module Hyrax
  class FileSetPresenter
    include ModelProxy
    include PresentsAttributes
    include CharacterizationBehavior
    include WithEvents

    attr_accessor :solr_document, :current_ability, :request

    # @param [SolrDocument] solr_document
    # @param [Ability] current_ability
    # @param [ActionDispatch::Request] request the http request context
    def initialize(solr_document, current_ability, request = nil)
      @solr_document = solr_document
      @current_ability = current_ability
      @request = request
    end

    # CurationConcern methods
    delegate :stringify_keys, :human_readable_type, :collection?, :image?, :video?,
             :audio?, :pdf?, :office_document?, :representative_id, :to_s, to: :solr_document

    # Methods used by blacklight helpers
    delegate :has?, :first, :fetch, to: :solr_document

    # Metadata Methods
    delegate :title, :label, :description, :creator, :contributor, :subject,
             :publisher, :language, :date_uploaded,
             :embargo_release_date, :lease_expiration_date,
             :depositor, :keyword, :title_or_label, :keyword,
             :date_created, :date_modified, :itemtype,
             to: :solr_document

    def single_use_links
      @single_use_links ||= SingleUseLink.where(itemId: id).map { |link| link_presenter_class.new(link) }
    end

    # The title of the webpage that shows this FileSet.
    def page_title
      first_title
    end

    # The first title assertion
    def first_title
      title.first
    end

    # The link text when linking to the show page of this FileSet
    def link_name
      current_ability.can?(:read, id) ? first_title : 'File'
    end

    def editor?
      current_ability.can?(:edit, solr_document)
    end

    def tweeter
      TwitterPresenter.twitter_handle_for(user_key: depositor)
    end

    def license
      return if solr_document.license.nil?
      solr_document.license.first
    end

    def stats_path
      Hyrax::Engine.routes.url_helpers.stats_file_path(self)
    end

    def events(size = 100)
      super(size)
    end

    # This overrides the method in WithEvents
    def event_class
      solr_document.to_model.model_name.name
    end

    def fixity_check_status
      Hyrax::FixityStatusPresenter.new(id).render_file_set_status
    end

    def parent
      ids = ActiveFedora::SolrService.query("{!field f=member_ids_ssim}#{id}",
                                            fl: ActiveFedora.id_field)
                                     .map { |x| x.fetch(ActiveFedora.id_field) }
      @parent_presenter ||= Hyrax::PresenterFactory.build_for(ids: ids,
                                                              presenter_class: WorkShowPresenter,
                                                              presenter_args: current_ability).first
    end

    def fixity_check_service
      @fixity_check_service ||= Hyrax::FileSetFixityCheckService.new(id)
    end

    private

      def link_presenter_class
        SingleUseLinkPresenter
      end
  end
end