Parse a Podcast feed into episodes

episode.rb

class Episode
  def self.from_rss_feed(url)
    xml = Nokogiri.parse(Net::HTTP.get(URI(url)))
    xml.xpath('//channel/item').map do |item|
      new(
        title: item.at_xpath('title').text,
        subtitle: item.at_xpath('itunes:subtitle').text,
        link: item.at_xpath('link').text,
        audio_url: item.at_xpath('enclosure')[:url],
        duration: item.at_xpath('itunes:duration').text
      )
    end
  end

  def initialize(title:, subtitle:, link:, audio_url:, duration:)
    @title = title
    @subtitle = subtitle
    @link = link
    @audio_url = audio_url
    @duration = duration
  end
end