# ISO <<Class>> LI_Source
# 19115-2 writer output in XML

# History:
#  Stan Smith 2016-12-07 refactored for mdTranslator/mdJson 2.0
#  Stan Smith 2015-07-14 refactored to eliminate namespace globals $WriterNS and $IsoNS
#  Stan Smith 2015-07-14 refactored to make iso19110 independent of iso19115_2 classes
#  Stan Smith 2015-06-22 replace global ($response) with passed in object (hResponseObj)
#  Stan Smith 2014-12-12 refactored to handle namespacing readers and writers
#  Stan Smith 2014-07-09 modify require statements to function in RubyGem structure
# 	Stan Smith 2013-11-20 original script.

require_relative 'class_fraction'
require_relative 'class_referenceSystem'
require_relative 'class_citation'
require_relative 'class_processStep'

module ADIWG
   module Mdtranslator
      module Writers
         module Iso19115_2

            class LI_Source

               def initialize(xml, hResponseObj)
                  @xml = xml
                  @hResponseObj = hResponseObj
               end

               def writeXML(hSource)

                  # classes used
                  fractionClass = MD_RepresentativeFraction.new(@xml, @hResponseObj)
                  systemClass = MD_ReferenceSystem.new(@xml, @hResponseObj)
                  citationClass = CI_Citation.new(@xml, @hResponseObj)
                  stepClass = LI_ProcessStep.new(@xml, @hResponseObj)

                  # source - id
                  attributes = {}
                  s = hSource[:sourceId]
                  unless s.nil?
                     attributes = { id: s.gsub(/[^0-9A-Za-z]/,'') }
                  end

                  @xml.tag!('gmd:LI_Source', attributes) do

                     # source - description
                     s = hSource[:description]
                     unless s.nil?
                        @xml.tag!('gmd:description') do
                           @xml.tag!('gco:CharacterString', s)
                        end
                     end
                     if s.nil? && @hResponseObj[:writerShowTags]
                        @xml.tag!('gmd:description')
                     end

                     # source - scale denominator
                     hResolution = hSource[:spatialResolution]
                     unless hResolution[:scaleFactor].nil?
                        @xml.tag!('gmd:scaleDenominator') do
                           fractionClass.writeXML(hResolution[:scaleFactor])
                        end
                     end
                     if hResolution[:scaleFactor].nil? && @hResponseObj[:writerShowTags]
                        @xml.tag!('gmd:scaleDenominator')
                     end

                     # source - reference system
                     hSystem = hSource[:referenceSystem]
                     unless hSystem.empty?
                        @xml.tag!('gmd:sourceReferenceSystem') do
                           systemClass.writeXML(hSystem)
                        end
                     end
                     if hSystem.empty? && @hResponseObj[:writerShowTags]
                        @xml.tag!('gmd:sourceReferenceSystem')
                     end

                     # source - citation
                     hCitation = hSource[:sourceCitation]
                     unless hCitation.empty?
                        @xml.tag!('gmd:sourceCitation') do
                           citationClass.writeXML(hCitation, 'lineage source')
                        end
                     end
                     if hCitation.empty? && @hResponseObj[:writerShowTags]
                        @xml.tag!('gmd:sourceCitation')
                     end

                     # source - extent [] (not implemented)

                     # source - process step []
                     aSteps = hSource[:sourceSteps]
                     aSteps.each do |hStep|
                        @xml.tag!('gmd:sourceStep') do
                           stepClass.writeXML(hStep)
                        end
                     end
                     if aSteps.empty? && @hResponseObj[:writerShowTags]
                        @xml.tag!('gmd:sourceStep')
                     end

                  end # gmd:LI_Source tag
               end # writeXML
            end # LI_Source class

         end
      end
   end
end