Class: MTP::Podcast

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

Defined Under Namespace

Classes: Feed

Constant Summary collapse

@@logger = 
Logger.new(STDERR)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(device, options = {}) ⇒ Podcast

Returns a new instance of Podcast.



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# File 'lib/mtp/podcast.rb', line 43

def initialize(device, options = {})
  @device = device
  @playlist_name = options[:playlist] || "podcasts"
  @configuration_dir = File.join(ENV['HOME'], '.mtp-podcast')
  @configuration_file = options[:configuration] || File.join(@configuration_dir, 'config.yml')
end

Class Method Details

.logger ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 18

def self.logger
  @@logger
end

Instance Method Details

#configuration ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 68

def configuration
  return @configuration unless @configuration.nil?

  Dir.mkdir(@configuration_dir) unless File.exists?(@configuration_dir)
  if File.exists?(@configuration_file)
    File.open(@configuration_file, 'r') do |f|
      @configuration = YAML.load(f)
    end
  else
    @configuration = default_configuration
  end
  @configuration
end

#default_configuration ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 64

def default_configuration
  [ "feeds" => [] ]
end

#feeds ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 82

def feeds
  @feeds ||= configuration["feeds"].keys.map do |k| 
    options = configuration["feeds"][k]
    options["directory"] = File.join(@configuration_dir, 'feeds', k) if options["directory"].nil?
    Feed.new(k, options)
  end
end

#logger ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 22

def logger
  @@logger
end

#playlist ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 50

def playlist
  return @playlist unless @playlist.nil?
  
  @playlist = @device.playlists.detect { |p| p.name == @playlist_name }
  
  if @playlist.nil?
    @playlist = Playlist.new
    @device.send(@playlist)
    @playlist.name = @playlist_name
  end
    
  @playlist
end

#update ⇒ Object 



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# File 'lib/mtp/podcast.rb', line 90

def update
  items = feeds.inject([]) { |ary, feed| ary + feed.items }
  items.sort! { |a, b| a.pubdate <=> b.pubdate }

  
  playlist.each do |track|
    in_rss_list = nil
    items.each do |item|
      if File.basename(item.enclosure.url) == track.filename
        in_rss_list = item
        break
      end
    end

    # remove from device the tracks which aren't in rss or which are too old
    if in_rss_list.nil? or in_rss_list.pubdate.to_time < in_rss_list.keep.days.ago
      puts "removing #{track.filename}"
      playlist.delete(track)
      @device.delete(track)
    else
      puts "skipping #{track.filename}"
      items.delete(in_rss_list)
    end
  end
  
  # download missing items
  items.each do |item|
    puts "downloading #{File.basename(item.enclosure.url)}"
    uri = URI.parse(item.enclosure.url)
    
    # connect to server
    Net::HTTP.start(uri.host, uri.port) do |http|
      
      # big hack to access socket io
      netio = http.instance_variable_get(:@socket)
      if netio.respond_to?(:io)
        sock = netio.io # 1.9
      else
        sock = netio.instance_variable_get(:@socket) # 1.8
      end
      
      # execute request
      request = Net::HTTP::Get.new(uri.path)
      request["host"] = (uri.port ? "#{uri.host}:#{uri.port}" : uri.host)
      request.exec(sock, Net::HTTP::HTTPVersion, request.path)
      
      # fetch headers
      while (str = sock.readline) != "\r\n"
        if str.match(/^Content-Length:\s*(\d+)\s*$/)
          length = $1.to_i
        end
      end

      # store object
      object = MP3Track.new
      object.filename = File.basename(item.enclosure.url)
      object.compressed_size = length
      @device.send(object, sock) do |written, total|
        printf("%02u%% %u/%u\r", written * 100/total, written, total)
      end
      printf("\n")
      object.name = item.title
      object.artist = item.itunes_author
      object.duration = item.itunes_duration * 1000
      playlist << object
    end
  end
end