kputnam/stupidedi

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lib/stupidedi/schema/functional_group_def.rb

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# frozen_string_literal: true
module Stupidedi
  using Refinements

  module Schema
    #
    # X12 standards are released three times yearly. The version codes sent in
    # the `GS08` and `ST03` elements encode the version (eg 004, 005), the
    # release (eg 0040, 0050), the subrelease (00501, 00602) and the level
    # (eg 005010)
    #
    # The release schedules look like this:
    #
    #               Approved by    Available      Ballot Results  Available for
    #     Version   Subcommitees   for Ballot     Approved        Distribution
    #     ---------------------------------------------------------------------
    #      005010     Feb 03         Jun 03         Oct 03          Jan 04
    #      005011     Jun 03         Oct 04         Feb 04          Mar 04
    #      005012     Oct 03         Feb 04         Jun 04          Jul 04
    #
    #      005020     Feb 04         Jun 04         Oct 04          Jan 05
    #      005021     Jun 04         Oct 04         Feb 05          Mar 05
    #      005022     Oct 04         Feb 05         Jun 05          Jul 05
    #
    # @see http://www.disa.org/x12org/subcommittees/dev/pdf/X12RELEASESCHED.pdf
    #
    # @see X222.pdf B.1.1.3.13 Functional Group
    # @see X222.pdf B.1.1.4.2 Functional Groups
    #
    class FunctionalGroupDef < AbstractDef
      include Inspect

      # @return [String]
      attr_reader :id

      # @return [Array<SegmentUses>]
      attr_reader :header_segment_uses

      # @return [Array<SegmentUses>]
      attr_reader :trailer_segment_uses

      # @return [Hash, Module]
      abstract :segment_dict

      def initialize(id, header_segment_uses, trailer_segment_uses)
        @id, @header_segment_uses, @trailer_segment_uses =
          id, header_segment_uses, trailer_segment_uses

        @header_segment_uses  = header_segment_uses.map{|x| x.copy(:parent => self) }
        @trailer_segment_uses = trailer_segment_uses.map{|x| x.copy(:parent => self) }
      end

      # @return [FunctionalGroupDef]
      def copy(changes = {})
        FunctionalGroupDef.new \
          changes.fetch(:id, @id),
          changes.fetch(:header_segment_uses, @header_segment_uses),
          changes.fetch(:trailer_segment_uses, @trailer_segment_uses)
      end

      # @return [String]
      def descriptor
        "transaction set #{id}"
      end

      def required?
        false
      end

      # @return [SegmentUse]
      def entry_segment_use
        @header_segment_uses.head
      end

      # @return [Array<SegmentUse>]
      def children
        @header_segment_uses + @trailer_segment_uses
      end

      # @return [Values::FunctionalGroupVal]
      def empty
        Values::FunctionalGroupVal.new(self, [], [])
      end

      def functional_group?
        true
      end

      # @return [AbstractSet<CodeList>
      def code_lists
        children.map(&:code_lists).inject(&:|)
      end

      # @return [void]
      def pretty_print(q)
        q.text("FunctionalGroupDef")
        q.group(2, "(", ")") do
          q.breakable ""
          @header_segment_uses.each do |e|
            unless q.current_group.first?
              q.text ","
              q.breakable
            end
            q.pp e
          end

          unless q.current_group.first?
            q.text ","
            q.breakable
          end
          q.text "... (TRANSACTION SETS) ..."

          @trailer_segment_uses.each do |e|
            unless q.current_group.first?
              q.text ","
              q.breakable
            end
            q.pp e
          end
        end
      end
    end
  end
end