pulibrary / orangelight / 0e37073d-109c-440c-949f-49d2aa86311b

module Requests

  class AeonUrl

    def initialize(document:, holding: nil, item: nil)

      @document = document

      @holding = holding.values.first if holding

      @item = item if item

    end

    def to_s

      aeon_url = Requests.config[:aeon_base]

      aeon_connector = "?Action=10&Form=30&"

      @compiled_string ||= "#{aeon_url}#{aeon_connector}#{query_string}"

    end

    private

      attr_reader :document

      def query_string

        "#{ctx_with_item_info.kev}&#{aeon_basic_params.to_query}"

      end

      def ctx_with_item_info

        ctx = @document.to_ctx

        if item.present?

          ctx.referent.set_metadata('iteminfo5', item['id']&.to_s)

          if item.enum_value.present?

            ctx.referent.set_metadata('volume', item.enum_value)

            ctx.referent.set_metadata('issue', item[:chron_display]) if item[:chron_display].present?

          else

            ctx.referent.set_metadata('volume', holding['location_has']&.first)

            ctx.referent.set_metadata('issue', nil)

          end

        end

        ctx

      end

      def aeon_basic_params

        {

          ReferenceNumber: @document[:id],

          CallNumber: holding['call_number'],

          Site: site,

          Location: shelf_location_code,

          SubLocation: sub_location,

          ItemInfo1: document['access_restrictions_note_display']&.first || I18n.t("requests.aeon.access_statement"),

          ItemNumber: item&.barcode,

          'rft.aucorp': document['pub_citation_display']&.first

        }.compact

      end

      def holding

        @holding ||= @document.holdings_all_display.values.first

      end

      def item

        @item ||= item_from_holding || item_from_document || Item.new({})

      end

      def item_from_holding

        item_hash = holding&.fetch('items', nil)&.first

        Item.new(item_hash.with_indifferent_access) if item_hash

      end

      def item_from_document

        item_hash = @document.holdings_all_display.values.first&.fetch('items', nil)&.first

        Item.new(item_hash.with_indifferent_access) if item_hash

      end

      def at_marquand?

        holding_location&.dig('library', 'code') == 'marquand'

      end

      def at_mudd?

        holding_location&.dig('library', 'code') == 'mudd' || thesis?

      end

      def holding_location

        ::Bibdata.holding_locations.fetch(shelf_location_code, nil)

      end

      def shelf_location_code

        holding&.fetch('location_code', nil)

      end

      def sub_location

        holding&.fetch('sub_location', nil)&.first

      end

      def thesis?

        @document.holdings_all_display&.keys&.first == "thesis"

      end

      def site

        return 'MUDD' if at_mudd?

        return 'MARQ' if at_marquand?

        'FIRE'

      end

  end

end