require "isodoc"
require_relative "metadata"
require "fileutils"

module IsoDoc
  module ITU
    # A {Converter} implementation that generates Word output, and a document
    # schema encapsulation of the document for validation

    class WordConvert < IsoDoc::WordConvert
      def initialize(options)
        @libdir = File.dirname(__FILE__)
        super
      end

      def make_body(xml, docxml)
        body_attr = { lang: "EN-US", link: "blue", vlink: "#954F72" }
        xml.body **body_attr do |body|
          make_body1(body, docxml)
          make_body2(body, docxml)
          make_body3(body, docxml)
        end
      end
      
      def make_body2(body, docxml)
        body.div **{ class: "WordSection2" } do |div2|
          info docxml, div2 
          abstract docxml, div2
          keywords docxml, div2
          preface docxml, div2
          div2.p { |p| p << "&nbsp;" } # placeholder
        end
        section_break(body)
      end

      def abstract(isoxml, out)
        f = isoxml.at(ns("//preface/abstract")) || return
        out.div **attr_code(id: f["id"]) do |s|
          clause_name(nil, "Summary", s, class: "AbstractTitle")
          f.elements.each { |e| parse(e, s) unless e.name == "title" }
        end
      end

      def keywords(_docxml, out)
        kw = @meta.get[:keywords]
        kw.nil? || kw.empty? and return
        out.div do |div|
          clause_name(nil, "Keywords", div,  class: "IntroTitle")
          div.p kw.sort.join(", ") + "."
        end
      end

      def word_preface_cleanup(docxml)
        docxml.xpath("//h1[@class = 'AbstractTitle'] | "\
                     "//h1[@class = 'IntroTitle']").each do |h2|
          h2.name = "p"
          h2["class"] = "h1Preface"
        end
      end

      def word_cleanup(docxml)
        word_preface_cleanup(docxml)
        super
        docxml
      end

      def word_preface(docxml)
        super
        abstractbox = docxml.at("//div[@id='abstractbox']")
        historybox = docxml.at("//div[@id='historybox']")
        keywordsbox = docxml.at("//div[@id='keywordsbox']")
        abstract = docxml.at("//p[@class = 'h1Preface' and text() = 'Summary']/..")
        history = docxml.at("//p[@class = 'h1Preface' and text() = 'History']/..")
        keywords = docxml.at("//p[@class = 'h1Preface' and text() = 'Keywords']/..")
        abstract.parent = abstractbox if abstract && abstractbox
        history.parent = historybox if history && historybox
        keywords.parent = keywordsbox if keywords && keywordsbox
      end


      def convert1(docxml, filename, dir)
        FileUtils.cp html_doc_path('itu-document-comb.png'), File.join(@localdir, "itu-document-comb.png")
        FileUtils.cp html_doc_path('logo.png'), File.join(@localdir, "logo.png")
        super
      end

      def default_fonts(options)
        {
          bodyfont: (options[:script] == "Hans" ? '"SimSun",serif' : '"Times New Roman",serif'),
          headerfont: (options[:script] == "Hans" ? '"SimHei",sans-serif' : '"Times New Roman",serif'),
          monospacefont: '"Courier New",monospace'
        }
      end

      def default_file_locations(options)
        {
          wordstylesheet: html_doc_path("wordstyle.scss"),
          standardstylesheet: html_doc_path("itu.scss"),
          header: html_doc_path("header.html"),
          wordcoverpage: html_doc_path("word_itu_titlepage.html"),
          wordintropage: html_doc_path("word_itu_intro.html"),
          ulstyle: "l3",
          olstyle: "l2",
        }
      end

      include BaseConvert
    end
  end
end