# frozen_string_literal: true

module Lcms
  module Engine
    class ContentPresenter < Lcms::Engine::BasePresenter
      CONFIG_PATH = Rails.root.join('config', 'pdf.yml')
      DEFAULT_CONFIG = :default
      MATERIALS_CONFIG_PATH = Rails.root.join('config', 'materials_rules.yml')
      PDF_EXT = '.pdf'
      THUMB_EXT = '.jpg'

      def self.base_config
        @base_config ||= YAML.load_file(CONFIG_PATH).deep_symbolize_keys
      end

      def self.materials_config
        @materials_config ||= YAML.load_file(MATERIALS_CONFIG_PATH).deep_symbolize_keys
      end

      def base_filename
        name = short_breadcrumb(join_with: '_', with_short_lesson: true)
        "#{name}_v#{version.presence || 1}"
      end

      def config
        @config ||= self.class.base_config[DEFAULT_CONFIG].deep_merge(self.class.base_config[content_type.to_sym] || {})
      end

      def content_type
        @content_type.presence || 'none'
      end

      def footer_margin_styles
        padding_styles(align_type: 'margin')
      end

      def gdoc_folder
        "#{id}_v#{version}"
      end

      def gdoc_key
        DocumentExporter::Gdoc::Base.gdoc_key(content_type)
      end

      def initialize(obj, opts = {})
        super(obj)
        opts.each_pair do |key, value|
          instance_variable_set("@#{key}", value)
        end
      end

      def materials_config_for(type)
        self.class.materials_config[type.to_sym].flat_map do |k, v|
          v.map { |x| { k => x } }
        end
      end

      def orientation
        config[:orientation]
      end

      def padding_styles(align_type: 'padding')
        config[:padding].map { |k, v| "#{align_type}-#{k}:#{v};" }.join
      end

      private

      def document_parts_index
        @document_parts_index ||= document_parts.pluck(:placeholder, :anchor, :content, :optional)
                                    .to_h { |p| [p[0], { anchor: p[1], content: p[2], optional: p[3] }] }
      end

      def layout_content(context_type)
        layout(context_type)&.content.to_s
      end
    end
  end
end