Class: Podrick::Podcast

Inherits:
Object
  • Object
show all
Defined in:
lib/podrick/podcast.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(xml_string, etag = nil) ⇒ Podcast

Returns a new instance of Podcast.



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# File 'lib/podrick/podcast.rb', line 8

def initialize xml_string, etag = nil
  @xml = xml_string
  @etag = etag
end

Instance Attribute Details

#etag ⇒ Object (readonly)

Returns the value of attribute etag.



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# File 'lib/podrick/podcast.rb', line 6

def etag
  @etag
end

Class Method Details

.from_url(url, etag = nil) ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 17

def self.from_url url, etag = nil
  headers = {}

  if etag
    headers['If-None-Match'] = etag
  end

  response = Faraday.get(url, {}, headers)

  if response.status == 304
    nil
  else
    new(response.body, response.headers['ETag'])
  end
end

.from_xml(xml_string, etag = nil) ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 13

def self.from_xml xml_string, etag = nil
  new(xml_string, etag)
end

Instance Method Details

#episodes ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 81

def episodes
  @episodes ||= xml_doc.xpath('//item').map { |item_xml| Episode.new(item_xml) }
end

#itunes ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 49

def itunes
  @itunes ||= begin
    image = Struct.new(:href)
    owner = Struct.new(:name, :email)
    itunes = Struct.new(:subtitle, :author, :summary, :keywords, :explicit, :category, :subcategories, :image, :owner)

    itunes.new(
      xml_content_at("//itunes:subtitle"),
      xml_content_at("//itunes:author"),
      xml_content_at("//itunes:summary"),
      xml_content_at("//itunes:keywords"),
      xml_content_at("//itunes:explicit"),
      xml_node_at("//itunes:category")["text"],
      xml_doc.xpath("//itunes:category//itunes:category").map { |category| category["text"] },
      image.new(xml_node_at("//itunes:image")["href"]),
      owner.new(xml_content_at("//itunes:owner//itunes:name"), xml_content_at("//itunes:owner//itunes:email"))
    )
  end
end

#xml_content_at(string) ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 69

def xml_content_at string
  if node = xml_metadata.at_xpath(string)
    node.content
  end
end

#xml_doc ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 33

def xml_doc
  @xml_doc ||= Nokogiri::XML(@xml)
end

#xml_metadata ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 37

def xml_metadata
  @xml_metadata ||= xml_doc.xpath('/rss/channel/*[not(self::item)]')
end

#xml_node_at(string) ⇒ Object 



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# File 'lib/podrick/podcast.rb', line 75

def xml_node_at string
  if node = xml_metadata.at_xpath(string)
    node
  end
end