# mixin to provide URL for IIIF Content Search service
module NewspaperWorks
  module IiifManifestPresenterBehavior
    extend ActiveSupport::Concern

    def search_service
      Rails.application.routes.url_helpers.solr_document_iiif_search_url(id,
                                                                         host: request.base_url)
    end

    # based on Hyrax::WorkShowPresenter#manifest_metadata
    # expects that individual presenters define #iiif_metadata_fields
    def manifest_metadata
      fields = iiif_metadata_fields || []
      metadata = []
      fields.each do |field|
        label = Hyrax::Renderers::AttributeRenderer.new(field, nil).label
        value = send(field)
        next if value.blank?
        value = Array.wrap(value) if value.is_a?(String)
        metadata << {
          'label' => label,
          'value' => Array.wrap(value.map { |f| Loofah.fragment(f.to_s).scrub!(:whitewash).to_s })
        }
      end
      metadata
    end
  end
end