require "alephant/logger"
require "alephant/broker/component"

module Alephant
  module Broker
    module Request
      class Batch
        include Logger

        attr_reader :batch_id, :components, :load_strategy

        def initialize(component_factory, env)
          @batch_id = if env.data
                        env.data["batch_id"]
                      else
                        env.options.fetch("batch_id", nil)
                      end

          logger.debug(
            method: "Request::Batch#initialize",
            id:     batch_id,
          )

          @component_factory = component_factory

          @components = env.post? ? components_post(env) : components_get(env)
        end

        private

        def components_post(env)
          ((env.data || {}).fetch("components", []) || []).map do |c|
            create_component(c["component"], batch_id, c["options"])
          end
        end

        def components_get(env)
          (env.options.fetch("components", []) || []).map do |c|
            options = c[1].fetch("options", {}) || {}
            create_component(c[1]["component"], batch_id, options)
          end
        end

        def create_component(component, batch_id, options)
          @component_factory.create(component, batch_id, options)
        end
      end
    end
  end
end