ontohub/ontohub

module Hets
  module DG
    module NodeEvaluationHelper
      def clean_ontology(ontology)
        ontology.symbols.destroy_all
        ontology.all_sentences.destroy_all
        ontology.symbols_count = 0
        ontology.sentences_count = 0
        ontology.axioms_count = 0
        ontology.theorems_count = 0
        ontology.save!
      end

      def assign_language(ontology, current_element)
        if current_element['language']
          iri = "http://purl.net/dol/language/#{current_element['language']}"
          ontology.language = Language.where(iri: iri)
            .first_or_create(user: user, name: current_element['language'])
        end
      end

      def assign_logic(ontology, current_element)
        if current_element['logic']
          iri = "http://purl.net/dol/logics/#{current_element['logic']}"
          ontology.logic = Logic.where(iri: iri)
            .first_or_create(user: user, name: current_element['logic'])
        end
      end

      def assign_distributed_ontology_logic(ontology)
        iri = "http://purl.net/dol/logics/#{Logic::DEFAULT_DISTRIBUTED_ONTOLOGY_LOGIC}"
        name = Logic::DEFAULT_DISTRIBUTED_ONTOLOGY_LOGIC
        ontology.logic = Logic.where(iri: iri)
          .first_or_create(user: user, name: name)
      end

      def procure_child_ontology(internal_iri)
        # generate IRI for child-ontology
        child_locid = parent_ontology.locid_for_child(internal_iri)

        # find or create child-ontology by IRI
        ontology = parent_ontology.all_children.find_with_locid(child_locid)
        if ontology.nil?
          options = {
            name: internal_iri,
            basepath: parent_ontology.basepath,
            file_extension: parent_ontology.file_extension,
            repository_id: parent_ontology.repository_id,
          }
          ontology = SingleOntology.new(options, without_protection: true)
          parent_ontology.children << ontology
        end
        ontology.present = true
        ontology.save! if ontology.changed? || !ontology.persisted?

        version = ontology.versions.build
        version.basepath = ontology.basepath
        version.parent = parent_version
        version.commit_oid = parent_version.try(:commit_oid)
        version.commit = parent_version.try(:commit)
        version.file_extension = ontology.file_extension

        importer.versions << version

        ontology
      end

      def parent_version
        importer.version if parent_ontology
      end

      def alias_iris_for_mappings!(current_element)
        aliases = importer.ontology_aliases
        current_element['source_iri'] = aliases[current_element['source']]
        current_element['target_iri'] = aliases[current_element['target']]
      end

      def generate_ontology_iri(internal_iri, current_element)
        if current_element['reference'] == 'true'
          ontology = Ontology.find_with_iri(internal_iri)
          if ontology.nil?
            ontohub_iri = ExternalRepository.determine_iri(internal_iri)
          else
            ontohub_iri = ontology.iri
          end
        else
          if parent_ontology.distributed?
            ontohub_iri = parent_ontology.locid_for_child(internal_iri)
          else
            # we use 0 here, because the first time around, we
            # have ontologies_count 0 which is increased by one
            # after obtaining the lock. We need to preempt
            # this message, because otherwise we would
            # fail here with a lock issue instead of the
            # 'more than one ontology' issue.
            if importer.ontologies_count > 0
              raise "more than one #{Settings.OMS} found"
            else
              ontohub_iri = parent_ontology.iri
            end
          end
        end
      end

      def procure_ontology(element, iri)
        if element['reference'] == 'true'
          ontology = Ontology.find_with_iri(iri)
          if ontology.nil?
            ontology = ExternalRepository.create_ontology(iri)
          end
          importer.ontology_aliases[element['name']] = ontology.iri
        else
          importer.ontologies_count += 1
          if parent_ontology.distributed?
            unless parent_ontology.changed_attributes.keys.include?('logic_id')
              assign_distributed_ontology_logic(parent_ontology)
            end

            ontology = procure_child_ontology(iri)
          else
            ontology = parent_ontology
            ontology.present = true
          end
        end
        clean_ontology(ontology)
        ontology
      end

      def code_reference_from_range(range)
        return if range.nil?
        match = range.match( %r{
          (?<begin_line>\d+)\.
          (?<begin_column>\d+)
          -
          (?<end_line>\d+)\.
          (?<end_column>\d+)}x)
        if match
          reference = CodeReference.new(begin_line: match[:begin_line].to_i,
            begin_column: match[:begin_column].to_i,
            end_line: match[:end_line].to_i,
            end_column: match[:end_column].to_i)
        end
      end

      # if it is possible for ontologies to be a relation we should optimize the
      # call by using #select instead of #map.
      def update_ontologies_per_logic_count!(ontologies)
        Logic.where(id: ontologies.map(&:logic_id)).pluck(:id).each do |logic_id|
          Logic.reset_counters(logic_id, :ontologies)
        end
      end

      def set_all_children_inactive_except(present_ontologies)
        return if parent_ontology.nil?
        parent_ontology.all_children.each do |child|
          unless present_ontologies.include?(child.name)
            child.present = false
            child.save!
          end
        end
      end
    end
  end
end