module RelatonJis
  class HitCollection < RelatonBib::HitCollection
    #
    # Initialize hit collection
    #
    # @param [String] text reference
    # @param [String, nil] year year
    # @param [Nokogiri::XML::NodeSet] result <description>
    #
    def initialize(text, year = nil, result:)
      super text, year
      @array = result.map { |h| Hit.create h, self }
    end

    #
    # Find hit in collection
    #
    # @return [Hash] hash with bib ot array of missed years
    #
    def find
      missed_years = []
      y = year || ref_parts[:year]
      @array.each do |hit|
        return { bib: hit.fetch } if hit.match? ref_parts, y

        missed_years << hit.id_parts[:year] if y && hit.match?(ref_parts)
      end
      { missed_years: missed_years }
    end

    #
    # Return parts of reference
    #
    # @return [Hash] hash with parts of reference
    #
    def ref_parts
      @ref_parts ||= parse_ref text
    end

    #
    # Parse reference
    #
    # @param [String] ref reference
    #
    # @return [Hash] hash with parts of reference
    #
    def parse_ref(ref)
      %r{
        ^(?<code>\w+\s\w\s?\d+)
        (?::(?<year>\d{4}))?
        (?:/(?<expl>EXPL(?:ANATION)?)(?:\s(?<expl_num>\d+))?)?
        (?:/(?<amd>AMDENDMENT)(?:\s(?<amd_num>\d+)(?::(?<amd_year>\d{4}))?)?)?
      }x =~ ref
      { code: code, year: year, expl: expl, expl_num: expl_num, amd: amd,
        amd_num: amd_num, amd_year: amd_year }
    end
  end
end