require 'glimmer'
require 'glimmer/xml/depth_first_search_iterator'
require 'glimmer/xml/xml_visitor'

module Glimmer
  module XML
    class Node
      include Glimmer

      attr_accessor :children, :name, :contents, :attributes, :is_name_space, :is_attribute, :name_space, :parent

      def initialize(parent, name, attributes, &contents)
        @is_name_space = false
        @children = []
        @parent = parent
        if attributes.is_a?(Array)
          attributes = attributes.compact
          hash_attributes = attributes.last.is_a?(Hash) ? attributes.delete(attributes.last) : {}
          hash_attributes = attributes.reduce(hash_attributes) do |hash, attribute|
            hash.merge(attribute => nil)
          end
          attributes = hash_attributes
        end
        if (parent and parent.is_name_space)
          @name_space = parent
          @parent = @name_space.parent
        end
        @parent.children << self if @parent
        @name = name
        @contents = contents
        @attributes = attributes
        if @attributes
          @attributes.each_key do |attribute|
            if attribute.is_a?(Node)
              attribute.is_attribute = true
              attribute.parent.children.delete(attribute) if attribute.parent
              attribute.parent = nil #attributes do not usually have parents
            end
          end
          Glimmer.logger&.debug(attributes)
        end
      end

      def method_missing(symbol, *args, &block)
        @is_name_space = true
        parent.children.delete(self) if parent
        Glimmer::DSL::Engine.add_content(self, Glimmer::DSL::XML::HtmlExpression.new) {@tag = super}
        @tag
      end

      def to_xml
        xml_visitor = XmlVisitor.new
        DepthFirstSearchIterator.new(self, xml_visitor).iterate
        xml_visitor.document
      end
      alias to_html to_xml
      alias to_s to_xml

      def text_command(text)
        "text \"#{text}\""
      end

      def rubyize(text)
        text = text.gsub(/[}]/, '"}')
        text = text.gsub(/[{]/, '{"')
        text = text.gsub(/[#]/, '')
      end

      #override Object default id method and route it to Glimmer engine
      def id
        method_missing(:id)
      end
    end
  end
end