module ThreeScaleToolbox
  module Commands
    module ImportCommand
      module OpenAPI
        class CreateServiceStep
          include Step

          ##
          # Creates service with a given system_name
          # If service already exists, update basic settings like name and description
          def call
            # Create service and update context
            self.service = Entities::Service.create(remote: threescale_client,
                                                    service: service_settings,
                                                    system_name: service_system_name)
            puts "Created service id: #{service.id}, name: #{service_name}"
          rescue ThreeScaleToolbox::Error => e
            raise unless e.message =~ /"system_name"=>\["has already been taken"\]/

            # Update service and update context
            self.service = Entities::Service.new(id: service_id, remote: threescale_client)
            service.update_service(service_settings)
            puts "Updated service id: #{service.id}, name: #{service_name}"
          end

          private

          def service_system_name
            target_system_name || service_name.downcase.tr(' ', '_')
          end

          def service_id
            @service_id ||= fetch_service_id
          end

          def fetch_service_id
            # figure out service by system_name
            service_found = threescale_client.list_services.find do |svc|
              svc['system_name'] == service_system_name
            end
            # It should exist
            raise ThreeScaleToolbox::Error, "Service with system_name: #{service_system_name}, should exist" if service_found.nil?

            service_found['id']
          end

          def service_settings
            default_service_settings.tap do |svc|
              svc['name'] = service_name
              svc['description'] = service_description
            end
          end

          def default_service_settings
            {}
          end

          def service_name
            api_spec.title
          end

          def service_description
            api_spec.description
          end
        end
      end
    end
  end
end