createSupabaseClient } from "@/lib/supabase/serverComponentClient";
import { NextResponse } from "next/server";

export async function GET(request: Request) {
  const { searchParams, origin } = new URL(request.url);

  const code = searchParams.get("code");

  // if "next" is in param, use it in the redirect URL
  const next = searchParams.get("next") ?? "/";

  if (code) {
    const supabase = createSupabaseClient();

    const { error } = await supabase.auth.exchangeCodeForSession(code);

    if (!error) {
      return NextResponse.redirect(`${origin}${next}`);
    }
  }

  // return the user to an error page with instructions
  return NextResponse.redirect(`${origin}/auth/error`);
}