demarches-normaliennes/app/lib/api_adresse/point_retriever.rb

class ApiAdresse::PointRetriever
  def initialize(address)
    @address = address
  end

  def point
    @point ||= convert_api_result_to_point
  end

  private

  def convert_api_result_to_point
    result = JSON.parse(ApiAdresse::API.call(@address))
    if result['features'].empty?
      Rails.logger.error "unable to find location for address #{@address}"
      return nil
    end
    RGeo::GeoJSON.decode(result['features'][0]['geometry'], json_parser: :json)
  end
end