Contents

# frozen_string_literal: true

require 'rss'

module Html2rss
  class AutoSource
    ##
    # Converts the autosourced channel and articles to an RSS feed.
    class RssBuilder
      def self.add_guid(article, maker)
        maker.guid.tap do |guid|
          guid.content = article.guid
          guid.isPermaLink = false
        end
      end

      def self.add_image(article, maker)
        url = article.image || return

        maker.enclosure.tap do |enclosure|
          enclosure.url = url
          enclosure.type = Html2rss::Utils.guess_content_type_from_url(url)
          enclosure.length = 0
        end
      end

      def initialize(channel:, articles:)
        @channel = channel
        @articles = articles
      end

      def call
        RSS::Maker.make('2.0') do |maker|
          Html2rss::RssBuilder::Stylesheet.add(maker, channel.stylesheets)

          make_channel(maker.channel)
          make_items(maker)
        end
      end

      private

      attr_reader :channel, :articles

      def make_channel(maker)
        %i[language title description ttl].each do |key|
          maker.public_send(:"#{key}=", channel.public_send(key))
        end

        maker.link = channel.url
        maker.generator = channel.generator
        maker.updated = channel.last_build_date
      end

      def make_items(maker)
        articles.each do |article|
          maker.items.new_item do |item_maker|
            RssBuilder.add_guid(article, item_maker)
            RssBuilder.add_image(article, item_maker)

            item_maker.title = article.title
            item_maker.description = article.description
            item_maker.pubDate = article.published_at
            item_maker.link = article.url
          end
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
html2rss-0.15.0	lib/html2rss/auto_source/rss_builder.rb
html2rss-0.14.0	lib/html2rss/auto_source/rss_builder.rb