require "relaton/processor"

module RelatonDoi
  class Processor < Relaton::Processor
    attr_reader :idtype

    def initialize
      @short = :relaton_doi
      @prefix = "DOI"
      @defaultprefix = %r{^doi:}
      @idtype = "DOI"
      # @datasets = %w[bipm-data-outcomes bipm-si-brochure]
    end

    # @param code [String] DOI
    # @param date [String, nil] year
    # @param opts [Hash]
    # @return [RelatonBib::BibliographicItem]
    def get(code, _date, _opts)
      Crossref.get(code)
    end

    #
    # @param [String] source source name
    # @param [Hash] opts
    # @option opts [String] :output directory to output documents
    # @option opts [String] :format
    #
    # def fetch_data(source, opts)
    #   DataFetcher.fetch(source, **opts)
    # end

    # @param xml [String]
    # @return [RelatonBipm::BipmBibliographicItem]
    def from_xml(xml)
      ::RelatonBib::XMLParser.from_xml xml
    end

    # @param hash [Hash]
    # @return [RelatonBipm::BipmBibliographicItem]
    def hash_to_bib(hash)
      ::RelatonBib::BibliographicItem.from_hash hash
    end

    # Returns hash of XML grammar
    # @return [String]
    def grammar_hash
      @grammar_hash ||= ::RelatonDoi.grammar_hash
    end

    # Returns number of threads
    # @return [Integer]
    def threads
      2
    end
  end
end