module Miniblog
  module User
    def self.included(base)
      base.send(:has_many, :authored_posts, inverse_of: :author,
          foreign_key: 'author_id', class_name: 'Miniblog::Post')
      base.send(:has_many, :published_posts, -> {
            where(state: 'published').
            order('published_at DESC')
          },
          inverse_of: :author,
          foreign_key: 'author_id', class_name: 'Miniblog::Post')
      base.send(:has_one, :last_post, -> {
            where(state: 'published').
            order('published_at DESC, created_at DESC, id DESC')
          },
          class_name: 'Miniblog::Post',
          foreign_key: :author_id)
    end

    def is_publisher?
      true
    end

    def last_post_at
      last_post.try(:published_at)
    end

    def last_published_at
      published_posts.first ? published_posts.first.published_at : nil
    end
  end
end