How do I route users depending on an access type?

[greghesp]

I've got a Nextjs project, however it is OSS that will be used locally on machine so I have opted to use lowdb as a database since it's easy to use and perfect for my requirements

On one of my pages, I use getStaticProps to read in data, and pass it to the props of the component. Works perfectly

export async function getStaticProps(context) {
  const FileSync = require('lowdb/adapters/FileSync');
  const dbAdapter = new FileSync(path.resolve(process.cwd(), 'server/bin', 'db.json'));
  const db = await low(dbAdapter);
  const responses = await db.get('responses').orderBy('timestamp', 'desc').value();

  return {
    props: {
      responses,
    },
  };
}

What I need to do though is have a component that runs on every route and performs a similar query on the database to get the number of users.
If the user array in the database is empty, I want to make sure the users can only access /pages/setup/*. If there are users, then I want to make sure they can only access /pages/* and not /pages/setup/*.

How can I achieve this? I can't use the above function since it only runs on pages.
Any suggestions?