patron.rb

class Patron
  def initialize(data:)
    @data = data
  end

  def self.for(uniqname, options = {})
    client = options[:alma_client] || AlmaRestClient.client

    alma_response = client.get("/users/#{uniqname}")
    if alma_response.status == 200
      Patron.new(data: alma_response.body)
    else
      NotInAlma.new
    end
  end

  def user_group
    @data.dig("user_group", "value")
  end

  def statistic_categories
    @data.dig("user_statistic")&.map do |stat|
      stat.dig("statistic_category", "value")
    end
  end

  def can_book?
    faculty? || staff? || temporary_staff? # || faculty_proxy?
  end

  class NotInAlma < self
    def user_group
      ""
    end

    def statistic_categories
      []
    end
  end

  private

  def has_category(category)
    statistic_categories&.any? { |stat| stat == category }
  end

  def staff?
    user_group == "02"
  end

  def faculty?
    user_group == "01"
  end

  def temporary_staff?
    user_group == "14"
  end
  # def faculty_proxy?
  # has_category('PR')
  # end
end