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

module IsoDoc
  module Rsd

    # A {Converter} implementation that generates HTML output, and a document
    # schema encapsulation of the document for validation
    #
    class HtmlConvert < IsoDoc::HtmlConvert
      def initialize(options)
        @libdir = File.dirname(__FILE__)
        super
        #system "cp #{html_doc_path('logo.svg')} logo.svg"
        FileUtils.cp html_doc_path('logo.svg'), "logo.svg"
        @files_to_delete << "logo.svg"
      end

      def default_fonts(options)
        {
          bodyfont: (options[:script] == "Hans" ? '"SimSun",serif' : '"Overpass",sans-serif'),
          headerfont: (options[:script] == "Hans" ? '"SimHei",sans-serif' : '"Overpass",sans-serif'),
          monospacefont: '"Space Mono",monospace'
        }
      end

      def default_file_locations(_options)
        {
          htmlstylesheet: html_doc_path("htmlstyle.scss"),
          htmlcoverpage: html_doc_path("html_rsd_titlepage.html"),
          htmlintropage: html_doc_path("html_rsd_intro.html"),
          scripts: html_doc_path("scripts.html"),
        }
      end

      def metadata_init(lang, script, labels)
        @meta = Metadata.new(lang, script, labels)
      end

      def html_head
        <<~HEAD.freeze
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

    <!--TOC script import-->
    <script type="text/javascript" src="https://cdn.rawgit.com/jgallen23/toc/0.3.2/dist/toc.min.js"></script>

    <!--Google fonts-->
    <link href="https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,600,600i|Space+Mono:400,700" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css?family=Overpass:300,300i,600,900" rel="stylesheet">
    <!--Font awesome import for the link icon-->
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.8/css/solid.css" integrity="sha384-v2Tw72dyUXeU3y4aM2Y0tBJQkGfplr39mxZqlTBDUZAb9BGoC40+rdFCG0m10lXk" crossorigin="anonymous">
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.8/css/fontawesome.css" integrity="sha384-q3jl8XQu1OpdLgGFvNRnPdj5VIlCvgsDQTQB6owSOHWlAurxul7f+JpUOVdAiJ5P" crossorigin="anonymous">
    <style class="anchorjs"></style>
        HEAD
      end

      def make_body(xml, docxml)
        body_attr = { lang: "EN-US", link: "blue", vlink: "#954F72", "xml:lang": "EN-US", class: "container" }
        xml.body **body_attr do |body|
          make_body1(body, docxml)
          make_body2(body, docxml)
          make_body3(body, docxml)
        end
      end

      def html_toc(docxml)
        docxml
      end

      def annex_name(annex, name, div)
        div.h1 **{ class: "Annex" } do |t|
          t << "#{get_anchors[annex['id']][:label]} "
          t << "<b>#{name.text}</b>"
        end
      end

      def annex_name_lbl(clause, num)
        obl = l10n("(#{@inform_annex_lbl})")
        obl = l10n("(#{@norm_annex_lbl})") if clause["obligation"] == "normative"
        l10n("<b>#{@annex_lbl} #{num}</b> #{obl}")
      end

      def pre_parse(node, out)
        out.pre node.text # content.gsub(/</, "&lt;").gsub(/>/, "&gt;")
      end

      def term_defs_boilerplate(div, source, term, preface)
        if source.empty? && term.nil?
          div << @no_terms_boilerplate
        else
          div << term_defs_boilerplate_cont(source, term)
        end
      end

      def i18n_init(lang, script)
        super
        @annex_lbl = "Appendix"
      end

      def error_parse(node, out)
        # catch elements not defined in ISO
        case node.name
        when "pre"
          pre_parse(node, out)
        when "keyword"
          out.span node.text, **{ class: "keyword" }
        else
          super
        end
      end

      def fileloc(loc)
        File.join(File.dirname(__FILE__), loc)
      end

      def cleanup(docxml)
        super
        term_cleanup(docxml)
      end

      def term_cleanup(docxml)
        docxml.xpath("//p[@class = 'Terms']").each do |d|
          h2 = d.at("./preceding-sibling::*[@class = 'TermNum'][1]")
          h2.add_child("&nbsp;")
          h2.add_child(d.remove)
        end
        docxml
      end

      def info(isoxml, out)
        @meta.security isoxml, out
        super
      end

      def annex_name(annex, name, div)
        div.h1 **{ class: "Annex" } do |t|
          t << "#{get_anchors[annex['id']][:label]} "
          t << "<b>#{name.text}</b>"
        end
      end

      def annex_name_lbl(clause, num)
        obl = l10n("(#{@inform_annex_lbl})")
        obl = l10n("(#{@norm_annex_lbl})") if clause["obligation"] == "normative"
        l10n("<b>#{@annex_lbl} #{num}</b> #{obl}")
      end

      def pre_parse(node, out)
        out.pre node.text # content.gsub(/</, "&lt;").gsub(/>/, "&gt;")
      end

      def term_defs_boilerplate(div, source, term, preface)
        if source.empty? && term.nil?
          div << @no_terms_boilerplate
        else
          div << term_defs_boilerplate_cont(source, term)
        end
      end

      def i18n_init(lang, script)
        super
        @annex_lbl = "Appendix"
      end

      def error_parse(node, out)
        # catch elements not defined in ISO
        case node.name
        when "pre"
          pre_parse(node, out)
        when "keyword"
          out.span node.text, **{ class: "keyword" }
        else
          super
        end
      end

      def fileloc(loc)
        File.join(File.dirname(__FILE__), loc)
      end

      def cleanup(docxml)
        super
        term_cleanup(docxml)
      end

      def term_cleanup(docxml)
        docxml.xpath("//p[@class = 'Terms']").each do |d|
          h2 = d.at("./preceding-sibling::*[@class = 'TermNum'][1]")
          h2.add_child("&nbsp;")
          h2.add_child(d.remove)
        end
        docxml
      end

    end
  end
end