# unpack associated resource
# Reader - ADIwg JSON to internal data structure

# History:
#  Stan Smith 2018-06-15 refactored error and warning messaging
#  Stan Smith 2016-10-18 refactored for mdJson 2.0
#  Stan Smith 2015-07-14 refactored to remove global namespace constants
#  Stan Smith 2015-06-22 replace global ($response) with passed in object (responseObj)
#  Stan Smith 2014-12-30 added return if empty input
#  Stan Smith 2014-12-15 refactored to handle namespacing readers and writers
#  Stan Smith 2014-11-06 added resourceType for 0.9.0
#  Stan Smith 2014-11-06 changed resourceType to initiative type for 0.9.0
#  Stan Smith 2014-08-18 moved resourceIdentifier to citation module schema 0.6.0
#  Stan Smith 2014-07-08 resolve require statements using Mdtranslator.reader_module
# 	Stan Smith 2014-06-02 added resource metadata citation section
# 	Stan Smith 2014-05-28 added resource identifier section
# 	Stan Smith 2014-05-02 original script

require_relative 'module_citation'

module ADIWG
   module Mdtranslator
      module Readers
         module MdJson

            module AssociatedResource

               def self.unpack(hAssocRes, responseObj)

                  @MessagePath = ADIWG::Mdtranslator::Readers::MdJson::MdJson

                  # return nil object if input is empty
                  if hAssocRes.empty?
                     @MessagePath.issueWarning(30, responseObj)
                     return nil
                  end

                  # instance classes needed in script
                  intMetadataClass = InternalMetadata.new
                  intAssocRes = intMetadataClass.newAssociatedResource

                  # associated resource - resource type [] (required) {resourceType}
                  if hAssocRes.has_key?('resourceType')
                     hAssocRes['resourceType'].each do |item|
                        unless item.empty?
                           hReturn = ResourceType.unpack(item, responseObj)
                           unless hReturn.nil?
                              intAssocRes[:resourceTypes] << hReturn
                           end
                        end
                     end
                  end
                  if intAssocRes[:resourceTypes].empty?
                     @MessagePath.issueError(31, responseObj)
                  end

                  # associated resource - association type (required)
                  if hAssocRes.has_key?('associationType')
                     intAssocRes[:associationType] = hAssocRes['associationType']
                  end
                  if intAssocRes[:associationType].nil? || intAssocRes[:associationType] == ''
                     @MessagePath.issueError(32, responseObj)
                  end

                  # associated resource - initiative type
                  if hAssocRes.has_key?('initiativeType')
                     if hAssocRes['initiativeType'] != ''
                        intAssocRes[:initiativeType] = hAssocRes['initiativeType']
                     end
                  end

                  # associated resource - resource citation (required) {CI_Citation}
                  if hAssocRes.has_key?('resourceCitation')
                     hObject = hAssocRes['resourceCitation']
                     unless hObject.empty?
                        hReturn = Citation.unpack(hObject, responseObj)
                        unless hReturn.nil?
                           intAssocRes[:resourceCitation] = hReturn
                        end
                     end
                  end
                  if intAssocRes[:resourceCitation].empty?
                     @MessagePath.issueError(33, responseObj)
                  end

                  # associated resource - metadata citation
                  if hAssocRes.has_key?('metadataCitation')
                     hObject = hAssocRes['metadataCitation']
                     unless hObject.empty?
                        hReturn = Citation.unpack(hObject, responseObj)
                        unless hReturn.nil?
                           intAssocRes[:metadataCitation] = hReturn
                        end
                     end
                  end

                  return intAssocRes

               end

            end

         end
      end
   end
end