# frozen_string_literal: true
module Blacklight
  # These are methods that are used at both the view helper and controller layers
  # They are only dependent on `blacklight_config` and `@response`
  #
  module Facet
    extend Deprecation
    delegate :facet_configuration_for_field, :facet_field_names, to: :blacklight_config

    # @deprecated
    # @param [Blacklight::Configuration::Facet] field_config
    # @param [Object] response_data
    # @return [Blacklight::FacetPaginator]
    def facet_paginator(field_config, response_data)
      blacklight_config.facet_paginator_class.new(
        response_data.items,
        sort: response_data.sort,
        offset: response_data.offset,
        prefix: response_data.prefix,
        limit: Deprecation.silence(Blacklight::Catalog) { facet_limit_for(field_config.key) }
      )
    end
    deprecation_deprecate facet_paginator: 'Use Blacklight::FacetFieldPresenter#paginator instead'

    # @param fields [Array<String>] a list of facet field names
    # @return [Array<Solr::Response::Facets::FacetField>]
    # @deprecated
    def facets_from_request(fields = facet_field_names, response = nil)
      unless response
        Deprecation.warn(self, 'Calling facets_from_request without passing the ' \
          'second argument (response) is deprecated and will be removed in Blacklight ' \
          '8.0.0')
        response = @response
      end

      Deprecation.silence(Blacklight::Facet) do
        fields.map { |field| facet_by_field_name(field, response) }.compact
      end
    end
    deprecation_deprecate facets_from_request: 'Removed without replacement'

    delegate :facet_group_names, to: :blacklight_config
    deprecation_deprecate facet_group_names: 'Use blacklight_config.facet_group_names instead'

    # Get a FacetField object from the @response
    # @deprecated
    # @private
    # @return [Blacklight::Solr::Response::Facets::FacetField]
    def facet_by_field_name(field_or_field_name, response = nil)
      unless response
        Deprecation.warn(self, 'Calling facet_by_field_name without passing the ' \
          'second argument (response) is deprecated and will be removed in Blacklight ' \
          '8.0.0')
        response = @response
      end
      case field_or_field_name
      when String, Symbol
        facet_field = facet_configuration_for_field(field_or_field_name)
        response.aggregations[facet_field.field]
      when Blacklight::Configuration::FacetField
        response.aggregations[field_or_field_name.field]
      else
        # is this really a useful case?
        field_or_field_name
      end
    end
    deprecation_deprecate facet_by_field_name: 'Removed without replacement'
  end
end