133 lines
3.1 KiB
Ruby
133 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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class MapExportService
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attr_reader :user, :map
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def initialize(user, map)
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@user = user
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@map = map
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end
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def json
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# marshal_dump turns OpenStruct into a Hash
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{
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topics: exportable_topics.map(&:marshal_dump),
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synapses: exportable_synapses.map(&:marshal_dump)
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}
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end
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def csv(options = {})
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CSV.generate(options) do |csv|
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to_spreadsheet.each do |line|
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csv << line
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end
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end
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end
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def rdf
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output = ''
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output += rdf_header
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output += rdf_mappers
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output += rdf_topics
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output += rdf_synapses
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output
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end
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private
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def topic_headings
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[:id, :name, :metacode, :x, :y, :description, :link, :user, :permission]
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end
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def synapse_headings
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[:topic1, :topic2, :category, :description, :user, :permission]
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end
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def exportable_topics
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visible_topics ||= Pundit.policy_scope!(user, map.topics)
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topic_mappings = Mapping.includes(mappable: [:metacode, :user])
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.where(mappable: visible_topics, map: map)
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topic_mappings.map do |mapping|
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topic = mapping.mappable
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next nil if topic.nil?
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OpenStruct.new(
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id: topic.id,
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name: topic.name,
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metacode: topic.metacode.name,
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x: mapping.xloc,
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y: mapping.yloc,
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description: topic.desc,
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link: topic.link,
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user: topic.user.name,
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permission: topic.permission
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)
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end.compact
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end
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def exportable_synapses
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visible_synapses = Pundit.policy_scope!(user, map.synapses)
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visible_synapses.map do |synapse|
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next nil if synapse.nil?
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OpenStruct.new(
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topic1: synapse.topic1_id,
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topic2: synapse.topic2_id,
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category: synapse.category,
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description: synapse.desc,
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user: synapse.user.name,
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permission: synapse.permission
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)
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end.compact
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end
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def to_spreadsheet
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spreadsheet = []
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spreadsheet << ['Topics']
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spreadsheet << topic_headings.map(&:capitalize)
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exportable_topics.each do |topics|
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# convert exportable_topics into an array of arrays
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spreadsheet << topic_headings.map { |h| topics.send(h) }
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end
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spreadsheet << []
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spreadsheet << ['Synapses']
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spreadsheet << synapse_headings.map(&:capitalize)
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exportable_synapses.each do |synapse|
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# convert exportable_synapses into an array of arrays
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spreadsheet << synapse_headings.map { |h| synapse.send(h) }
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end
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spreadsheet
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end
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def rdf_header
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output = ''
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output += "PREFIX d: <https://metamaps.cc/maps/#{map.id}>\n"
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output += "PREFIX gr: <https://metamaps.cc/owl/map.owl.ttl>\n"
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output += "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n"
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output += "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n"
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output += "\n"
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output
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end
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def rdf_mappers
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output = ''
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map.contributors.each do |mapper|
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output += mapper.as_rdf
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end
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output
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end
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def rdf_topics
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output = ''
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map.topics.each do |topic|
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output += topic.as_rdf
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end
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output
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end
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def rdf_synapses
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output = ''
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map.synapses.each do |synapse|
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output += synapse.as_rdf
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end
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output
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end
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end
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