# unpack distributor
# Reader - ADIwg JSON to internal data structure

# History:
#  Stan Smith 2018-02-18 refactored error and warning messaging
#  Stan Smith 2016-10-21 original script

require_relative 'module_responsibleParty'
require_relative 'module_orderProcess'
require_relative 'module_transferOption'

module ADIWG
   module Mdtranslator
      module Readers
         module MdJson

            module Distributor

               def self.unpack(hDistrib, responseObj)

                  # return nil object if input is empty
                  if hDistrib.empty?
                     responseObj[:readerExecutionMessages] << 'WARNING: mdJson reader: distributor object is empty'
                     return nil
                  end

                  # instance classes needed in script
                  intMetadataClass = InternalMetadata.new
                  intDistrib = intMetadataClass.newDistributor

                  # distributor - contact {responsibleParty} (required)
                  if hDistrib.has_key?('contact')
                     hObject = hDistrib['contact']
                     unless hObject.empty?
                        hReturn = ResponsibleParty.unpack(hObject, responseObj)
                        unless hReturn.nil?
                           intDistrib[:contact] = hReturn
                        end
                     end
                  end
                  if intDistrib[:contact].empty?
                     responseObj[:readerExecutionMessages] << 'ERROR: mdJson reader: distributor contact is missing'
                     responseObj[:readerExecutionPass] = false
                     return nil
                  end

                  # distributor - order process [orderProcess]
                  if hDistrib.has_key?('orderProcess')
                     aItems = hDistrib['orderProcess']
                     aItems.each do |item|
                        hReturn = OrderProcess.unpack(item, responseObj)
                        unless hReturn.nil?
                           intDistrib[:orderProcess] << hReturn
                        end
                     end
                  end

                  # distributor - transfer options [transferOption]
                  if hDistrib.has_key?('transferOption')
                     aItemss = hDistrib['transferOption']
                     aItemss.each do |item|
                        hReturn = TransferOption.unpack(item, responseObj)
                        unless hReturn.nil?
                           intDistrib[:transferOptions] << hReturn
                        end
                     end
                  end

                  return intDistrib

               end

            end

         end
      end
   end
end