Filtering data inside controller

Questions and Answers Strapi Backend
1

Inside my collection type controller I want to filter results based on business logic.

The standard way is this, which I expect:

async find(ctx) {
  const entries = await strapi.entityService.findMany('api::restaurant.restaurant', {
    filters: ...,
  });
}

Problem is, that restaurants has to be filtered by a deeper logic inside multiple relations and by userrole.

So I tried filtering after fetching.
Here an example with find:

async find(ctx) {
  const results = await super.find(ctx);
  results.data = filterPublicRestaurants(ctx, results.data);
  return results;
}

The problem is that the meta pagination no longer fits the data.

Is there a better way to filter data based on business logic?