module Renalware
  module HD
    class ProfilePresenter < DumbDelegator
      attr_reader :preference_set
      delegate :dialysis,
               :anticoagulant,
               :transport,
               :drugs,
               :care_level,
               to: :document

      delegate :dialyser,
               :dialysate_text,
               :cannulation_type,
               :needle_size,
               :single_needle,
               :temperature,
               :blood_flow,
               :has_sodium_profiling,
               :sodium_first_half,
               :sodium_second_half,
               to: :dialysis, allow_nil: true

      delegate :type,
               :loading_dose,
               :hourly_dose,
                to: :anticoagulant, allow_nil: true, prefix: true

      delegate :unit_code,
               to: :hospital_unit, prefix: true, allow_nil: true

      delegate :on_esa,
               :on_iron,
               :on_warfarin,
               to: :drugs, prefix: true, allow_nil: true

      delegate :has_transport,
               :type,
               :decided_on,
               to: :transport, prefix: true, allow_nil: true

      alias_attribute :dialysate, :dialysate_text

      def initialize(profile, preference_set: nil)
        super(profile)
        @preference_set = preference_set
      end

      def document
        ProfileDocumentPresenter.new(__getobj__.document)
      end

      def hospital_unit_hint
        if preference_set.hospital_unit.present?
          "Preference: #{@preference_set.hospital_unit}"
        end
      end

      def schedule_hint
        return if preference_set.preferred_schedule.blank?

        "Preference: #{@preference_set.preferred_schedule}"
      end

      def current_schedule
        return if schedule.blank?

        schedule.other? ? other_schedule : schedule.text
      end

      def last_update
        "#{::I18n.l(updated_at)} by #{updated_by}"
      end

      def hd_type
        document.dialysis.hd_type.try(:text)
      end

      def prescribed_times
        (60..360).step(15).map { |mins| [Duration.from_minutes(mins).to_s, mins] }
      end

      def formatted_prescribed_time
        return unless prescribed_time
        ::Renalware::Duration.from_minutes(prescribed_time).to_s
      end

      def blood_flow
        "#{dialysis.blood_flow} ml/min" unless dialysis.blood_flow.blank?
      end

      def bicarbonate
        dialysis.bicarbonate
      end

      def anticoagulant_stop_time
        return if anticoagulant.stop_time.blank?
        Duration.from_minutes(anticoagulant.stop_time).to_s
      end
    end
  end
end