User roles and permissions with conditions

I want to implement roles & permissions and have some sort of conditions for the permissions. What I mean by conditions is, for example:

• There are two roles: user and superuser
• There is a permission: add-post
• user can only add 5 posts
• superuser can add unlimited number of posts

I looked for some packages I could use, for example:

• https://github.com/Zizaco/entrust
• https://cartalyst.com/manual/sentry/2.1
• https://github.com/romanbican/roles

All of them have nice examples, but I couldn't find any information about the "condition" part I would like to have.

I guess the simplest solution would be to use one of the packages and just hard-code the condition:

if ( ! $user->can('add-post')) {
    // throw exception or whatever
}

if ( ! $user->hasRole('superuser') && $postCount > 5) {
    //
}

But I don'y really like that...

This kind of API would be cool to use:

if ( ! $user->can('add-post', ['count' => $postCount])) {
    //
}

Is there some package with this kind of functionality? Couldn't find any, maybe I didn't use the right keywords when searching... If not, I guess I would need to extend some existing package/create this from scratch.

Have you implemented this kind of functionality in your projects/how would you implement this?

Thanks!