# GML MultiPoint
# 19115-2 writer output in XML

# History:
#   Stan Smith 2016-12-05 original script

require 'adiwg/mdtranslator/internal/module_coordinates'
require_relative 'class_point'
require_relative 'class_featureProperties'

module ADIWG
    module Mdtranslator
        module Writers
            module Iso19115_2

                class MultiPoint

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

                    def writeXML(hGeoObject, hProperties, objId)

                        # classes used
                        geoPropClass = FeatureProperties.new(@xml, @hResponseObj)

                        # classes used
                        pointClass = Point.new(@xml, @hResponseObj)

                        # multiPoint attributes
                        attributes = {}

                        # multiPoint attributes - gml:id (required)
                        if objId.nil?
                            @hResponseObj[:writerMissingIdCount] = @hResponseObj[:writerMissingIdCount].succ
                            objId = 'multiPoint' + @hResponseObj[:writerMissingIdCount]
                        end
                        attributes['gml:id'] = objId

                        # multiPoint attributes - srsDimension
                        s = AdiwgCoordinates.getDimension(hGeoObject[:coordinates])
                        if !s.nil?
                            attributes[:srsDimension] = s
                        end

                        # multiPoint attributes - srsName (GeoJSON is WGS84)
                        attributes[:srsName] = 'WGS84'

                        @xml.tag!('gml:MultiPoint', attributes) do

                            # multipoint - properties for Feature
                            unless hProperties.empty?
                                geoPropClass.writeXML(hProperties)
                            end
                            if hProperties.empty? && @hResponseObj[:writerShowTags]
                                @xml.tag!('gml:description')
                                @xml.tag!('gml:identifier', {'codeSpace'=>''})
                                @xml.tag!('gml:name')
                            end

                            # multipoint - point members (required)
                            @xml.tag!('gml:pointMembers') do
                                unless hGeoObject[:coordinates].empty?
                                    aPoints = hGeoObject[:coordinates]
                                    aPoints.each do |aPoint|
                                        newPoint = {}
                                        newPoint[:type] = 'Point'
                                        newPoint[:coordinates] = aPoint
                                        pointClass.writeXML(newPoint, {}, nil)
                                    end
                                end
                            end

                        end # gml:Point tag
                    end # writeXML
                end # multiPoint class

            end
        end
    end
end