require 'virtus'

module Effective
  module Snippets
    class Snippet
      include Virtus.model

      attribute :id, String # This will be snippet_12345
      attribute :region, Effective::Region # The region Object

      # SO I have to add some restrictions on how snippets are built:

      # Each Snippet has to be a block (or inline) element with nested children.
      # It has to start with a root object
      # That root object has to do {snippet_data(snippet)}

      # This is used by the effective_regions_helper effective_regions_include_tags
      # And ends up in the javascript CKEDITOR.config['effective_regions'] top level namespace
      def self.all(controller = nil)
        {}.tap do |all_snippets|
          EffectiveRegions.snippets.each do |snippet|
            all_snippets[snippet.class_name] = {
              :dialog_url => snippet.snippet_dialog_url,
              :label => snippet.snippet_label,
              :description => snippet.snippet_description,
              :inline => snippet.snippet_inline,
              :editables => snippet.snippet_editables,
              :tag => snippet.snippet_tag.to_s
            }
          end
        end
      end

      def initialize(atts = {})
        (atts || {}).each { |k, v| self.send("#{k}=", v) if respond_to?("#{k}=") }
      end

      def id
        super.presence || "snippet_#{object_id}"
      end

      def data
        self.attributes.reject { |k, v| [:region, :id].include?(k) }
      end

      def to_partial_path
        "effective/snippets/#{class_name}"
      end

      def class_name
        @class_name ||= self.class.name.demodulize.underscore.to_sym
      end

      ### The following methods are used for the CKEditor widget creation.
      def snippet_label
        class_name.to_s.humanize
      end

      def snippet_description
        "Insert #{snippet_label}"
      end

      def snippet_dialog_url
        "/assets/effective/snippets/#{class_name}.js"
      end

      # This is the tag that the ckeditor snippet will be created as
      # It supports divs and spans, but that's it
      # No ULs, or LIs
      def snippet_tag
        :div
      end

      def snippet_inline
        [:span].include?(snippet_tag)
      end

      def snippet_editables
        false
      end

    end
  end
end