require "fileutils"
require_relative "./front_id"

module Metanorma
  module ITU
    class Converter < Standoc::Converter
      def metadata_status(node, xml)
        stage = node.attr("status") || node.attr("docstage") || "published"
        stage = "draft" if node.attributes.has_key?("draft")
        xml.status do |s|
          s.stage stage
        end
      end

      def relaton_relations
        super + %w(complements)
      end

      def insert_title(xml, type, lang, content)
        attr = { language: lang, format: "text/plain", type: type }
        xml.title **attr_code(attr) do |t|
          t << Metanorma::Utils::asciidoc_sub(content)
        end
      end

      def title_defaultlang(node, xml)
        a = node.attr("title") || node.attr("title-#{@lang}") || node.title
        insert_title(xml, "main", @lang, a)
        if a = node.attr("annextitle") || node.attr("annextitle-#{@lang}")
          insert_title(xml, "annex", @lang, a)
        end
      end

      def title_otherlangs(node, xml)
        node.attributes.each do |k, v|
          /^(?:annex)?title-(?<lang>.+)$/ =~ k or next
          lang == @lang and next
          type = /^annex/.match?(k) ? "annex" : "main"
          insert_title(xml, type, lang, v)
        end
      end

      def title(node, xml)
        title_defaultlang(node, xml)
        title_otherlangs(node, xml)
        %w(subtitle amendment-title corrigendum-title collection-title
           slogan-title).each do |t|
          other_title_defaultlang(node, xml, t)
          other_title_otherlangs(node, xml, t)
        end
      end

      def other_title_defaultlang(node, xml, type)
        a = node.attr(type) || node.attr("#{type}-#{@lang}")
        insert_title(xml, type.sub(/-title/, ""), @lang, a)
      end

      def other_title_otherlangs(node, xml, type)
        node.attributes.each do |k, v|
          m = /^#{type}-(?<lang>.+)$/.match(k) or next
          m[:lang] == @lang and next
          insert_title(xml, type.sub(/-title/, ""), m[:lang], v)
        end
      end

      def default_publisher
        @i18n.get["ITU"] || @i18n.international_telecommunication_union
      end

      def org_abbrev
        if @i18n.get["ITU"]
          { @i18n.international_telecommunication_union => @i18n.get["ITU"] }
        else {} end
      end

      def metadata_committee(node, xml)
        hyphenate_node_attributes(node)
        metadata_sector(node, xml)
        metadata_committee1(node, xml, "")
        suffix = 2
        while node.attr("bureau_#{suffix}")
          metadata_committee1(node, xml, "_#{suffix}")
          suffix += 1
        end
        metadata_question(node, xml)
      end

      def hyphenate_node_attributes(node)
        a = node.attributes.dup
        a.each do |k, v|
          /group(type|acronym)/.match?(k) and
            node.set_attr(k.sub(/group(type|acronym)/, "group-\\1"), v)
          /group(yearstart|yearend)/.match?(k) and
            node.set_attr(k.sub(/groupyear(start|end)/, "group-year-\\1"), v)
        end
      end

      def metadata_sector(node, xml)
        s = node.attr("sector") or return
        xml.editorialgroup do |a|
          a.sector { |x| x << s }
        end
      end

      def metadata_question(node, xml)
        vals = csv_split(node.attr("question"), ",").map do |s1|
          t, v = s1.split(":", 2).map(&:strip)
          { id: t, value: v }
        end
        vals.each do |v|
          xml.question do |q|
            a = v[:id] and q.identifier a
            a = v[:value] and q.name a
          end
        end
      end

      def metadata_committee1(node, xml, suffix)
        xml.editorialgroup do |a|
          a.bureau ( node.attr("bureau#{suffix}") || "T")
          ["", "sub", "work"].each do |p|
            node.attr("#{p}group#{suffix}") or next
            type = node.attr("#{p}group-type#{suffix}")
            a.send "#{p}group", **attr_code(type: type) do |g|
              metadata_committee2(node, g, suffix, p)
            end
          end
        end
      end

      def metadata_committee2(node, group, suffix, prefix)
        group.name node.attr("#{prefix}group#{suffix}")
        a = node.attr("#{prefix}group-acronym#{suffix}") and group.acronym a
        s, e = group_period(node, prefix, suffix)
        group.period do |p|
          p.start s
          p.end e
        end
      end

      def group_period(node, prefix, suffix)
        s = node.attr("#{prefix}group-year-start#{suffix}") ||
          Date.today.year - (Date.today.year % 2)
        e = node.attr("#{prefix}group-year-end#{suffix}") || s.to_i + 2
        [s, e]
      end

      def metadata_series(node, xml)
        { series: "main", series1: "secondary", series2: "tertiary" }
          .each do |k, v|
          node.attr(k.to_s) and
            xml.series **{ type: v } do |s|
              s.title node.attr(k.to_s)
            end
        end
      end

      def metadata_recommendationstatus(node, xml)
        node.attr("recommendation-from") || node.attr("approval-process") or
          return
        xml.recommendationstatus do |s|
          a = node.attr("recommendation-from") and s.from a
          a = node.attr("recommendation-to") and s.to a
          node.attr("approval-process") and
            s.approvalstage **{ process: node.attr("approval-process") } do |x|
              x << node.attr("approval-status")
            end
        end
      end

      def metadata_ip_notice(node, xml)
        xml.ip_notice_received (node.attr("ip-notice-received") || "false")
      end

      def metadata_techreport(node, xml)
        a = node.attr("meeting") and
          metadata_meeting(a, node.attr("meeting-acronym"), xml)
        a = node.attr("meeting-place") and xml.meeting_place a
        a = node.attr("meeting-date") and metadata_meeting_date(a, xml)
        a = node.attr("intended-type") and xml.intended_type a
        a = node.attr("source") and xml.source a
      end

      def metadata_meeting(mtg, acronym, xml)
        xml.meeting **attr_code(acronym: acronym) do |m|
          m << mtg
        end
      end

      def metadata_contribution(node, xml)
        %w(timing).each do |k|
          a = node.attr(k) and xml.send k, a
        end
      end

      def metadata_meeting_date(val, xml)
        xml.meeting_date do |m|
          d = val.split("/")
          if d.size > 1
            m.from d[0]
            m.to d[1]
          else
            m.on d[0]
          end
        end
      end

      def personal_role(node, contrib, suffix)
        if node.attr("role#{suffix}")&.downcase == "rapporteur"
          contrib.role "raporteur", **{ type: "editor" }
        else
          super
        end
      end

      def metadata_coverpage_images(node, xml)
        %w(coverpage-image).each do |n|
          if a = node.attr(n)
            xml.send n do |c|
              a.split(",").each do |x|
                c.image src: x
              end
            end
          end
        end
      end

      def metadata_ext(node, xml)
        metadata_doctype(node, xml)
        metadata_subdoctype(node, xml)
        metadata_committee(node, xml)
        metadata_ics(node, xml)
        metadata_recommendationstatus(node, xml)
        metadata_ip_notice(node, xml)
        metadata_techreport(node, xml)
        metadata_contribution(node, xml)
        structured_id(node, xml)
        metadata_coverpage_images(node, xml)
      end
    end
  end
end