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

# History:
#   Stan Smith 2016-12-01 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 2013-11-15 original script

module ADIWG
    module Mdtranslator
        module Writers
            module Iso19115_2

                class EX_VerticalExtent

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

                    def writeXML(hVertEle)

                        @xml.tag!('gmd:EX_VerticalExtent') do

                            # vertical extent - minimum value (required)
                            s = hVertEle[:minValue]
                            if s.nil?
                                @xml.tag!('gmd:minimumValue', {'gco:nilReason' => 'missing'})
                            else
                                @xml.tag!('gmd:minimumValue') do
                                    @xml.tag!('gco:Real', s)
                                end
                            end

                            # vertical extent - maximum value (required)
                            s = hVertEle[:maxValue]
                            if s.nil?
                                @xml.tag!('gmd:maximumValue', {'gco:nilReason' => 'missing'})
                            else
                                @xml.tag!('gmd:maximumValue') do
                                    @xml.tag!('gco:Real', s)
                                end
                            end

                            # vertical extent - vertical crs (attributes only) (required)
                            attributes = {}
                            title = nil
                            href = nil
                            hSpaceRef = hVertEle[:crsId]
                            unless hSpaceRef.empty?
                                hIdentifier = hSpaceRef[:systemIdentifier]
                                unless hIdentifier.empty?
                                    title = hIdentifier[:identifier]
                                    href = hIdentifier[:namespace]
                                    hCitation = hIdentifier[:citation]
                                    unless hCitation.empty?
                                        hOnline = hCitation[:onlineResources][0]
                                        unless hOnline.empty?
                                            href = hOnline[:olResURI]
                                        end
                                    end
                                end
                            end
                            unless href.nil?
                                attributes['xlink:href'] = href
                            end
                            unless title.nil?
                                attributes['xlink:title'] = title
                            end
                            unless attributes.empty?
                                @xml.tag!('gmd:verticalCRS', attributes)
                            end
                            if attributes.empty?
                                @xml.tag!('gmd:verticalCRS', {'gco:nilReason'=>'missing'})
                            end

                        end # EX_VerticalExtent tag
                    end # writeXML
                end # EX_VerticalExtent class

            end
        end
    end
end