require 'rest_client'

module RailsConnector

  # connects the cloud connector to the connector service
  class ServiceCmsBackend < CmsBackend

    def begin_caching
      # TODO
    end

    def end_caching
      # TODO
    end

    def caching?
      # TODO
    end

    def find_obj_data_by(workspace, index, keys)
      raw_data = ConnectorService.query(
        "objs/query",
        :queries => keys.map do |key|
          { :type => index, :param => key }
        end,
        :workspace => workspace.id,
        :revision => workspace.revision.id
      )

      objs = {}
      raw_data["objs"].each do |obj|
        objs[obj["_id"].first] = obj
      end

      raw_data["results"].map do |query|
        query["refs"].map do |obj_ref|
          id = obj_ref["id"]

          # TODO fetch missing ObjData from Service
          raw_obj_data = objs[id] or raise "Data for Obj with id #{id} missing!"
          ObjDataFromService.new(raw_obj_data)
        end
      end
    end

  end

end