# frozen_string_literal: true
require_relative 'template'
require 'nokogiri'

module Tilt
  # Nokogiri template implementation. See:
  # http://nokogiri.org/
  class NokogiriTemplate < Template
    DOCUMENT_HEADER = /\A<\?xml version=\"1\.0\"\?>\n?/
    self.default_mime_type = 'text/xml'

    def evaluate(scope, locals)
      if @data.respond_to?(:to_str)
        if block_given?
          super(scope, locals){yield.sub(DOCUMENT_HEADER, "")}
        else
          super
        end
      else
        ::Nokogiri::XML::Builder.new(&@data).to_xml
      end
    end

    def precompiled_preamble(locals)
      return super if locals.include? :xml
      "xml = ::Nokogiri::XML::Builder.new { |xml| }\n#{super}"
    end

    def precompiled_postamble(locals)
      "xml.to_xml"
    end

    def precompiled_template(locals)
      @data.to_str
    end
  end
end